Structure, Magnetism and Magnetoresistance Effect of CD1-xCuxCr2S4 (x=0.01, 0.04, 0.1, 0.2)
文献类型：期刊论文
| 作者 | Yan, LQ ; Wang, FW ; Sun, Y ; Shen, J |
| 刊名 | IEEE TRANSACTIONS ON MAGNETICS
 |
| 出版日期 | 2012 |
| 卷号 | 48期号:11页码:3634 |
| 关键词 | X-RAY PHOTOELECTRON CHALCOGENIDE SPINELS ELECTRONIC-STRUCTURE COPPER XPS CUCR2SE4 |
| ISSN号 | 0018-9464 |
| 通讯作者 | Yan, LQ (reprint author), Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, State Key Lab Magnetism, Beijing 100190, Peoples R China. |
| 中文摘要 | A series of Cd1-xCuxCr2S4 (x = 0.01, 0.04, 0.1, and 0.2) ceramics have been prepared by a solid state reaction method. The X-ray diffraction patterns suggest that the samples have a cubic spinel phase with a space group Fd3m and a tiny amount of Cr2O3 impurity phase. X-ray photoemission spectroscopy reveals a bivalence of Cu and trivalence of Cr in Cd0.8Cu0.2Cr2S4. The replacement of Cd by Cu leads to a slight shift of magnetic transition temperature T-C. The saturation magnetic moment per formula unit at 2 K and effective moments in paramagnetic region decrease with Cu content, which is attributed to the coexistence of low spin state Cr3+ with S = 1/2 and high spin state Cr3+ with S = 3/2 as deduced from the M-H and M-T measurements. The transport measurements suggest that the Cu2+ doping enhances the carrier density. In contrast, a significant decrease in magnetoresistance is observed upon Cu doping. The magnetoresistance effect is discussed based on the magnetic polaron theory. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/53632]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Yan, LQ,Wang, FW,Sun, Y,et al. Structure, Magnetism and Magnetoresistance Effect of CD1-xCuxCr2S4 (x=0.01, 0.04, 0.1, 0.2)[J]. IEEE TRANSACTIONS ON MAGNETICS,2012,48(11):3634. |
| APA | Yan, LQ,Wang, FW,Sun, Y,&Shen, J.(2012).Structure, Magnetism and Magnetoresistance Effect of CD1-xCuxCr2S4 (x=0.01, 0.04, 0.1, 0.2).IEEE TRANSACTIONS ON MAGNETICS,48(11),3634. |
| MLA | Yan, LQ,et al."Structure, Magnetism and Magnetoresistance Effect of CD1-xCuxCr2S4 (x=0.01, 0.04, 0.1, 0.2)".IEEE TRANSACTIONS ON MAGNETICS 48.11(2012):3634. |
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来源：物理研究所
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