Evidence of room temperature ferromagnetism in Co-doped transparent CuAlO2 semiconductor

被引：24

作者：

Dong, C. J. ^{[1
,2
,4
]}

Yu, W. X. ^{[2
]}

Xu, M. ^{[4
]}

Cao, J. J. ^{[1
,3
]}

Zhang, Y. ^{[1
]}

Chuai, Y. H. ^{[1
]}

Wang, Y. D. ^{[1
]}

机构：

[1] Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, Changchun 130012, Peoples R China

[2] Jilin Univ, Dept Mat Sci, Changchun 130012, Peoples R China

[3] Jilin Univ, Coll Phys, Changchun 130012, Peoples R China

[4] SW Univ Nationalities, Coll Elect & Informat Engn, Lab Informat Mat, Chengdu 610041, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2012年 / 512卷 / 01期

关键词：

CuAlO2; Co-doped; Delafossite structure; Ferromagnetism; NANOCRYSTALS; OXIDES; ZNO;

D O I：

10.1016/j.jallcom.2011.09.062

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We synthesized CuAl1-xCoxO2 (x = 0.00-0.07) thin films by solid-state reaction from Cu2O and Al2O3 on a sapphire (0 0 1) substrate by a simple and cost-effective spin-on technique. X-ray diffraction and Raman spectroscopy confirm the formation of single impurity-free delafossite CuAlO2 structure for all the compositions. We observed diamagnetism for pristine CuAlO2 and ferromagnetism for Co-doped CuAlO2 at room temperature. Specially, the coercivity (H-c) and saturation magnetization (M-s) are significantly enhanced with Co composition from 1 at.% to 5 at.% but show the reverse tendency with higher Co content. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：195 / 198

页数：4

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