Aging effects on microstructure and GMR in Au-Co and Au-Co-X(X = Cu, Ni, Fe) bulk alloys

被引：0
|
作者：
Lee, C.G. [1 ]
Kim, S.H. [1 ]
Lee, D.H. [1 ]
Fukamichi, K. [1 ]
机构：
[1] Changwon Natl Univ, Kyungnam, Korea, Republic of
来源：
IEEE Transactions on Magnetics | 1999年 / 35卷 / 5 pt 1期
关键词：
Aging of materials - Crystal microstructure - Gold alloys - Grain growth - Granular materials - Magnetoresistance - Metallographic microstructure - Precipitation (chemical) - Transmission electron microscopy;
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摘要：
Aging effects on the microstructure and the GMR in Au-Co and Au-Co-X(X = Fe, Ni and Cu) bulk granular alloys have been investigated. The TEM observation shows that Co particles are a plate-like type and grew with the aging time. The optimum size for the maximum MR ratio is a length of about 10 nm and a thickness of 0.6 nm. In Au-Co-X(X = Cu, Ni and Fe) bulk alloys, it was confirmed that the maximum valve of the MR ratio is about 3.5% at 10 kOe for Au80Co15Fe5 bulk alloy aged at 300 °C for 1 hr.
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页码：2856 / 2858
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