MEASURING THE MAGNETIC-PROPERTIES OF A MICROSCOPIC PARTICLE

被引：0
|
作者：
KNOWLES, JE
机构：
来源：
PHILIPS TECHNICAL REVIEW | 1980年 / 39卷 / 02期
关键词：
MAGNETIC MEASUREMENTS;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A method has been devised for measuring the magnetic properties of single particles of magnetic tape. Since such particles are extremely small (about 0. 5 to 1 mu m long) an exceptionally sensitive method of measurement is needed. The new method is based on a determination of the rate at which a particle in suspension in a viscous fluid, after magnetization by a pulsed field of known value, rotates in the fluid when subjected to a weak opposing external field. A curve giving the relationship between magnetizing field and remanent magnetization is shown for a gamma -Fe//2O//3 particle and a similar one for a CrO//2 particle.
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页码：48 / 49
页数：2
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