EXPERIMENTS IN QUANTUM MAGNETIC-RELAXATION

被引：31

作者：

TEJADA, J

ZHANG, XX

机构：

[1] Facultat de Fisíca, Universitat de Barcelona, 08028 Barcelona

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1995年 / 140卷

关键词：

D O I：

10.1016/0304-8853(94)00497-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present a comprehensive study of low temperature magnetic relaxation in a variety of magnetic systems. We show data for both logarithmic relaxation (many-barrier problem) and exponential decay of magnetization (single-barrier problem). Our key observation is the non-thermal character of the relaxation below a few kelvin. Our data on the exponential relaxation provide, for the first time, an opportunity for a precise comparison between theory and experiment.

引用

页码：1815 / 1818

页数：4

共 17 条

[11] ON MAGNETIC-RELAXATION IN ANTIFERROMAGNETIC HORSE-SPLEEN FERRITIN PROTEINS [J].

TEJADA, J ;

ZHANG, XX .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1994, 6 (01) :263-266

[12] NONTHERMAL VISCOSITY IN MAGNETS - QUANTUM TUNNELING OF THE MAGNETIZATION [J].

TEJADA, J ;

ZHANG, XX ;

BALCELLS, L .

JOURNAL OF APPLIED PHYSICS, 1993, 73 (10) :6709-6714

[13] QUANTUM RELAXATION IN RANDOM MAGNETS [J].

TEJADA, J ;

ZHANG, XX .

PHYSICAL REVIEW B, 1993, 47 (22) :14977-14987

[14] NONCOHERENT QUANTUM EFFECTS IN THE MAGNETIZATION REVERSAL OF A CHEMICALLY DISORDERED MAGNET - SMCO3.5CU1.5 [J].

UEHARA, M ;

BARBARA, B .

JOURNAL DE PHYSIQUE, 1986, 47 (02) :235-238

[15] QUANTUM EXPONENTIAL RELAXATION OF ANTIFERROMAGNETIC DOMAIN-WALLS IN FETBO3 SINGLE-CRYSTAL [J].

ZHANG, XX ;

TEJADA, J ;

ROIG, A ;

NIKOLOV, O ;

MOLINS, E .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1994, 137 (03) :L235-L238

[16] MAGNETIC-RELAXATION PHENOMENA IN CRO2 DIGITAL COMPACT CASSETTE MAGNETIC TAPES [J].

ZHANG, XX ;

TEJADA, J .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1994, 129 (2-3) :L109-L114

[17] MAGNETIC-RELAXATION AND QUANTUM TUNNELING IN NANOCRYSTALLINE PARTICLES [J].

ZHANG, XX ;

ZIOLO, R ;

KROLL, EC ;

BOHIGAS, X ;

TEJADA, J .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1995, 140 :1853-1854

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