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

页码：1011 / 1015

页数：5

共 15 条

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[6] Relationship between A-site cation and magnetic structure in 3d-5d-4f double perovskite iridates Ln2NiIrO6 (Ln = La, Pr, Nd)
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[8] Geometrical Spin Frustration and Monoclinic-Distortion-Induced Spin Canting in the Double Perovskites Ln2LiFeO6 (Ln = La, Nd, Sm, and Eu) with Unusually High Valence Fe5+
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[10] High-pressure synthesis and relationship between A-site ordering and local structure of multicomponent perovskites (Ln0.25Mn0.75)(Al0.25Ti0.75)O3, Ln = La, Pr, Nd, Sm, Gd, Tb, Dy, Y
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