Cu掺杂ZnO纳米结构的室温铁磁性研究  

Room Temperature Ferromagnetism in Nanostructure Cu-Doped ZnO

作　　者：刘惠莲[1,2,3] 杨景海[1,3] 张永军[3] 王雅新[3] 魏茂斌[3] 赵立有[3] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所激发态重点实验室,长春130033 [2]中国科学院研究生院,北京100049 [3]吉林师范大学物理学院,四平136000

出　　处：《Journal of Semiconductors》2008年第11期2256-2259,共4页半导体学报（英文版）

基　　金：国家自然科学基金资助项目(批准号:60778040)~~

摘　　要：采用柠檬酸盐法合成了一系列Zn1-xCuxO(x=0.01,0.02,0.03,0.04)纳米粒子,XRD结果表明Zn1-xCuxO样品为单一的ZnO纤锌矿结构.磁性测试结果表明Zn1-xCuxO(x=0.01,0.02,0.03,0.04)在室温下表现为铁磁性.XRD,TEM与XPS的测试结果表明,样品中没有具有铁磁性的第二相出现.经分析Zn1-xCuxO(x=0.01,0.02,0.03,0.04)的铁磁性是Cu掺杂ZnO纳米结构的本质特征.A series of Zn1-x Cux O （x = 0. 01,0. 02,0. 03,0. 04） nanoparticles were synthesized from Zn nitrate and Cu nitrate reduced by citrate. X-ray diffraction （XRD） shows that Zn1-x Cu/O samples are single phase with ZnO-like wurtzite structure. Magnetic measurements indicate that Zn1-xCuxO （x = 0. 01,0. 02,0. 03,0. 04） are ferromagnetic at room temperature. XRD, transmission electron microscope （TEM） analysis,and X-ray photoelectron spectroscopy （XPS） reveal that no ferromagnetic-related secondary phase was detected. The ferromagnetism in Zn1-x CuxO（x≤0.04） is intrinsic.

关 键 词：稀磁半导体 Cu掺杂ZnO 铁磁性 

分 类 号：O482.5[理学—固体物理]