Magnetization processes of small γ-Fe2O3 particles in non-magnetic matrix

被引：10

作者：

Masheva, V ^{[1
]}

Grigorova, M

Nihtianova, D

Schmidt, JE

Mikhov, M

机构：

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

[2] BAS, CLMC, Sofia 1000, Bulgaria

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

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 1999年 / 32卷 / 14期

关键词：

D O I：

10.1088/0022-3727/32/14/308

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The magnetization processes of small (approximate to 350 Angstrom) and nearly spherical particles of gamma-Fe2O3 were studied at room temperature using the initial, hysteresis and remanence magnetization curves. The effective interparticle interactions were estimated for a number of virgin and alternating current demagnetized samples of gamma-Fe2O3-SiO2 mixtures with different magnetic phase concentrations. A non-monotonous dependence of the interactions on the magnetic phase concentration was observed. It was related to the changes in the domain state of some of the particles from the single-domain to the multi-domain.

引用

页码：1595 / 1599

页数：5

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