@article{haque_liu_taqy_narayan_2023, title={Cost-Effective Synthesis of Diamond Nano-/Microstructures from Amorphous and Graphitic Carbon Materials: Implications for Nanoelectronics}, volume={6}, ISSN={["2574-0970"]}, DOI={10.1021/acsanm.2c05098}, abstractNote={The synthesis of diamonds with different microstructures is important for various applications including nanoelectronic devices where diamonds can be implemented as heat spreaders. Here we report the synthesis of functional diamond microstructures and coatings, including diamond microfibers, microspheres, tubes, and large-area thin film, using amorphous and graphitic carbon precursors by hot filament chemical vapor deposition. The characteristics of microstructures depend upon initial carbon precursors and their laser annealing pretreatments. Low-cost and abundant carbon precursors act as diamond nucleation sites and accelerate diamond growth, while laser annealing can further promote the nucleation and growth of diamond. As a result, carbon microfibers are converted to diamond microfibers, while large diamond microspheres are formed from multipulse laser-annealed carbon microfibers. Both of the diamond structures consist of 5-fold twinned microcrystallites. Highly dense and phase-pure diamond films are observed using porous carbon seed, and individual diamond tubes with porous walls are obtained by using carbon nanotube hollow fibers. The electron backscatter diffraction analysis confirms the diamond cubic lattice structure, while sharp diamond peaks (1331–1333 cm–1) in Raman spectra demonstrate the excellent diamond quality of prepared diamond microstructures.}, number={8}, journal={ACS APPLIED NANO MATERIALS}, author={Haque, Ariful and Liu, Yanming and Taqy, Saif and Narayan, Jay}, year={2023}, month={Apr}, pages={6488–6495} }
 @article{joshi_haque_gupta_narayan_narayan_2021, title={Synthesis of multifunctional microdiamonds on stainless steel substrates by chemical vapor deposition}, volume={171}, ISSN={["1873-3891"]}, DOI={10.1016/j.carbon.2020.09.064}, abstractNote={We report on the synthesis of multifunctional microdiamonds by chemical vapor deposition (CVD) on 304 and 316 austenitic stainless steel (SS) substrates. The increase in wettability achieved by surface scratching and the structure of ultra-dense Q-carbon achieved high nucleation density and minimized strains in diamond films. Notably, these diamond films exhibit a high amount of twinning, leading to the formation of five-fold microdiamonds. The diamonds on scratched SS substrate and Q-carbon interlayer exhibit a full width at half maximum of 8.25 cm−1 and 11.5 cm−1, compared to 26 cm−1 on bare SS substrate. The diamond films grown on bare SS substrate exhibited cracking due to high tensile stress of 2.3 GPa, ascribed to thermal mismatch between SS and diamond. The electron backscattered diffraction investigations reveal iron inclusions in diamonds synthesized on bare SS substrates, which may create ferromagnetism in these diamonds. This route, compared to the ion beam implantation method using ferromagnetic ions, yields better samples. At 800 °C, 1012 Fe atoms/cm2s are transferred from the SS substrate into the diamonds. The dominant growth orientation for these CVD diamonds was determined to be <110> out of plane. These multifunctional microdiamonds are useful for biomedical, electronic, and tribological applications.}, journal={CARBON}, author={Joshi, Pratik and Haque, Ariful and Gupta, Siddharth and Narayan, Roger J. and Narayan, Jagdish}, year={2021}, month={Jan}, pages={739–749} }
 @article{haque_narayan_2021, title={Tunable n-Type Conductivity and Transport Properties of Cubic Boron Nitride via Carbon Doping}, volume={3}, ISSN={["2637-6113"]}, DOI={10.1021/acsaelm.0c01130}, abstractNote={The recent discovery of direct conversion of hexagonal boron nitride (h-BN) into quenched BN (Q-BN) and single-crystal cubic BN (c-BN) by pulsed laser annealing (PLA) have been implemented to fabri...}, number={3}, journal={ACS APPLIED ELECTRONIC MATERIALS}, author={Haque, Ariful and Narayan, Jagdish}, year={2021}, month={Mar}, pages={1359–1367} }
