| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Fabrication, Structural and Magnetic Properties for Aligned MnBi |
LIU Yong-Sheng1, ZHANG Jin-Cang2, REN Zhong-Ming3), GU Min-An1, YANG Jing-Jing1, CAO Shi-Xun2, YANG Zheng-Long4 |
| 1Department of Mathematics and Physics, Shanghai University of Electric Power, Shanghai 200090 2Department of Physics, Shanghai University, Shanghai 200444 3Department of Materials Science and Engineering, Shanghai University, Shanghai 200444 4Key Laboratory of Advanced Civil Engineering Materials (Ministry of Education), Tongji University, Shanghai 200092 |
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| Cite this article: |
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LIU Yong-Sheng, ZHANG Jin-Cang, REN Zhong-Ming) et al 2010 Chin. Phys. Lett. 27 097502 |
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Abstract MnBi compound is fabricated under a magnetic field of 1 T, and the c-axis of hexagonal MnBi crystal is aligned parallel to the magnetic field direction. The saturation magnetization Ms decreases with the increase of temperature. At temperatures below 200 K, the coercive field Hc is about 150 Oe, while the coercive field Hc increases with temperature above 200 K. From 200 K to 300 K, the remnant magnetization Mr and the Mr/Ms increase with the temperature. Below 200 K, Mr and Mr/Ms reach roughly a constant value. However, there is an abnormal increase at 100 K in Hc, Mr and Mr/Ms, which comes from a spin-reorientation in MnBi. Magnetization results show the spin-reorientation for MnBi at about 91 K due to the variations of the anisotropy constants.
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| Keywords:
75.30.-m
75.25.-j
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Received: 31 May 2010
Published: 25 August 2010
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| PACS: |
75.30.-m
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(Intrinsic properties of magnetically ordered materials)
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75.25.-j
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(Spin arrangements in magnetically ordered materials (including neutron And spin-polarized electron studies, synchrotron-source x-ray scattering, etc.))
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