无机材料学报2016，Vol.31Issue(7)：699-704,6.DOI:10.15541/jim20150563
巨磁电阻材料A0.05Co0.95Cr2S4（A=Zn、Ni、Cd、Fe）的输运行为及磁性能研究
Transport Behavior and Magnetism of Colossal Magnetoresistance Materials A0.05Co0.95Cr2S4 (A=Zn, Ni, Cd, Fe)
摘要
Abstract
Spinel-type transition metal sulfides possess various super physical properties including colossal magnetore-sistance (CMR). The research of the mechanism of the CMR effect is of great value for the development of the CMR sul-fide materials, whereas the CMR effect of the spinel chrome-based sulfides is unclear up till now. The A0.05Co0.95Cr2S4 (A=Zn, Ni, Cd, Fe) samples were prepared by solid-state reaction method. Their effects of magnetic and non-magnetic metal elements on crystal structure and magnetic properties of CoCr2S4 after doping were studied. XRD measurement shows that the doped A0.05Co0.95Cr2S4 (A=Zn, Ni, Cd, Fe) samples exhibit pure spinel structure, in which their crystal cell parameters increase proportional to the ionic radius of the doping elements. Magnetoresistance measurement shows that all the samples exhibit giant magnetoresistance effect. Doping weakens the ferromagnetic interaction, which leads to the de-crease ofTC of A0.05Co0.95Cr2S4 (A=Zn, Ni, Cd, Fe). In the low field of 0.01 T, the curves of the zero-field cooling (ZFC) and field cooling (FC) exhibit magnetic irreversible phenomena. All the samples exhibit typical ferrimagnetic hysteresis loops, among which Zn0.05Co0.95Cr2S4 shows the largest value of coercivity.关键词
A0.05Co0.95Cr2S4/巨磁电阻效应/零场冷却(ZFC)/加场冷却(FC)/矫顽场Key words
A0.05Co0.95Cr2S4/colossal magnetoresistance/ZFC/FC/coercive field分类
数理科学引用本文复制引用
卢晓羽,贾楠,方必军,杨昭荣,张裕恒..巨磁电阻材料A0.05Co0.95Cr2S4（A=Zn、Ni、Cd、Fe）的输运行为及磁性能研究[J].无机材料学报,2016,31(7):699-704,6.基金项目
国家自然科学基金(11074258,51577015) （11074258,51577015）
江苏省高校自然科学研究重大项目(15KJA43002) （15KJA43002）
江苏高校优势学科建设工程资助项目 National Natural Science Foundation of China (11074258,51577015) （11074258,51577015）
Major Projects of Natural Science Research in Jiangsu Province (15KJA43002) （15KJA43002）
Priority Academic Program Development of Jiangsu Higher Education Institutions （）