 @article{haque_narayan_2020, title={Conversion of h-BN into c-BN for tuning optoelectronic properties}, volume={1}, ISSN={["2633-5409"]}, DOI={10.1039/d0ma00008f}, abstractNote={Phase pure c-BN and mixed phased h-BN and c-BN films on c-sapphire were fabricated by pulsed laser annealing for tuning optical properties.}, number={4}, journal={MATERIALS ADVANCES}, author={Haque, Ariful and Narayan, Jagdish}, year={2020}, month={Jul}, pages={830–836} }
 @article{reaz_haque_cornelison_wanekaya_delong_ghosh_2020, title={Magneto-luminescent zinc/iron oxide core-shell nanoparticles with tunable magnetic properties}, volume={123}, ISSN={["1873-1759"]}, DOI={10.1016/j.physe.2020.114090}, abstractNote={Core-shell nanospheres with tailorable magnetic properties and strong luminescence promise versatile and efficient biomedical and electronic applications. We report a low-cost sonochemical synthesis of ZnO/iron oxide core-shell nanostructures with tunable magnetic properties. The high-resolution transmission electron microscopy (HRTEM) illustrates the distinguished dispersity of the oxide nanoparticles, whereas elemental profiling using line scan data confirm the formation of the distinguished core and shell phases. Annealing in N2–H2 and Ar–H2 ambient alters the magnetic properties such as coercive field, saturation magnetization, and remnant magnetization within the inverse spinel iron oxide with space group Fd3m. Subtle structural changes between maghemite (γ-Fe2O3) and its reduced form, magnetite (Fe3O4), have been identified in the thin (0.5–3 nm) shell region of atomic dimensions. Structural composition including phase transitions and defect states are investigated using XRD, XPS, and Raman measurements. Coexistence of ferromagnetism (from the shell and characterized by magnetic measurements) and strong luminescence (from ZnO core and obtained from photoluminescence spectroscopy) at room temperature indicates exotic magneto-optical coupling, which is supported by the blue-shifted luminescence spectra. Our approach combining nanotechnology and solid-state chemistry opens a new frontier to the building of innovative nanomaterials for integration, especially multifunctional core-shell oxide nanomaterials.}, journal={PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES}, author={Reaz, M. and Haque, A. and Cornelison, D. M. and Wanekaya, A. and Delong, R. and Ghosh, K.}, year={2020}, month={Sep} }
 @article{mahbub_haque_ghosh_2019, title={Fabrication and Magnetic Characterization of CFO/NiO and CFO/NiS Heterostructures}, volume={32}, ISSN={["1557-1947"]}, DOI={10.1007/s10948-019-5032-5}, number={9}, journal={JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM}, author={Mahbub, Ahmed R. and Haque, Ariful and Ghosh, Kartik}, year={2019}, month={Sep}, pages={2857–2864} }
 @article{abdullah-al mamun_haque_paton_paul_ghosh_2019, title={Fabrication and ferromagnetic resonance study of BZT-BCT/LSMO heterostructure films on LAO and Pt}, volume={478}, ISSN={["1873-4766"]}, DOI={10.1016/j.jmmm.2019.01.098}, abstractNote={In this article, dynamic magnetic properties of La0.7Sr0.3MnO3 (LSMO) thin film capped with a Pb-free ferroelectric BZT-BCT layer deposited on two different substrates, i.e. lanthanum aluminate (LAO) and Platinum (Pt), by pulsed laser deposition (PLD) have been investigated using ferromagnetic resonance (FMR) spectroscopy. The heterostructures of BZT-BCT/LSMO on LAO substrate were highly (0 0 l)-oriented whereas these were randomly oriented on Pt substrate. The well-behaved M-H hysteresis loops were observed at room temperature for both heterostructures indicating the ferromagnetic behavior of LSMO. The right shift of the hysteresis loop of the heterostructure was observed due to the magnetoelectric coupling between ferroelectric and ferromagnetic layers. The FMR measurements yield optimum values of different important parameters such as the linewidth offset, Gilbert damping, gyromagnetic ratio, and in-plane uniaxial anisotropy field of the thin films, which are essential to design spin valve and magnetic tunneling based devices. We found the lowest Gilbert damping parameter of ∼0.03 for the BZT-BCT/LSMO/LAO heterostructure due to spin orbit coupling. In addition, the gyromagnetic ratio was also obtained to be small (0.002 GHz/Oe) in the same film. These results open new possibilities to use BZT-BCT/LSMO heterostructure for future spintronic device applications.