Magnetic and structural investigations on barium hexaferrite ferrofluids

被引：29
作者：
Müller, R
Hiergeist, R
Gawalek, W
Hoell, A
Wiedenmann, A
机构：
[1] Inst Phys Hochtechnol eV, D-07745 Jena, Germany
[2] Hahn Meitner Inst Berlin GmbH, D-14109 Berlin, Germany
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2002年 / 252卷 / 1-3期
关键词：
barium hexaferrite; ferrofluid; particle size distribution; AC-susceptibility; SANS;
D O I：
10.1016/S0304-8853(02)00682-0
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Barium hexaferrite BaFe12-2xTixCoxO19 ferrofluids have been prepared using oleic acid as surfactant and Isopar M(R) or dodecane as carrier liquid. The ferrite particles were prepared by glass crystallization. Hysteresis parameters, the initial susceptibility versus temperature and the magnetic particle size were obtained by VSM. Ferrofluids with a partly deuterated carrier liquid were investigated by small angle neutron scattering (SANS). SANS curves lead to a bimodal size distribution consisting of single magnetic particles with an organic shell and aggregated particles with an incomplete organic layer. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：43 / 45
页数：3
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