Vanadium Octacyanoniobate-Based Magnet with a Curie Temperature of 138 K

被引：51

作者：

Kosaka, Wataru ^{[1
]}

Imoto, Kenta ^{[1
]}

Tsunobuchi, Yoshihide ^{[1
]}

Ohkoshi, Shin-ichi ^{[1
]}

机构：

[1] Univ Tokyo, Dept Chem, Sch Sci, Bunkyo Ku, Tokyo 1130033, Japan

来源：

INORGANIC CHEMISTRY | 2009年 / 48卷 / 11期

关键词：

CRYSTAL-STRUCTURE; ORDERING TEMPERATURE; DEGREES-C; T-C; MOLECULE; TRANSITION; MN; MO; OCTACYANOTUNGSTATE; MAGNETIZATION;

D O I：

10.1021/ic9001576

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

In this work, we prepared a three-dimensional vanadium octacyanoniobate-based magnet, (K0.10V0.54V1.24III)-V-II[Nb-IV(CN)(8)]center dot(SO4)(0.45)center dot 6.8H(2)O. This compound exhibits ferrimagnetism with a Curie temperature of 138 K, in which the sublattice magnetizations of V-II (S = 3/2) and V-III (S = 1) are antiparallelly ordered to that of Nb-IV (S = 1/2). The estimated superexchange interaction constants of V-II-Nb-IV and V-III-Nb-IV are -51 and -25 cm(-1), respectively.

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页码：4604 / 4606

页数：3

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