Magnetic properties of the MnBi intermetallic compound
Magnetic properties of the MnBi intermetallic compound
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DOI：
10.1063/1.1405434
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发表时间：
2001-09-17
影响因子：
4
通讯作者：
Bollero, A
中科院分区：
文献类型：
--
作者：
Yang, JB;Kamaraju, K;Bollero, A
通过高温烧结和磁纯化获得了一种含有超过90 wt%低温相（LTP）的锰铋合金。粘结锰铋磁体的矫顽力随温度升高而增加。在400 K时已达到2.0 T的矫顽力。该磁体在室温下的最大磁能积（BH）max为7.7 MGOe（61 kJ/m³），在400 K时为4.6 MGOe（37 kJ/m³）。中子衍射和磁性数据揭示了一种自旋重取向，这导致LTP锰铋合金在较低温度下具有低各向异性场和矫顽力。（C）2001美国物理学会。
A MnBi alloy containing over 90 wt % low-temperature phase (LTP) has been obtained by high-temperature sintering and magnetic purification. The coercivity of the bonded MnBi magnet increases with increasing temperatures. A coercivity of 2.0 T has been achieved at 400 K. The maximum energy product (BH)(max) of the magnet is 7.7 MGOe (61 kJ/m(3)) and 4.6 MGOe (37 kJ/m(3)) at room temperature. and 400 K, respectively. Neutron diffraction and magnetic data reveal a spin reorientation, which gives rise to low anisotropy fields and coercivity at lower temperatures for the LTP MnBi alloy. (C) 2001 American Institute of Physics.