@article{patten_fesperman_kumar_mcspadden_qu_lance_nemanich_huening_2003, title={High-pressure phase transformation of silicon nitride}, volume={83}, ISSN={["0003-6951"]}, DOI={10.1063/1.1632031}, abstractNote={We provide evidence for a high-pressure phase transformation (HPPT) in the ceramic material silicon nitride. This HPPT is inferred by a high-pressure diamond anvil cell, Raman spectroscopy, scanning/transmission electron microscopy, and optical and acoustic microscope inspection. In the case of silicon nitride, the HPPT involves a ductile or metallike behavior that is observed in severe deformation processes, such as nanoindentation and micromachining. This pressure-induced plasticity is believed to be similar to that found in silicon and germanium with its origin in the high-pressure metallic β-Sn phase formation.}, number={23}, journal={APPLIED PHYSICS LETTERS}, author={Patten, J and Fesperman, R and Kumar, S and McSpadden, S and Qu, J and Lance, M and Nemanich, R and Huening, J}, year={2003}, month={Dec}, pages={4740–4742} }