Effect of particle size on magnetic properties of zinc chromite synthesized by sol-gel method

被引：44

作者：

Chen, XH ^{[1
]}

Zhang, HT

Wang, CH

Luo, XG

Li, PH

机构：

[1] Univ Sci & Technol China, Struct Res Lab, Hefei 230026, Peoples R China

[2] Univ Sci & Technol China, Dept Phys, Hefei 230026, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2002年 / 81卷 / 23期

关键词：

D O I：

10.1063/1.1526921

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Spinel zinc chromite nanocrystals with various grain sizes ranging from 6.8 to 32 nm have been synthesized using a formalin sol-gel method. Samples were characterized by x-ray diffraction, transmission electron micrograph, and superconducting quantum interference device magnetometer. An effect of particle size on magnetic properties is observed. The decrease in particle size leads to a large enhancement of magnetization. Antiferromagnetic transition disappears when the particles reach a critical size, which can be explained by the deviation from the normal spinel structure in the cation distribution induced by particle size. (C) 2002 American Institute of Physics.

引用

页码：4419 / 4421

页数：3

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