}, journal={JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS}, author={Abdullah-Al Mamun, Md and Haque, Ariful and Paton, Anthony and Paul, Bithi and Ghosh, Kartik}, year={2019}, month={May}, pages={132–139} }
 @article{haque_mahbub_abdullah-al mamun_reaz_ghosh_2019, title={Fabrication and thickness-dependent magnetic studies of tunable multiferroic heterostructures (CFO/LSMO/LAO)}, volume={125}, ISSN={["1432-0630"]}, DOI={10.1007/s00339-019-2620-y}, number={5}, journal={APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING}, author={Haque, Ariful and Mahbub, Ahmed R. and Abdullah-Al Mamun, Md and Reaz, Mahmud and Ghosh, K.}, year={2019}, month={May} }
 @article{zkria_haque_egiza_abubakr_murasawa_yoshitake_narayan_2019, title={Laser-induced structure transition of diamond-like carbon coated on cemented carbide and formation of reduced graphene oxide}, volume={9}, ISSN={["2159-6867"]}, DOI={10.1557/mrc.2019.88}, abstractNote={We report on the structural evolution of diamond-like carbon (DLC) films by the nanosecond pulsed laser annealing process. DLC film is coated on cemented carbide (WC-Co) by cathodic arc ion plating, which is then annealed by ArF laser (193 nm, 20 ns) at different laser fluences (0.9–1.7 J/cm^2). Upon laser annealing, Raman spectra divulge higher sp ^3 fractions accompanied by a blue shift in the G -peak position, which indicates the changes of sp ^2 sites from rings to chains. At higher fluence (>1.2 J/cm^2), the film converts into reduced graphene oxide confirmed by its Raman-active vibrational modes: D, G , and 2 D .}, number={3}, journal={MRS COMMUNICATIONS}, author={Zkria, Abdelrahman and Haque, Ariful and Egiza, Mohamed and Abubakr, Eslam and Murasawa, Koki and Yoshitake, Tsuyoshi and Narayan, Jagdish}, year={2019}, month={Sep}, pages={910–915} }
 @article{paul_abdullah-al mamun_haque_paul_ghosh_2019, title={Significant Reduction of Defect States and Surface Tailoring in ZnO Nanoparticles via Nano-Bio Interaction With Glucose for Bio-Applications}, volume={18}, ISSN={["1558-2639"]}, DOI={10.1109/TNB.2019.2919231}, abstractNote={In this study, we have investigated the structural and optical properties of nanoconjugates (NJs) consisting of phase pure zinc oxide (ZnO) nanoparticles (NPs) with glucose biomolecules. All NJs were fabricated using a standard biochemical synthesis process. Structural, optical, vibrational, and biochemical interface properties of nano-bio composites are probed by different complementary characterization techniques. The XRD patterns of the NPs and NJs illustrate a highly phase pure ZnO structure. A visible green emission in the photoluminescence spectrum, mainly associated with the oxygen vacancies on the surface of ZnO nanostructure, is significantly reduced by the incorporation of glucose biomolecules. The strong binding interaction of glucose biomolecule on the surface of ZnO NPs results in the reduction in green-yellow-orange emission intensities. The interaction of glucose molecules modifies oxygen vacancies by capturing free electrons from the ZnO surface region. Significant changes in the peak intensity and relative peak position of some of the glucose and ZnO NPs in Raman spectra refer to the direct binding between these two nano- and bio-components. In the X-ray photoelectron spectroscopy, the binding energy of O 1s core level in NJs increases from 531 eV (O 1s core level position for ZnO) and the increment is more with higher initial glucose concentration in the solution during synthesis. This study serves as a promising platform for the development of new kinds of NJs and investigation of their interfacial properties which can take the frontier forward for integration and multifunctionality.}, number={3}, journal={IEEE TRANSACTIONS ON NANOBIOSCIENCE}, author={Paul, Bithi and Abdullah-Al Mamun, Md and Haque, Ariful and Paul, Monika and Ghosh, Kartik}, year={2019}, month={Jul}, pages={490–497} }
