SURFACTANT ASSISTED BALL-MILLING OF BARIUM FERRITE

被引：22

作者：

CAMPBELL, SJ ^{[1
]}

KACZMAREK, WA ^{[1
]}

WU, E ^{[1
]}

JAYASURIYA, KD ^{[1
]}

机构：

[1] AUSTRALIAN NATL UNIV,RES SCH PHYS SCI & ENGN,DEPT APPL MATH,CANBERRA,ACT 0200,AUSTRALIA

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1994年 / 30卷 / 02期

基金：

澳大利亚研究理事会;

关键词：

D O I：

10.1109/20.312394

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：

The effects of wet-milling barium ferrite in the presence of cationic or anionic surface active substances have been investigated by x-ray diffraction and Mossbauer spectroscopy measurements. Evidence for superparamagnetic relaxation of fine particles, both in the surfactant assisted ball-milled samples and in samples dry-milled in air is obtained from the room temperature and 4.2 K Mossbauer spectra. The similarity between samples milled at pH 3 with the cationic or anionic surfactants is due to electrostatic interactions of the surfactants' hydrocarbon groups with the positively charged barium ferrite surface.

引用

页码：742 / 745

页数：4

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