摘要
采用直流溅射的方法，在Ｐｔ３Ｃｏ 合金靶上加贴Ｎｉ 片，把（Ｐｔ３Ｃｏ）１ － ｘＮｉｘ 合金薄膜中非磁性原子与磁性原子的比率从３∶１ 调制到１∶１ ．通过高角Ｘ 射线衍射谱和磁性的研究，发现〈１１１〉织构至少在０－３３ —０－５０ 的Ｎｉ 成分范围内不是引起垂直磁各向异性的主要原因．在此基础上研究了（Ｐｔ３Ｃｏ）１ － ｘＮｉｘ 合金薄膜的磁光特性．研究表明，适量Ｎｉ 合金化（ ｘ ＝ ０－４３） 可以获得较低的（Ｐｔ３Ｃｏ）１ － ｘＮｉｘ 合金薄膜居里温度，同时保持较高的垂直磁各向异性、较大的矫顽力和蓝波长下较高的Ｋｅｒｒ 转角，从而为ＰｔＣｏＮｉ 合金薄膜的实用化提供了实验参考．
The ratio of non\|magnetic to magnetic atoms was adjusted from 3∶1 to 1∶1 within the (Pt\-3Co) 1-x Ni x system by sticking Ni chips to the Pt\-3Co target. X\|ray diffraction and magnetic results showed that perpendicular magnetic anisotropy was not caused by 〈111〉 texture at least in the Ni content range of 0 33—0 50. Furthermore, the effect of the Ni addition to the CoPt\-3 alloy films on their magnetic and magneto\|optical properties were investigated. The result shows that satisfactory Curie temperature T C, cohercivity H c and Kerr rotation can be simultaneously obtained by selecting suitable Ni content ( x =0.43) in the (Pt\-3Co) 1-x Ni x system. This work provides an experimental basis for the application of PtCoNi alloy films.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
1999年第S1期217-223,共7页
Acta Physica Sinica
基金
国家自然科学基金!( 批准号:69777016)
