Large uniaxial magnetocrystalline anisotropy for Co50Pt50 disordered alloy films with hexagonal-close-packed stacking structure by substitutingPt with Rh
Large uniaxial magnetocrystalline anisotropy for Co50Pt50 disordered alloy films with hexagonal-close-packed stacking structure by substitutingPt with Rh
复制标题
Rh取代Pt的六方密排Co50Pt50无序合金薄膜的大单轴磁晶各向异性
DOI：
10.1088/0022-3727/46/17/172001
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
and M. Takahashi
中科院分区：
文献类型：
--
作者：
N. Nozawa;S. Saito;S. Hinata;and M. Takahashi
为了提高Co 50 Pt 50薄膜的单轴磁晶各向异性常数（K u），研究了CoM （M= Pt, Pd, Rh）无序薄膜在六方密排（hcp）晶粒中的层错（sf）。结果表明，Co 50 Rh 50薄膜具有近乎完美的hcp堆积，而Co 50 Pt 50和Co 50 Pd 50薄膜则含有SFs。因此，Co - 50pt - 50薄膜中的Pt原子被Rh原子取代，通过降低SFs的密度来提高K - u。当r= 0.5时，Co 50 (Pt 1−r Rh r) 50薄膜的最大ku接近1× 10.7 erg cm−3，是Co 50 Pt 50薄膜的10倍左右。
In order to increase the uniaxial magnetocrystalline anisotropy constant (K u) of a Co 50 Pt 50 film, CoM (M= Pt, Pd, Rh) disordered films are investigated with respect to stacking faults (SFs) in hexagonal-close-packed (hcp) grains. The Co 50 Rh 50 film was revealed to have nearly perfect hcp stacking, while the Co 50 Pt 50 and Co 50 Pd 50 films contain SFs. Therefore, Pt atoms in the Co 50 Pt 50 films were replaced by Rh atoms to enhance K u by decreasing the density of SFs. The Co 50 (Pt 1− r Rh r) 50 film with r= 0.5 showed a maximum K u of nearly 1× 10 7 erg cm− 3, which is around 10 times larger than that for the Co 50 Pt 50 film.