Electron paramagnetic resonance in Zn1-xCoxO

被引：15
|
作者：
Acosta-Humanez, F. [1 ]
Cogollo Pitalua, R. [2 ]
Almanza, O. [1 ]
机构：
[1] Univ Nacl Colombia, Dept Fis, Grp Fis Aplicada, Bogota, Colombia
[2] Univ Cordoba, Dept Fis, Grp Mat & Fis Aplicada, Monteria, Colombia
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2013年 / 329卷
关键词：
EPR; ZnO; Curie-Weiss temperature; Sol-gel method; METAL-DOPED ZNO; PHOTOCATALYTIC ACTIVITY; MAGNETIC-RESONANCE; INTRINSIC DEFECTS; FERROMAGNETISM; SPINTRONICS;
D O I：
10.1016/j.jmmm.2012.10.026
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this paper is reported the Electron Paramagnetic Resonance (EPR) studies in Zn1-xCoxO powder, with 0.01 <= x <= 0.05, at many temperatures (105-250 K). These samples were synthesized by the sol-gel method (citrate route). Results suggest that the ferromagnetism behavior of the materials is governed by ferromagnetic coupling among cobalt ions. For cobalt concentration higher than 3% were obtained mean size particle higher than 25 nm, measured by X-ray diffraction, and for this were also observed shallow free radical. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：39 / 42
页数：4
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