相分离体系Nd_(0.80)Sr_(0.20)CoO_3的磁性质研究  

Investigation of Magnetic Properties of Phase-Separated Nd_(0.80)Sr_(0.20)CoO_3

作　　者：杨亦云 YANG Yiyun(College of Electronics and Information Engineering,Ankang University,Ankang 725000,China)

机构地区：[1]安康学院电子与信息工程学院,陕西安康725000

出　　处：《重庆理工大学学报（自然科学）》2018年第9期91-94,共4页Journal of Chongqing University of Technology：Natural Science

基　　金：国家自然科学基金UQ资助项目(61152003);陕西省教育厅科学研究计划项目(16JK1015);安康学院资助项目(2015AYPYZR05)

摘　　要：系统地研究了钴氧化物Nd_(0.80)Sr_(0.20)CoO_3的磁性质。采用常规的固态反应方法制备了Nd_(0.80)Sr_(0.20)CoO_3样品。利用物理特性测量系统,对Nd_(0.80)Sr_(0.20)CoO_3进行了交流磁化率、直流磁性、磁滞回线的测试分析。由测试结果可以看出:Nd_(0.80)Sr_(0.20)CoO_3样品的直流磁性具有较弱的自发铁磁成份,且交流磁化率呈现较弱的频率相关性。因此,由交、直流磁性的对比分析表明Nd_(0.80)Sr_(0.20)CoO_3样品具有团簇玻璃的性质。We systematically studied the magnetic properties of the cobalt oxide Nd0.80Sr0.20CoO3. The cobaltite Nd0.80Sr0.20CoO3 sample was prepared using conventional solid state reaction method. The dc magnetization,ac susceptibility,hysteresis loop of polycrystalline Nd0.80Sr0.20CoO3 was carried out by the physical properties measurement system. It was found that the sample has a small spontaneous magnetization and the weak frequency dependent peak. Therefore, by contrast analysis of dc magnetization and ac susceptibility,it shows that the Nd0.80Sr0.20CoO3 sample is the properties of cluster glass,which originates from the phase separation at low temperature.

关 键 词：钴氧化物 团簇玻璃 相分离 

分 类 号：O482.54[一般工业技术—材料科学与工程]