An ac field probe for the magnetic ordering of magnets with random anisotropy

被引：5

作者：

Nguyen, Ha M. ^{[1
]}

Hsiao, Pai-Yi ^{[1
]}

机构：

[1] Natl Tsing Hua Univ, Dept Engn & Syst Sci, Hsinchu 30013, Taiwan

来源：

APPLIED PHYSICS LETTERS | 2009年 / 95卷 / 22期

关键词：

long-range order; magnetic anisotropy; magnetic susceptibility; magnetic transitions; Monte Carlo methods; thermodynamics; SPIN-GLASS; BEHAVIOR; MODEL; SUSCEPTIBILITY; PHASE;

D O I：

10.1063/1.3268473

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A Monte Carlo simulation is carried out to investigate the magnetic ordering in magnets with random anisotropy (RA). Our results show peculiar similarities to recent experiments that the real part of ac susceptibility presents two peaks for weak RA and only one for strong RA regardless of glassy critical dynamics manifested for them. We demonstrate that the thermodynamic nature of the low-temperature peak is a ferromagneticlike dynamic phase transition to quasilong range order (QLRO) for the former. Our simulation, therefore, is able to be incorporated with the experiments to help clarify the existence of the QLRO theoretically predicted so far.

引用

页数：3