MAGNETIC-PROPERTIES OF FRESNOITE-TYPE VANADIUM-OXIDES - A(2)V(3)O(8) (A=K, RB, NH4)

被引：68

作者：

LIU, G ^{[1
]}

GREEDAN, JE ^{[1
]}

机构：

[1] MCMASTER UNIV,INST MAT RES,HAMILTON,ON L8S 4M1,CANADA

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 1995年 / 114卷 / 02期

关键词：

D O I：

10.1006/jssc.1995.1075

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Methods for synthesizing large amounts of polycrystalline A(2)V(3)O(8)(A = K, Rb, and NH4) are introduced. Crystals of Rb2V3O8 have been grown in a RbBr flux and the crystal structure has been confirmed by single crystal X-ray diffraction. Magnetic susceptibility data of these fresnoite-type vanadium oxides are presented. All three compounds exhibit short-range magnetic correlations below 10 K. The susceptibility data are analyzed based on a two-dimensional square-planar model. The interactions are antiferromagnetic and the magnitude of the exchange (-J/k) decreases in the order K2V3O8, Rb2V3O8, and (NH4)(2)V3O8. (C) 1995 Academic Press, Inc.

引用

页码：499 / 505

页数：7

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