Low temperature electron paramagnetic resonance anomalies in Fe-based nanoparticles

被引：50

作者：

Koksharov, YA

Gubin, SP

Kosobudsky, ID

Beltran, M

Khodorkovsky, Y

Tishin, AM

机构：

[1] Beltran Inc, Brooklyn, NY 11210 USA

[2] Moscow MV Lomonosov State Univ, Fac Phys, Moscow, Russia

[3] NS Kurnakov Gen & Inorgan Chem Inst, Moscow 117907, Russia

来源：

JOURNAL OF APPLIED PHYSICS | 2000年 / 88卷 / 03期

关键词：

D O I：

10.1063/1.373879

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A study of the electron paramagnetic resonance of Fe-based nanoparticles embedded in polyethylene matrix was performed as a function of temperature ranging from 3.5 to 500 K. Nanoparticles with a narrow size distribution were prepared by the high-velocity thermodestruction of iron-containing compounds. A temperature-driven transition from superparamagnetic to ferromagnetic resonance was observed for samples with different Fe content. The unusual behavior of the spectra at about 25 K is considered evidence of a spin-glass state in iron oxide nanoparticles. (C) 2000 American Institute of Physics. [S0021-8979(00)01213-5].

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页码：1587 / 1592

页数：6

相关论文

共 39 条

[1] SUPERPARAMAGNETISM AND EXCHANGE ANISOTROPY IN MICROPARTICLES OF MAGNETITE EMBEDDED IN AN INERT CARBONACEOUS MATRIX [J].

AHARONI, SM ;

LITT, MH .

JOURNAL OF APPLIED PHYSICS, 1971, 42 (01) :352-&

[2] FERROMAGNETIC RESONANCE ABSORPTION IN COLLOIDAL SUSPENSIONS [J].

BAGGULEY, DMS .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1955, 228 (1175) :549-567

[3] Relaxometry, magnetometry, and EPR evidence for three magnetic phases in the MR contrast agent MION-46L [J].

Bulte, JWM ;

Brooks, RA ;

Moskowitz, BM ;

Bryant, LH ;

Frank, JA .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 194 (1-3) :217-223

[4] MEASUREMENTS OF PARTICLE-SIZE DISTRIBUTION PARAMETERS IN FERROFLUIDS [J].

CHANTRELL, RW ;

POPPLEWELL, J ;

CHARLES, SW .

IEEE TRANSACTIONS ON MAGNETICS, 1978, 14 (05) :975-977

[5]

Chien C.L., 1991, J APPL PHYS, V69, P5267, DOI [10.1063/1.348946, DOI 10.1063/1.348946, 10.1063/1.348946.]

[6] ANISOTROPY-FIELD OF SMALL MAGNETIC PARTICLES AS MEASURED BY RESONANCE [J].

DEBIASI, RS ;

DEVEZAS, TC .

JOURNAL OF APPLIED PHYSICS, 1978, 49 (04) :2466-2469

[7] Evidence of spin disorder at the surface-core interface of oxygen passivated Fe nanoparticles [J].

Del Bianco, L ;

Hernando, A ;

Multigner, M ;

Prados, C ;

Sanchez-Lopez, JC ;

Fernandez, A ;

Conde, CF ;

Conde, A .

JOURNAL OF APPLIED PHYSICS, 1998, 84 (04) :2189-2192

[8]

Dormann J.L., 1992, Magnetic properties of fine particles

[9] Thermal variation of the relaxation time of the magnetic moment of gamma-Fe2O3 nanoparticles with interparticle interactions of various strengths [J].

Dormann, JL ;

DOrazio, F ;

Lucari, F ;

Tronc, E ;

Prene, P ;

Jolivet, JP ;

Fiorani, D ;

Cherkaoui, R ;

Nogues, M .

PHYSICAL REVIEW B, 1996, 53 (21) :14291-14297

[10]

Dormann JL, 1997, ADV CHEM PHYS, V98, P283, DOI 10.1002/9780470141571.ch4

← 1 2 3 4 →