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

页码：3962 / 3964

页数：3

共 6 条

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