Evidence of reentrant behavior in nanoparticles of ferrite in ferrofluids

被引：6

作者：

Zins, D

Nakatsuka, K

Gendron, F

Rivoire, M

机构：

[1] Univ Paris 06, Lab Milieux Desordonnes & Heterogens, F-75252 Paris 05, France

[2] Univ Paris 06, L12C Colloides Magnet, F-75252 Paris, France

[3] Tohoku Univ, Grad Sch Engn, Aiba Ku, Sendai, Miyagi 980, Japan

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1999年 / 201卷

关键词：

ferrofluids; ferromagnetic resonance; spin glass; disordered magnetic spinel;

D O I：

10.1016/S0304-8853(99)00057-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ferrofluids made up of mixed ferrite particles Mn1-xZnxFe2O4 mono-dispersed in glycerol have been studied by ferromagnetic resonance (FMR) in X band and by magnetization measurements in the temperature range of 3.5-300 K. FMR spectra have been recorded on field-cooled samples. Some features of these spectra are typical of a transition from ferro to spin-glass state, i.e. a reentrant behavior. By taking relaxation into account in the frame of Landau Lifchitz formalism, the freezing temperature T-f,= 40K was accurately determined, in good agreement with temperature measurements of the static magnetic susceptibility of field-cooled ferrofluid samples. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

引用

页码：84 / 87

页数：4

共 8 条

[1]

BRABERS VAM, 1995, HDB MAGNETIC MAT, V8, P217

[2] DZYALOSHINSKY-MORIYA ANISOTROPY IN REENTRANT ALLOYS [J].

CAMPBELL, IA ;

HURDEQUINT, H ;

HIPPERT, F .

PHYSICAL REVIEW B, 1986, 33 (05) :3540-3542

[3] MICROWAVE MAGNETIC-RESONANCE OF THE INSULATING SPIN-GLASS SPINEL CDIN0.4CR1.6S4 [J].

FIORANI, D ;

NOGUES, M ;

VITICOLI, S .

SOLID STATE COMMUNICATIONS, 1982, 41 (07) :537-540

[4]

Morrish A H, 1965, PHYS PRINCIPLES MAGN, P555

[5]

MORRISH AH, 1965, PHYS PRINCIPLES MAGN, P549

[6] AQUEOUS FERROFLUIDS BASED ON MANGANESE AND COBALT FERRITES [J].

TOURINHO, FA ;

FRANCK, R ;

MASSART, R .

JOURNAL OF MATERIALS SCIENCE, 1990, 25 (07) :3249-3254

[7] Spin glass and percolation in MnCr2-2xIn2xS4 system [J].

Tsurkan, V ;

Baran, M ;

Szymczak, R ;

Szymczak, H .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1997, 172 (03) :317-321

[8] INSULATING SPIN-GLASSES [J].

VILLAIN, J .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1979, 33 (01) :31-42

← 1 →