 @article{haque_sachan_narayan_2019, title={Synthesis of diamond nanostructures from carbon nanotube and formation of diamond-CNT hybrid structures}, volume={150}, ISSN={["1873-3891"]}, DOI={10.1016/j.carbon.2019.05.027}, abstractNote={We report direct conversion of multiwall carbon nanotubes (CNTs), synthesized by chemical vapor deposition, into diamond by nanosecond pulsed laser melting process at ambient temperature and pressure in air without any catalysts. The Raman spectroscopy of the CNTs after the laser irradiation showed the characteristic diamond peak at around 1324-1325 cm−1. The downshift of this peak from its theoretical position (at 1332 cm−1) is explained by phonon confinement in nanostructured diamond. The SEM and TEM images show the formation of diamond mostly at the tip and bends of the CNTs. The grain size distribution and the shape of the converted nanodiamonds suggest that the transformation takes place by melting of the CNTs in a super undercooled state by nanosecond laser pulses, and subsequent rapid quenching to convert it into phase-pure diamond. The EBSD analysis illustrates the phase-pure single crystal diamond formation at the tips and bends of the CNTs. The high-resolution electron energy-loss spectrum in the STEM contains characteristic σ* peak at 292 eV for sp3 bonding of diamond. This study on the laser-induced direct conversion of CNTs to diamond marks a major breakthrough in the formation of diamond nanostructures and diamond-CNT hybrid for a variety of potential applications.}, journal={CARBON}, author={Haque, Ariful and Sachan, Ritesh and Narayan, Jagdish}, year={2019}, month={Sep}, pages={388–395} }
 @article{karnati_haque_taufique_ghosh_2018, title={A Systematic Study on the Structural and Optical Properties of Vertically Aligned Zinc Oxide Nanorods Grown by High Pressure Assisted Pulsed Laser Deposition Technique}, volume={8}, ISSN={["2079-4991"]}, DOI={10.3390/nano8020062}, abstractNote={In this study, we synthesize high quality vertically aligned ZnO (VAZO) nanorods on silicon, sapphire, and indium tin oxide (ITO) substrates by using pulsed laser deposition (PLD) technique at high growth pressure (0.3 Torr). Systematic changes in structural and optical properties of VAZO nanorods are studied by varying the substrate temperature (500–600 °C) and number of pulsed laser shots during the deposition. ZnO nanoparticles deposited at high pressure act as nucleation sites, eliminating requirement of catalyst to fabricate VAZO nanorods. Two sharp ZnO peaks with high intensity correspond to the (0002) and (0004) planes in X-ray diffraction pattern confirm the growth of ZnO nanorods, oriented along the c-axis. Scanning Electron Microscopy (SEM) images indicate a regular arrangement of vertically aligned hexagonal closed pack nano-structures of ZnO. The vertical alignment of ZnO nanorods is also supported by the presence of E2 (high) and A1 (LO) modes in Raman spectra. We can tune the diameter of VAZO nanorods by changing growth temperature and annealing environments. Photoluminescence spectroscopy illustrates reduction in defect level peak intensities with increase in diameter of VAZO nanorods. This study signifies that high pressure PLD technique can be used more efficiently for controlled and efficient growth of VAZO nanorods on different substrates.}, number={2}, journal={NANOMATERIALS}, author={Karnati, Priyanka and Haque, Ariful and Taufique, M. F. N. and Ghosh, Kartik}, year={2018}, month={Feb} }
