Effects of partial substitution of Co on magnetocrystalline anisotropy and magnetic-field-induced strain in NiFeGa alloys
Effects of partial substitution of Co on magnetocrystalline anisotropy and magnetic-field-induced strain in NiFeGa alloys
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DOI：
10.1016/j.jmmm.2004.11.392
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发表时间：
2005-04
影响因子：
2.7
通讯作者：
H. Morito;K. Oikawa;A. Fujita;K. Fukamichi;R. Kainuma;K. Ishida;T. Takagi
中科院分区：
文献类型：
--
作者：
H. Morito;K. Oikawa;A. Fujita;K. Fukamichi;R. Kainuma;K. Ishida;T. Takagi
研究了Co部分替代对Ni-Fe-Ga合金磁晶各向异性和磁致应变的影响。为了获得马氏体相的单变量状态，将单轴压应力施加到单晶试样。6at%Co的部分替代使合金的居里温度TC提高到405 K，在300 K时，Ni 49 Fe 18 Ga 27 Co 6合金中的单变体马氏体相具有很大的磁晶各向异性常数K=1.2× 106 erg/cm ~ 3。此外，MFIS的幅度在很宽的温度范围内增强。因此，通过Co的替代来增加TC有效地改善了MFIS。
The effects of partial substitution of Co on magnetocrystalline anisotropy and magnetic-field-induced strain (MFIS) in Ni–Fe–Ga alloys have been investigated. To obtain a single-variant state in the martensite phase, uniaxial compressive stresses were applied to the single-crystalline specimen. The Curie temperature TCis increased up to 405K by a partial substitution of 6at% Co. The single-variant martensite phase in the Ni49Fe18Ga27Co6alloy exhibits a large value of magnetocrystalline anisotropy constant K=1.2×106erg/cm3at 300K. Furthermore, the magnitude of the MFIS is enhanced in a wide range of temperature. Therefore, the increase of TCby the substitution of Co effectively improves the MFIS.