High temperature investigation of the magnetization behavior in cobalt substituted ZnO

被引：19

作者：

Bhatti, Kanwal Preet ^{[1
]}

Chaudhary, Sujeet ^{[1
]}

Pandya, Dinesh K. ^{[1
]}

Kashyap, Subhash C. ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Phys, Thin Film Lab, New Delhi 110016, India

来源：

JOURNAL OF APPLIED PHYSICS | 2007年 / 101卷 / 03期

关键词：

D O I：

10.1063/1.2432378

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

High temperature magnetization studies (up to 650 degrees C) of the chemically synthesized nanocrystalline Zn0.9Co0.1O samples are reported in this paper. A systematic study of sequentially sintered sample has been carried out to correlate the observed changes in magnetic behavior vis a vis very small changes in the unit-cell dimensions, evolution of cobalt oxide phases, and absence of Co clusters. The Curie temperature of cobalt substituted ZnO is determined to be similar to 495 degrees C. A plausible explanation of the observed room temperature ferromagnetism is presented in terms of bound magnetic polarons model. (c) 2007 American Institute of Physics.

引用

页数：5

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