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

页码：39 / 42

页数：4

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