多铁性六方正铁氧体 RFeO3 (R=Ho, Er, Lu) 的光学性质与电子结构
材料科学
2012-07-18 v3 其他凝聚态物理
摘要
我们报道了对多铁性六方（P.G. 6mm）稀土正铁氧体 RFeO3 (R=Ho, Er, Lu) 外延生长于 ZrO2(Y2O3) 衬底 (111) 面上的薄膜的光学研究。在 0.6-5.6 eV 范围内的光吸收研究表明，薄膜在 1.9 eV 以下透明；在此能量以上可区分出四个宽而强的吸收带。在分析吸收光谱时考虑了 Fe(3+) 离子异常的五配位。4.9 eV 处光吸收的温度依赖性在 124 K 表现出反常，我们将其归因于铁亚晶格的磁有序。
引用
@article{arxiv.1112.5102,
title = {Optical properties and electronic structure of multiferroic hexagonal orthoferrites RFeO3 (R=Ho, Er, Lu)},
author = {V. V. Pavlov and A. R. Akbashev and A. M. Kalashnikova and V. A. Rusakov and A. R. Kaul and M. Bayer and R. V. Pisarev},
journal= {arXiv preprint arXiv:1112.5102},
year = {2012}
}
备注
8 pages, 3 figures, 22 references. Copyright (2012) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Journal of Applied Physics and may be found at http://link.aip.org/link/?jap/111/056105