Charge Transfer between Fe and Ti Induced by Ln Substitution and Temperature in the B-Site-Disordered Perovskites Ln2 (FeTi)O6 (Ln = La, Pr, and Nd)

被引：1
作者：
Goto, Masato [1 ]
Okazaki, Masato [1 ]
Shimakawa, Yuichi [1 ]
机构：
[1] Kyoto Univ, Inst Chem Res, Uji, Kyoto 6110011, Japan
来源：
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN | 2022年 / 95卷 / 07期
基金：
日本学术振兴会;
关键词：
Charge transfer; Perovskite oxides; High pressure synthesis; TRANSITION;
D O I：
10.1246/bcsj.20220100
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Newly synthesized B-site-disordered perovskites Ln(2)-(FeTi)O-6 (Ln = Pr and Nd) were found to show charge transfer between Fe and Ti ions, which was in contrast to the robust Fe3+/Ti3+ state in the isostructural Ln = La compound La-2-(Fe3+Ti3+)O-6. The charge distribution for Ln = Pr and Nd can be expressed as Ln(2)((Fe0.83+Ti0.83+Fe0.2+Ti0.24+)-Ti-2)O-6 at room temperature, and the amount of Fe2+/Ti4+ increases with decreasing temperature. In addition, the charge transfer resulting in Ln-dependent valence states at the B site strongly affects magnetic properties, including the magnetic transition temperatures and the ground states.
引用
收藏
页码：1011 / 1015
页数：5
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