Thermal Activation in Permanent Magnets

被引：28

作者：

Bance, S. ^{[1
]}

Fischbacher, J. ^{[1
]}

Kovacs, A. ^{[1
]}

Oezelt, H. ^{[1
]}

Reichel, F. ^{[1
]}

Schrefl, T. ^{[1
,2
]}

机构：

[1] St Polten Univ Appl Sci, Dept Technol, A-3100 St Polten, Austria

[2] Danube Univ Krems, Ctr Integrated Sensor Syst, A-2700 Wiener Neustadt, Austria

来源：

JOM | 2015年 / 67卷 / 06期

关键词：

MAGNETIZATION PROCESSES; COERCIVITY; DEPENDENCE; NUCLEATION; ANISOTROPY; MECHANISM; FIELD;

D O I：

10.1007/s11837-015-1415-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The coercive field of permanent magnets decays with temperature. At non-zero temperatures, the system can overcome a finite energy barrier through thermal fluctuations. Using finite element micromagnetic simulations, we quantify this effect, which reduces coercivity in addition to the decrease of the coercive field associated with the temperature dependence of the anisotropy field, and validate the method through comparison with existing experimental data.

引用

页码：1350 / 1356

页数：7

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