MAGNETIC AND MAGNETOOPTICAL PROPERTIES OF COBALT-PLATINUM ALLOYS WITH PERPENDICULAR MAGNETIC-ANISOTROPY
MAGNETIC AND MAGNETOOPTICAL PROPERTIES OF COBALT-PLATINUM ALLOYS WITH PERPENDICULAR MAGNETIC-ANISOTROPY
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DOI：
10.1063/1.108074
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发表时间：
1992-11-30
影响因子：
4
通讯作者：
NOTARYS, H
中科院分区：
文献类型：
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作者：
WELLER, D;BRANDLE, H;NOTARYS, H
Pt含量在0.45 ≤ x ≤ 0.9范围内的Co 1-xPtx合金显示出相当大的垂直磁各向异性、100%垂直剩磁和160 kA/m范围内的矫顽力。这种材料的薄膜通过电子束蒸发在熔融石英或Si上生长，衬底温度在150到350摄氏度之间。光谱研究的极性克尔旋转显示了显着增强的Pt相关的紫外峰。Co/Pt多层膜和合金的静态信号电平RX（θ（k）2 + θ（k）2）1/2的比较表明，在合金的情况下，总的增强50%。对于Co（约22）Pt（约78）组合物，观察到约200 ℃的居里温度。这些特性，加上潜在的高化学稳定性和易于制造，使得Co 1-xPtx合金对于短波长磁光记录非常有吸引力的材料。
Co1-xPtx alloys with Pt contents in the range 0.45 less-than-or-equal-to x less-than-or equal-to 0.9 show sizable perpendicular magnetic anisotropy, 100% perpendicular remanence and coercivities in the range 160 kA/m. Thin films of this material are grown by electron beam evaporation onto fused silica or Si, at substrate temperatures between 150 and 350-degrees-C. Spectroscopic investigations of the polar Kerr rotation show a significant enhancement of the Pt related UV peak. A comparison of the static signal levels R X (theta(k)2 + epsilon(k)2)1/2 of Co/Pt multilayers and alloys shows an overall 50% enhancement in the case of alloys. Curie temperatures around 200-degrees-C are observed for Co(approximately 22)Pt(approximately 78) compositions. These properties, together with the potentially high chemical stability and ease of manufacturing make Co1-xPtx alloys very attractive materials for short wavelength magneto-optic recording.