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MAGNETIC PROPERTIES OF Co-Cr/MUMETAL DOUBLE LAYER FILMS.

被引：0
|
作者：
Parker, F.T. [1 ]
机构：
[1] Univ of California at San Diego, La, Jolla, CA, USA, Univ of California at San Diego, La Jolla, CA, USA
来源：
IEEE Transactions on Magnetics | 1986年 / MAG-22卷 / 01期
关键词：
CHROMIUM AND ALLOYS - COBALT AND ALLOYS - Magnetic Properties - Sputtering;
D O I：
10.1109/tmag.1986.1064274
中图分类号：
学科分类号：
摘要：
A dc magnetron sputtered multilayer (Co-Cr mumetal) film is examined for magnetic coupling of the sublayers. No evidence for physical coupling is observed. The multilayer coercivity near the perpendicular direction has a strong dependence on angle due to the planar mumetal component. The coercivity of the mumetal exhibits Kondorsky-type angular behavior. Coercivities of the Co-Cr film measured parallel and perpendicular to the field direction both decrease linearly from 100 K to 340 K, with a room temperature coefficient beta equals (1/H//c )( DELTA H//c / DELTA T) equals -0. 2 percent/K. The temperature dependence of coercivity can be modeled on a domain wall pinning theory based on exchange fluctuations over a small domain wall area. It is shown that high Curie temperatures are needed to minimize thermal variation in recording output signal. X-ray transmission attenuation is shown to be a useful tool for determining the Co-Cr thickness in a multilayer film.
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页码：19 / 25
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