Cu掺杂ZnO纳米薄膜的制备与磁性  

Preparation and Magnetic Properties of Cu-doped ZnO Nanofilms

作　　者：杨淑敏[1] 许少文 岂云开[1] 顾建军[1] YANG Shumin;XU Shaowen;QI Yunkai;GU Jianjun(College of Physics and Electronic Engineering,Hebei Normal University for Nationalities,Chengde 067000,Hebei)

机构地区：[1]河北民族师范学院物理与电子工程学院,河北承德067000

出　　处：《四川师范大学学报（自然科学版）》2021年第4期515-520,共6页Journal of Sichuan Normal University（Natural Science）

基　　金：河北省自然科学基金(A2012101001);河北省高层次人才工程培养基金(A2016002040);河北省教育厅重点项目(ZD2019314);承德市科技创新项目(HZLC2018011)。

摘　　要：通过溶胶-凝胶旋涂法,在Si基底上制备Cu-ZnO薄膜,并对其微观结构、表面形貌和磁性进行研究.XRD和SEM结果显示,Cu的掺杂并没有改变ZnO薄膜的六角纤锌矿结构,并且适度的掺杂提高了ZnO纳米薄膜的结晶质量.磁性分析结果显示,掺Cu后的样品均显示出室温铁磁性,在一定掺杂范围内,样品的磁性逐渐增强,当Cu的掺杂量达到质量分数9%时,由于出现了反铁磁性的CuO,导致磁性减弱.综合分析表明,样品室温铁磁性来源于Cu^(2+)-O^(2+)-Cu^(2+)磁交换耦合作用.Cu-ZnO thin films were prepared on Si substrate by sol-gel spin coating and their microstructure,surface morphology and magnetic properties were studied.The XRD and SEM results show that the doping of Cu does not change the hexagonal wurtzite structure of the ZnO thin film,and moderate doping increases the crystal quality of the ZnO thin film.The magnetic analysis results show that the samples doped with Cu show room temperature ferromagnetism,and within a certain doping range,the magnetism of the samples are gradually enhanced with increasing Cu.When the doping amount of Cu reaches 9%,the magnetism of the sample is weakened due to the occurrence of antiferromagnetic CuO.The comprehensive analysis shows that the room temperature ferromagnetism of the samples is derived from Cu^(2+)-O^(2+)-Cu^(2+)magnetic exchange coupling.

关 键 词：ZNO 溶胶-凝胶 稀磁半导体 束缚磁极化子 

分 类 号：O884[理学]