Reactivity of FeVO4 towards selected molybdates(VI) of divalent transition metals

被引：3

作者：

Bosacka, M.

Worstynowicz, A.

Kaczmarek, S. M.

Jakubus, P.

机构：

[1] Tech Univ Szczecin, Dept Inorgan & Analyt Chem, PL-71065 Szczecin, Poland

[2] Tech Univ Szczecin, Inst Phys, PL-71065 Szczecin, Poland

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2007年 / 68卷 / 5-6期

关键词：

inorganic compounds; infrared spectroscopy; electron paramagnetic resonance (EPR); magnetic properties;

D O I：

10.1016/j.jpcs.2007.01.030

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Compounds of the general formulae Fe3M2 (II)mo 2V3O20, where M = Ni, Co, Mn crystallizing in the monoclinic system have been obtained as a result of a solid-state reaction occurring between FeVO4 and M(II)oO(4) mixed at a molar ratio of 3:2. Temperatures of their incongruent melting amount to: Fe(3)A(2)Mo(2)V(3)O(20) -900 degrees C, Fe3CO2MO2V3O20-860 degrees C and Fe(3)Mn(2)NlO(2V3)O(20)-770 degrees C. In all of the nvestigated compounds, a wide EPR signal observed at g = 2 has been attributed to a spin-spin interaction of iron oxide or Fe3+ -Fe (3+) pairs. The analysis of the temperature dependence of the integral EPR intensity allows a determination of the values of exchange interaction constants. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：1184 / 1192

页数：9