Volume 72, Number 1, October 2005
|Page(s)||131 - 136|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||31 August 2005|
Absorption of domain walls to oxygen vacancies investigated through internal friction technique
National Laboratory of Solid State Microstructures, Department of Physics Nanjing University - Nanjing 210093, PRC
Corresponding author: firstname.lastname@example.org
Accepted: 27 July 2005
We found that 90° domain walls are absorptive to oxygen vacancies and the absorbing degree was related with the morphology of 90° domain walls: curved 90° domain walls are more absorptive to oxygen vacancies compared with straight 90° domain walls. Therefore, in ferroelectric materials with curved 90° domain walls, the density of oxygen vacancies diffusing to and subsequently pinning the 180° domain walls is greatly suppressed, resulting in their excellent fatigue resistance.
PACS: 77.84.-s – Dielectric, piezoelectric, ferroelectric, and antiferroelectric materials / 77.80.Dj – Domain structure; hysteresis / 62.40.+i – Anelasticity, internal friction, stress relaxation, and mechanical resonances
© EDP Sciences, 2005
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