Magnetic properties and Mossbauer spectra of nanosized CoFe2O4 powders

被引：270

作者：

Grigorova, M

Blythe, HJ

Blaskov, V

Rusanov, V

Petkov, V

Masheva, V

Nihtianova, D

Martinez, LM

Munoz, JS

Mikhov, M

机构：

[1] Univ Sofia, Fac Phys, St Kliment Ohridski, BU-1126 Sofia, Bulgaria

[2] Univ Sheffield, Dept Phys, Sheffield S3 7RH, S Yorkshire, England

[3] Bulgarian Acad Sci, Inst Gen & Inorgan Chem, BU-1113 Sofia, Bulgaria

[4] Univ Autonoma Barcelona, Dept Fis, E-08193 Barcelona, Spain

[5] Univ Fed Rio Grande do Sul, Inst Fis, BR-91501970 Porto Alegre, RS, Brazil

[6] Bulgarian Acad Sci, Cent Lab Mineral & Crystallog, Sofia 1000, Bulgaria

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1998年 / 183卷 / 1-2期

关键词：

fine particles; ferrite; anisotropy; -; multi-axial; superparamagnetism;

D O I：

10.1016/S0304-8853(97)01031-7

中图分类号：

T [工业技术];

学科分类号：

08 [工学];

摘要：

CoFe2O4 fine powders with particle sizes between 43 Angstrom (4.3 nm) and 465 Angstrom (46.5 nm) were produced by a method of 'gentle' chemistry. It was found that a surface layer with thickness of about 10 Angstrom does not contribute to the magnetization in the fields used. Maximum coercivity of 14 kOe and reduced remanence of 0.64 were measured at 5 K after magnetization in 50 kOe indicating a cubic-type magnetocrystalline anisotropy. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：163 / 172

页数：10

共 19 条

[1]

SURFACE SPIN CANTING IN BAFE12O19 FINE PARTICLES [J].