Synthesis and magnetic properties of ZnFe2O4 obtained by mechanochemically assisted low-temperature annealing of mixtures of Zn and Fe oxalates

被引：19
作者：
Berbenni, V.
Milanese, C.
Bruni, G.
Marini, A.
Pallecchi, I.
机构：
[1] CSGI, Dipartimento Chim Fis, I-27100 Pavia, Italy
[2] Dipartimento Fis, I-16146 Genoa, Italy
来源：
THERMOCHIMICA ACTA | 2006年 / 447卷 / 02期
关键词：
zinc ferrite; mechanical activation; magnetic properties;
D O I：
10.1016/j.tca.2006.06.006
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The mechanism of formation of zinc ferrite (ZnFe2O4) from ZnC2O4 center dot 1.8H(2)O-2Fe(II)C(2)O(4)center dot 2H(2)O and ZnC2O4 center dot 1.8H(2)O-Fe-2(III) (C2O4)(3)center dot 6H(2)O mixtures is investigated. By combination of TG and XRPD measurements it has been shown that microcrystalline ZnFe2O4 forms from physical mixtures after prolonged annealing at 1000 degrees C while nanocrystalline ZnFe2O4 powders are produced by mild annealing (1 h at 500 degrees C in air) of mechanically activated mixtures. The magnetic properties of ZnFe2O4 powders obtained from physical and from milled mixtures are compared. (C) 2006 Elsevier B.V. All rights reserved.
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页码：184 / 189
页数：6
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