INTRINSIC MAGNETIC-RESONANCE IN SUPERPARAMAGNETIC SYSTEMS

被引：18

作者：

RAIKHER, YL

STEPANOV, VI

机构：

[1] Institute of Continuous Media Mechanics, Urals Branch, Russian Academy of Sciences, Perm

来源：

PHYSICAL REVIEW B | 1995年 / 51卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.51.16428

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A unified description for different mechanisms of the intrinsic FMR absorption-line broadening in superparamagnets is developed and used for the analysis of their temperature behavior. Whereas the homogeneous contribution provokes a monotonic increase of the linewidth, the nonhomogeneous one saturates with the temperature growth. The crossover of these effects may account for the experimentally observed temperature-independent linewidths in ferromagnetic fine-particle systems. © 1995 The American Physical Society.

引用

页码：16428 / 16431

页数：4

共 16 条

[1] EFFECT OF A MAGNETIC FIELD ON SUPERPARAMAGNETIC RELAXATION TIME [J].

AHARONI, A .

PHYSICAL REVIEW, 1969, 177 (02) :793-&

[2] SUSCEPTIBILITY RESONANCE AND MAGNETIC VISCOSITY [J].

AHARONI, A .

PHYSICAL REVIEW B, 1992, 46 (09) :5434-5441

[3] RELAXATION-TIME OF SUPERPARAMAGNETIC PARTICLES WITH CUBIC ANISOTROPY [J].

AHARONI, A .

PHYSICAL REVIEW B, 1973, 7 (03) :1103-1107

[4] RELAXATION-TIME OF FINE MAGNETIC PARTICLES IN UNIAXIAL SYMMETRY [J].

BESSAIS, L ;

BENJAFFEL, L ;

DORMANN, JL .

PHYSICAL REVIEW B, 1992, 45 (14) :7805-7815

[5] THERMAL FLUCTUATIONS OF A SINGLE-DOMAIN PARTICLE [J].

BROWN, WF .

PHYSICAL REVIEW, 1963, 130 (05) :1677-+

[6] EXACT ANALYTIC FORMULA FOR THE CORRELATION TIME OF A SINGLE-DOMAIN FERROMAGNETIC PARTICLE [J].

COFFEY, WT ;

CROTHERS, DSF ;

KALMYKOV, YP ;

MASSAWE, ES ;

WALDRON, JT .

PHYSICAL REVIEW E, 1994, 49 (03) :1869-1882

[7]

COFFEY WT, 1993, ADV CHEM PHYS 2, V85, P667

[8]

GEKHT RS, 1983, FIZ MET METALLOVED+, V55, P225

[9] DUAL-SPIN DYNAMICS OF SMALL FE PARTICLES [J].

HENNION, M ;

BELLOUARD, C ;

MIREBEAU, I ;

DORMANN, JL ;

NOGUES, M .

EUROPHYSICS LETTERS, 1994, 25 (01) :43-48

[10]

NEEL L, 1949, CR HEBD ACAD SCI, V228, P664

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