arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1806.02640cond-mat.mtrl-sciphysics.chem-ph
收藏

铁电BaTiO3(001)畴的极化相关化学

Polarization dependent chemistry of ferroelectric BaTiO3 (001) domains

Yanyu Mi, Gregory Geneste, Julien Rault, Claire Mathieu, Alexandre Pancotti, Nicholas Barrett

摘要:

最近的工作表明,表面化学,特别是氧空位的存在可以影响铁电材料中的极化。这反过来又会影响由屏蔽去极化场的需要驱动的畴序。在这里,我们表明,使用密度泛函理论,在钛酸钡(001)表面的氧空位的存在下,优先稳定向内指向,P-,极化。畴序的镜电子显微镜测量证实了理论结果。

英文摘要:

Recent works suggest that the surface chemistry, in particular, the presence of oxygen vacancies can affect the polarization in a ferroelectric material. This should, in turn, influence the domain ordering driven by the need to screen the depolarizing field. Here we show using density functional theory that the presence of oxygen vacancies at the surface of BaTiO3 (001) preferentially stabilizes an inward pointing, P-, polarization. Mirror electron microscopy measurements of the domain ordering confirm the theoretical results.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