2008 journal article

Enhanced dielectric tunability in barium titanate thin films with boron additions

SCRIPTA MATERIALIA, 58(7), 549–552.

By: J. Ihlefeld n, W. Borland* & J. Maria n

co-author countries: United States of America πŸ‡ΊπŸ‡Έ
author keywords: dielectrics; thin films; ferroelectricity; grain growth; copper
Source: Web Of Science
Added: August 6, 2018

Boron incorporation in 650 nm thick polycrystalline BaTiO3 films results in grain growth and dramatic dielectric response improvements. For levels between 0% and 3%, average grain size is increased from 150 to 200 nm and the maximum permittivity values are nearly doubled, with tunabilities increased to greater than 90% while maintaining high field loss tangents below 0.03. These results demonstrate a pathway for microstructure engineering and property optimization in refractory electroceramic oxide thin films without increasing the thermal budget.