A study of the frequency dependent susceptibility of a colloidal suspension of manganese ferrite (MnFe2O4) nanoparticles

被引：3

作者：

Fannin, PC ^{[1
]}

Vincent, D

Massart, G

Perov, P

Neveu, S

机构：

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

[2] Univ St Etienne, LRCCI, Lab Rech Capteurs & Colloides & Instrumentat, F-42023 St Etienne 2, France

[3] Univ Paris 06, Lab Physicochim Inorgan, F-75252 Paris 05, France

来源：

EUROPEAN PHYSICAL JOURNAL-APPLIED PHYSICS | 1999年 / 8卷 / 03期

关键词：

D O I：

10.1051/epjap:1999252

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Measurements of the complex, frequency dependent susceptibility, chi(omega) = chi'(omega) - i chi "(omega) over the frequency range 50 MHz to 15 GHz, of a surfacted ferrofluid comprising MnFe2O4 ferrite particles in dibutylphthalat, (DBP), as a function of a biasing magnetic field are presented. The biasing field was varied over the range 0 to 100 kAm(-1), and has enabled average values of anisotropy constant, (K) over bar, and anisotropy field (H) over bar(A) for the sample to be determined. Ferromagnetic resonance was exhibited for all values of the biasing field, covering the range 1.2 to 8.5 GHz, with the chi'(omega) component of the susceptibility going negative in the GHz region.

引用

页码：247 / 251

页数：5

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