Thickness dependence of exchange anisotropy of polycrystalline Mn3Ir/Co-Fe bilayers -: art. no. 10K106
Thickness dependence of exchange anisotropy of polycrystalline Mn3Ir/Co-Fe bilayers -: art. no. 10K106
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DOI：
10.1063/1.1850858
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发表时间：
2005-05-15
影响因子：
3.2
通讯作者：
Takahashi, M
中科院分区：
文献类型：
--
作者：
Imakita, K;Tsunoda, M;Takahashi, M
研究了多晶 Mn3Ir/Co70Fe30 双层的交换各向异性对反铁磁层厚度 (d(AF)) 的依赖性。无论d(AF)如何，所检查的双层中Mn-Ir层的有序度几乎恒定为0.45。调查结果如下。在 d(AF)= 10 nm 时获得的最大单向各向异性常数 (J(K)) 为 1.3 erg/cm(2)。 dAF 的临界厚度（JK 为其最大值的一半）小于 5 nm，与无序 Mn-Ir 双层的临界厚度相当。随着Mn-Ir层的有序化，阻挡温度(TB)提高了几十度。 (c) 2005 年美国物理研究所。
The dependence of exchange anisotropy of polycrystalline Mn3Ir/Co70Fe30 bilayers on the antiferromagnetic layer thickness (d(AF)) was investigated. The degree of order of a Mn-Ir layer in the examined bilayers was almost constant of 0.45, regardless of d(AF). The findings are stated as follows. A maximum unidirectional anisotropy constant (J(K)) of 1.3 erg/cm(2) is obtained at d(AF)= 10 nm. The critical thickness of dAF, where JK becomes half of its maximum value, is less than 5 nm and comparable to that of the bilayer with disordered Mn-Ir. The blocking temperature (TB) is enhanced in several-ten degrees with ordering of the Mn-Ir layer. (c) 2005 American Institute of Physics.