Rotational hysteresis losses in isotropic media

被引：2
|
作者：
Harrison, SA [1 ]
Street, R [1 ]
Budge, JR [1 ]
Jones, SK [1 ]
机构：
[1] Univ Western Australia, Dept Phys, Nedlands, WA 6907, Australia
来源：
IEEE TRANSACTIONS ON MAGNETICS | 1999年 / 35卷 / 05期
关键词：
isotropic media; magnetic measurements; rotational hysteresis losses;
D O I：
10.1109/20.800722
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A simple method of measuring magnetic rotational hysteresis losses in isotropic media is described. The method involves measuring the angular deceleration of a sample set rotating in a magnetic field. By using air bearings to minimise friction and allowing the moment of inertia of the rotating system to be varied a maximum sensitivity of 10(-6) J cycle(-1) has been achieved with a precision of 3 x 10(-7) 3 cycle(-1), The method has been used to measure rotational hysteresis losses as a function of applied field strength in isotropic samples of gamma-Fe2O3, AlNiCo and MQ1, a high coercivity NdFeB permanent magnet alloy. The data from these measurements was found to be in good agreement with that obtained by established methods of measurement.
引用
收藏
页码：3962 / 3964
页数：3
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