On the magnetic properties of nanosized CoFe2O4

被引：28

作者：

Masheva, V

Grigorova, M

Valkov, N

Blythe, HJ

Midlarz, T

Blaskov, V

Geshev, J

Mikhov, M

机构：

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

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

[3] ILHMFLT, Wroclaw, Poland

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

[5] UFRGS, Inst Fis, BR-91501970 Porto Alegre, RS, Brazil

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1999年 / 196卷

关键词：

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

D O I：

10.1016/S0304-8853(98)00688-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Thermomagnetic properties of fine CoFeO4 particles with average sizes of 43, 51, 66. 195 and 465 Angstrom were investigated between 5 and 800 K in fields up to 140 kOe. The particles with sizes of 43 and 51 Angstrom behave superparamagnetically at room temperature, but the others exhibit mixed superparamagnetic and ferrimagnetic behavior. The concentration of the ferrimagnetic phases and their magnetic properties were evaluated. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：128 / 130

页数：3

共 6 条

[1]

Berkowitz A. E., 1959, J APPL PHYS, V30, P8134, DOI [DOI 10.1063/1.2185853, 10.1063/1.2185853]

[2] THE OBSERVATION OF MULTIAXIAL ANISOTROPY IN ULTRAFINE COBALT FERRITE PARTICLES USED IN MAGNETIC FLUIDS [J].