Magnetic relaxation and superparamagnetism in nanocrystalline ferrites

被引：7

作者：

Batlle, X ^{[1
]}

delMuro, MG ^{[1
]}

Labarta, A ^{[1
]}

Gornert, P ^{[1
]}

机构：

[1] IPHT, D-6900 JENA, GERMANY

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1996年 / 157卷

关键词：

superparamagnetism; thermomagnetic relaxation; time-dependent phenomena;

D O I：

10.1016/0304-8853(95)01019-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The validity of the T ln(t/tau(0)) scaling procedure has been tested by independent determination of the energy barrier distribution f(E) from high temperature magnetization curves, and tau(0) by analysing the in-phase component of the ac susceptibility. The effect of interparticle interactions on f(E) is discussed. It is shown that the derivative of the master curve M versus T ln(t/tau(0)) leads to the energy barrier distribution.

引用

页码：191 / 192

页数：2

共 7 条

[1] MAGNETIC STUDY OF M-TYPE DOPED BARIUM FERRITE NANOCRYSTALLINE POWDERS
BATLLE, X
DELMURO, MG
TEJADA, J
PFEIFFER, H
GORNERT, P
SINN, E
[J]. JOURNAL OF APPLIED PHYSICS, 1993, 74 (05) : 3333 - 3340
[2] STATIC MAGNETIC-PROPERTIES OF NANOCRYSTALLINE CO-TI DOPED BARIUM FERRITE BAFE12-2XCOXTIXO19 (X=0.8)
BATLLE, X
DELMURO, MG
TEJADA, J
PFEIFFER, H
GORNERT, P
SINN, E
[J]. IEEE TRANSACTIONS ON MAGNETICS, 1994, 30 (02) : 708 - 710
[3] ON THE ROLE OF PARTICLE ROTATION ON THE BLOCKING PROCESSES OF BAFE10.4CO0.8TI0.8O19 NANOCRYSTALLINE POWDER
BATLLE, X
DELMURO, MG
LABARTA, A
MARTINEZ, B
GORNERT, P
[J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1995, 140 : 473 - 474
[4] IGLESIAS O, IN PRESS Z PHYS B
[5] MAGNETIC STUDY OF SPIN FREEZING IN THE SPIN-GLASS BACO6TI6O19 - STATIC AND DYNAMIC ANALYSIS
LABARTA, A
BATLLE, X
MARTINEZ, B
OBRADORS, X
[J]. PHYSICAL REVIEW B, 1992, 46 (14): : 8994 - 9001
[6] MAGNETIC-RELAXATION IN SMALL-PARTICLE SYSTEMS - T IN(T/TAU-0) SCALING
LABARTA, A
IGLESIAS, O
BALCELLS, L
BADIA, F
[J]. PHYSICAL REVIEW B, 1993, 48 (14): : 10240 - 10246
[7] Monte Carlo simulation of magnetic relaxation in small-particle systems with dipolar interactions
Ribas, R
Labarta, A
[J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1996, 157 : 351 - 352

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