Thermally stimulated depolarization current study on barium titanate single crystals
Wanghua Wu, Zhifu Liu, Yan Gu and 2 more
AIP Advances · 2018
doi:10.1063/1.5025501 (opens in a new tab)
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Abstract
Thermally stimulated depolarization current (TSDC) measurements were applied to investigate BaTiO3 single crystals with <100>, <110>, and <111> orientations, and annealed under different atmospheres, respectively. The TSDC peaks related to ferroelectric domain, ferroelectric–paraelectric phase transition, TiTi′−VÖ dipole relaxation and oxygen vacancy migration were observed from the TSDC spectra. The formation of oxygen vacancy clusters in BaTiO3 single crystals leads to a high dipole activation energy. The <111> crystalline face of BaTiO3 is more stable under external field than others.
Abstract licence: CC BY
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