 @article{haque_narayan_2018, title={Electron field emission from Q-carbon}, volume={86}, ISSN={["1879-0062"]}, DOI={10.1016/j.diamond.2018.04.008}, abstractNote={We report field electron emission investigations in Q-carbon composite structures formed by pulsed laser annealing of amorphous carbon layers. Under the optimum fabrication conditions, a dense microstructured morphology of Q-carbon was obtained, which is important for local electric field enhancement in field-emission device applications. The turn-on field required to draw an emission current density of 1 μA/cm2 is found to be 2.4 V/μm. The Q-carbon films show good electron emission stability as a function of time up to 4 h. The microstructure and morphology of the field emitting Q-carbon films was analyzed by a variety of techniques, including field emission scanning electron microscope, Raman spectroscopy, and atomic force microscopy. Our results show a very high emission current density value of ~30 μA/cm2 at an applied electric field of 2.65 V/μm, which is hysteresis-free and stable. The generated emission current has been found to have low fluctuations (<4%) and shows no generation of defects during repeated emission measurements on the sample. Our findings thus hold a great promise for the development of Q-carbon films in applications ranging from field emitters and frictionless motors to heterostructures for novel micro and nano-electronic devices.}, journal={DIAMOND AND RELATED MATERIALS}, author={Haque, Ariful and Narayan, Jagdish}, year={2018}, month={Jun}, pages={71–78} }
 @article{haque_abdullah-al mamun_taufique_karnati_ghosh_2018, title={Large Magnetoresistance and Electrical Transport Properties in Reduced Graphene Oxide Thin Film}, volume={54}, ISSN={["1941-0069"]}, DOI={10.1109/TMAG.2018.2873508}, abstractNote={We report a systematic study of room temperature large positive and negative magnetoresistance (MR) in the reduced graphene oxide (RGO) thin-film devices grown by pulsed-laser deposition (PLD) at high and low applied magnetic fields, respectively. Raman spectroscopy, X-ray photoelectron spectroscopy, and electrical measurements on the RGO films help to explain the observed MR properties in the device. The temperature-dependent (5–400 K) electrical characterization of the thin films shows two distinct transport regimes: at low temperature, it follows 2-D Efros-Shoklovoski variable range hopping (VRH) transport mechanism and above 200 K, the device shows Arrhenius-like transport behavior. The crossover from VRH transport to Arrhenius transport is due to shortening in the characteristic lengths in the disordered 2-D system. We interpret the source of negative MR by vacancy and disorder-induced magnetic moments and the diffuse scattering at crystallite boundaries. At the high applied magnetic field, the lifting in degeneracy due to the Lorentz force explains the large positive MR effect. The highest value of the measured MR (160%) is surprisingly high for a non-magnetic material at room temperature, which can be attributed to the greater inhomogeneity in the PLD grown wafer-scale RGO thin films.}, number={12}, journal={IEEE TRANSACTIONS ON MAGNETICS}, author={Haque, Ariful and Abdullah-Al Mamun, Md and Taufique, M. F. N. and Karnati, Priyanka and Ghosh, Kartik}, year={2018}, month={Dec} }
 @article{haque_pant_narayan_2018, title={Large-area diamond thin film on Q-carbon coated crystalline sapphire by HFCVD}, volume={504}, ISSN={["1873-5002"]}, DOI={10.1016/j.jcrysgro.2018.09.036}, abstractNote={The growth of diamond on transparent substrates like sapphire presents a great challenge because of the large thermal misfit between the film and the substrate, absence of any carbide layer during diamond growth, and low nucleation density during chemical vapor deposition (CVD) growth process. In this study, we report on the use and the role of Q-carbon as an intermediate layer to successfully deposit large-area diamond film on c-sapphire by hot filament chemical vapor deposition (HFCVD). The Q-carbon consists of very high-density diamond tetrahedra which act as the embryo for diamond