Surface effects in CoFe2O4 magnetic fluids studied by Mossbauer spectrometry

被引：43

作者：

Didukh, P

Greneche, JM

Slawska-Waniewska, A

Fannin, PC

Casas, U

机构：

[1] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland

[2] Univ Maine, UMR CNRS 6087, F-72085 Le Mans, France

[3] Trinity Coll Dublin, Dept Elect & Elect Engn, Dublin 2, Ireland

[4] Inst Mat Sci Agh, Bellaterra 08193, Spain

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2002年 / 242卷 / PART I期

关键词：

ferrofluid; surface effects; Mossbauer spectroscopy; superparamagnetic particles;

D O I：

10.1016/S0304-8853(01)01044-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetic properties of CoFe2O4 particles were investigated by means of zero-field and in-field Mossbauer spectrometry. The studies include superparamagnetic (SP) relaxation as well as the surface phenomena of samples with different particle sizes both in the form of ferrofluids and powders. A core-shell model was applied to estimate the thickness of the surface "spin-canted" shell around particles. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：613 / 616

页数：4

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