TEMPERATURE-DEPENDENCE OF BIREFRINGENCE AND DICHROISM IN MAGNETIC FLUIDS

被引：9

作者：

ABUSAFIA, H

ABUALJARAYESH, I

MAHMOOD, S

YUSUF, NA

机构：

[1] Physics Department, Yarmouk University, Irbid

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1990年 / 87卷 / 03期

关键词：

D O I：

10.1016/0304-8853(90)90768-L

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Measurements of the birefringence and dichroism in Fe3O4 magnetic fluids were undertaken in the temperature range 100-320 K in magnetic fields up to 0.9 kOe. Our results show that both the birefringence and dichroism are not noticeable for temperatures below 170 K. Above 170 K there is an increase with temperature exhibiting a peak at ∼ 190 and ∼ 270 K respectively. Moreover, our results show that for temperatures above that at which the peak occurs the birefringence follows a generalized Curie-Weiss law yielding positive ordering temperatures. © 1990.

引用

页码：333 / 338

页数：6

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