nucleation. Different techniques such as X-ray diffraction, scanning electron microscopy, and Raman spectroscopy show that continuous diamond films with good crystallinity and without any impurity phase can be deposited on the Q-carbon coated single crystal sapphire substrate. The Q-carbon layer is very adherent and it negates the thermal mismatch between the diamond film and the sapphire substrate. A small blue shift in the Raman peak of the diamond from its equilibrium position suggests the deposition of the CVD diamond film with minimal stress (1.14 GPa). This technique of growing large-area continuous diamond thin film with excellent crystalline quality on a single crystal sapphire substrate can serve as a platform for the development of next-generation corrosion and erosion resistant infrared windows, state-of-the-art optoelectronic devices, and advanced scanning probe microscopy systems.}, journal={JOURNAL OF CRYSTAL GROWTH}, author={Haque, Ariful and Pant, Punam and Narayan, Jagdish}, year={2018}, month={Dec}, pages={17–25} }
 @article{narayan_bhaumik_gupta_haque_sachan_2018, title={Progress in Q-carbon and related materials with extraordinary properties}, volume={6}, ISSN={["2166-3831"]}, url={https://doi.org/10.1080/21663831.2018.1458753}, DOI={10.1080/21663831.2018.1458753}, abstractNote={ABSTRACT This paper summarizes our research related to Q-carbon and Q-BN and direct conversion of carbon into diamond and h-BN into c-BN. Synthesis and processing of these materials are accomplished by nanosecond laser melting and subsequent quenching of amorphous carbon and nanocrystalline h-BN. Depending upon the degree of undercooling, molten carbon (or h-BN) can be converted into Q-carbon (or Q-BN) or diamond (or c-BN). The primary focus here is on the outstanding properties of these materials, including hardness greater than diamond, ferromagnetism, p- and n-type doping, NV nanodiamonds, high-temperature superconductivity in B-doped Q-carbon, enhanced field emission, superhard composite coatings, and future applications. IMPACT STATEMENT This research represents a fundamental breakthrough in the direct conversion of carbon into diamond at ambient temperatures and pressures in the air and their extraordinary properties. GRAPHICAL ABSTRACT}, number={7}, journal={MATERIALS RESEARCH LETTERS}, publisher={Taylor & Francis}, author={Narayan, Jagdish and Bhaumik, Anagh and Gupta, Siddharth and Haque, Ariful and Sachan, Ritesh}, year={2018}, pages={353–364} }
 @article{haque_narayan_2018, title={Stability of electron field emission in Q-carbon}, volume={8}, ISSN={["2159-6867"]}, DOI={10.1557/mrc.2018.172}, abstractNote={In this study, we have investigated electron field emission (EFE) characteristics of Q-carbon at room temperature and above. At room temperature the Q-carbon requires only ~2.4 V/μm electric field to turn-on the EFE. The EFE properties of the Q-carbon composite structure improve with temperature by lowering the turn-on field and increasing the current density. At 500 K we observed a turn-on field of ~2.34 V/μm, and a maximum current density was found to be ~53 µA/cm^2 at 2.66 V/μm. The Q-carbon field emitters also show very stable EFE characteristics (within 7% fluctuations) overtime for current intensities between 7.5 and 47 µA/cm^2.}, number={3}, journal={MRS COMMUNICATIONS}, author={Haque, Ariful and Narayan, Jagdish}, year={2018}, month={Sep}, pages={1343–1351} }
