PERMANENT-MAGNET VARIABLE FLUX SOURCES

被引：26

作者：

CUGAT, O

HANSSON, P

COEY, JMD

机构：

[1] Physics Department, Trinity College

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1994年 / 30卷 / 06期

关键词：

D O I：

10.1109/20.334162

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：

Rotatable transversely-magnetized magnet rods can be used to generate variable, uniform magnetic fields or field gradients. A four-rod device for use at the specimen stage of an optical microscope is described where the field can be in-plane or perpendicular to the stage. The maximum flux density ranges from 36 mT (360 G) for isotropic ferrite to 210 mT (2.1 kG) for sintered Nd-Fe-B. Calculated and measured field profiles are in good agreement. Homogeneity is better than 1 % of maximum in a region of diameter 7 mm or 3.5 mm at maximum and zero field, respectively.

引用

页码：4602 / 4604

页数：3