MICROWAVE PROPERTIES OF FERROFLUID COMPOSITES

被引:11
作者
POPPLEWELL, J
DAVIES, P
LLEWELLYN, JP
OGRADY, K
机构
[1] Univ Coll of North Wales, Dep of, Physics, Bangor, Wales, Univ Coll of North Wales, Dep of Physics, Bangor, Wales
关键词
MAGNETIC MEASUREMENTS - Relaxation - MICROWAVES;
D O I
10.1016/0304-8853(86)90240-4
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Ferrofluid composites containing dispersed metallic particles of tin or copper have a magnetically induced dichroism, which is particle concentration dependent, in the 3 mm microwave region. The system relaxes when the magnetic field ( approximately equals 50 Oe) is removed with an initial relaxation time tau approximately equals 1 s. The subsequent relaxation through Brownian motion is significantly longer with tau approximately equals 10**3 s.
引用
收藏
页码:761 / 762
页数:2
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