 @article{abdullah-al mamun_haque_pelton_paul_ghosh_2018, title={Structural, Electronic, and Magnetic Analysis and Device Characterization of Ferroelectric-Ferromagnetic Heterostructure (BZT-BCT/LSMO/LAO) Devices for Multiferroic Applications}, volume={54}, ISSN={["1941-0069"]}, DOI={10.1109/TMAG.2018.2873513}, abstractNote={Ferroelectricity and ferromagnetism have been investigated in a lead-free 0.5Ba(Zr<sub>0.2</sub>Ti<sub>0.8</sub>)O<sub>3</sub>–0.5(Ba<sub>0.7</sub>Ca<sub>0.3</sub>)TiO<sub>3</sub> (BZT–BCT)/La<sub>0.7</sub>Sr<sub>0.3</sub>MnO<sub>3</sub> (LSMO) heterostructure for multiferroic (MF) applications. The BZT–BCT thin film has been grown on LSMO/lanthanum aluminate, LaAlO<sub>3</sub> (LAO) by pulsed laser deposition (PLD). Prior to that, the LSMO layer was deposited on a single-crystal LAO substrate by PLD. The epitaxial growth of the (001) oriented films was confirmed by X-ray diffraction analysis. The small value of the full-width at half-maximum of the rocking curve peak (0.1°) performed about (002) plane of the BZT–BCT film indicates an out-of-plane orientation of the film. The polarization switching behavior in the heterostructure device was observed with a remnant polarization of <inline-formula> <tex-math notation="LaTeX">$\sim 47~\boldsymbol {\mu \text {C}/}{{\text {cm}}}^{2}$ </tex-math></inline-formula> and a coercive field of ~180kV/cm at an applied voltage of 5 V. The frequency-dependent relative dielectric constant varies in-between 5100 and 4900 in the frequency range from 1 to 50 kHz during the dielectric measurements of the fabricated device. The observed low value of the dielectric loss (0.02) confirms the outstanding quality of the ferroelectric device. A well-saturated room temperature magnetization–applied field curve, with a coercive field of ~1200A/m and a remnant magnetization of ~110kA/m, was observed in the LSMO/LAO system indicating the ferromagnetic behavior of the film. The temperature-dependent magnetization of the LSMO film exhibits a ferromagnetic-to-paramagnetic transition at ~360K. These results on all solid-state ferroelectric–ferromagnetic heterostructure using BZT–BCT and LSMO open viable possibilities for MF applications.}, number={12}, journal={IEEE TRANSACTIONS ON MAGNETICS}, author={Abdullah-Al Mamun, Md and Haque, Ariful and Pelton, Anthony and Paul, Bithi and Ghosh, Kartik}, year={2018}, month={Dec} }
 @article{haque_abdullah-al mamun_taufique_karnati_ghosh_2018, title={Temperature Dependent Electrical Transport Properties of High Carrier Mobility Reduced Graphene Oxide Thin Film Devices}, volume={31}, ISSN={["1558-2345"]}, DOI={10.1109/TSM.2018.2873202}, abstractNote={We report temperature dependent electrical transport properties of high mobility reduced graphene oxide (RGO) thin films fabricated by pulse laser deposition. The temperature dependent (5K–350K) four terminal electrical transport property measurements confirm variable range hopping and thermally activated transport mechanism of the charge carriers at low (5K–210K) and high temperature (210K–350K) regions, respectively. The calculated localization length, the density of states near the Fermi level (<inline-formula> <tex-math notation="LaTeX">$E_{F}$ </tex-math></inline-formula>), hopping energy, and Arrhenius energy gap provide useful information to explain the excellent electrical properties of the RGO films. Hall mobility measurement confirms <inline-formula> <tex-math notation="LaTeX">${p}$ </tex-math></inline-formula>-type characteristics of the thin films. The charge carrier Hall mobility can be engineered by tuning the growth parameters, and the measured maximum mobility was 1596 cm<sup>2</sup>v<sup>−1</sup>s<sup>−1</sup>. The optimization of the improved electrical property is well supported by structural properties such as the defect density, average size of sp<sup>2</sup> clusters and degree of reduction, which were investigated by Raman spectroscopy and X-ray diffraction analysis.}, number={4}, journal={IEEE TRANSACTIONS ON SEMICONDUCTOR MANUFACTURING}, author={Haque, Ariful and Abdullah-Al Mamun, Md and Taufique, M. F. N. and Karnati, Priyanka and Ghosh, Kartik}, year={2018}, month={Nov}, pages={535–544} }
 @article{taufique_haque_karnati_ghosh_2018, title={ZnO-CuO Nanocomposites with Improved Photocatalytic Activity for Environmental and Energy Applications}, volume={47}, ISSN={["1543-186X"]}, DOI={10.1007/s11664-018-6582-1}, number={11}, journal={JOURNAL OF ELECTRONIC MATERIALS}, author={Taufique, M. F. N. and Haque, Ariful and Karnati, Priyanka and Ghosh, Kartik}, year={2018}, month={Nov}, pages={6731–6745} }