Critical phenomenon in soft magnetic properties of giant magnetostrictive materials: Computer simulation

被引：0

作者：

Fukunaga, Hirotoshi ^{[1
]}

Yamaguchi, Takayuki ^{[1
]}

机构：

[1] Graduate School of Science and Technology, Nagasaki University, Nagasaki 852, Japan

来源：

Journal of Applied Physics | 2006年 / 99卷 / 08期

关键词：

Dependence of magnetostrictive and magnetic properties on grain size was calculated numerically for an isotropic giant magnetostrictive material. The model magnet assumed is composed of 8000 cubic (Tb0.3 Dy0.7) Fe2 grains. The direction of magnetization and the magnetostriction of each grain was determined for a given applied field under the consideration of the anisotropy; exchange; magnetoelastic; elastic; and Zeeman energies. Subsequently; the hysteresis loop and the magnetostriction versus applied field curve was obtained by varying the applied field. With decreasing the grain size D; the coercivity Hc and dλdH; where λ is the magnetostriction; decreased abruptly at D=25 nm. This improvement in soft magnetic properties exceeded the expected improvement from Herzer's calculation; in which Hc was proportional to D6. In order to study the significant improvement in detail; we calculated magnetic and magnetostrictive properties with varying magnetostriction and anisotropy constants. Resultantly; it was clarified that the critical phenomenon occurs when the total of elastic and magnetoelastic energies exceed the magnetic anisotropy energy in magnitude. © 2006 American Institute of Physics;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Journal article (JA)

引用

共 50 条

[21] A New Technique for Modeling Hysteresis Phenomenon in Soft Magnetic Materials
Faiz, Jawad
Saffari, S.
ELECTROMAGNETICS, 2010, 30 (04) : 376 - 401
[22] A computational effective material data representation for fast simulation models of giant magnetostrictive materials
Sato, Y
Engdahl, G
IEEE TRANSACTIONS ON MAGNETICS, 2004, 40 (02) : 920 - 923
[23] Coarse grain models and the computer simulation of soft materials
Nielsen, SO
Lopez, CF
Srinivas, G
Klein, ML
JOURNAL OF PHYSICS-CONDENSED MATTER, 2004, 16 (15) : R481 - R512
[24] Computer Simulation of Mechanical Properties of Soft Particle
Li Ting
Li Jianfeng
Zhang Hongdong
Yang Yuliang
ACTA CHIMICA SINICA, 2011, 69 (04) : 466 - 470
[25] Test and Analysis of High Frequency Magnetic Energy Losses Characteristics for Giant Magnetostrictive Materials
Huang W.
Gao C.
Wang B.
Weng L.
Li Y.
Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery, 2019, 50 (02): : 420 - 426
[26] Computer simulation of the effect of an ultra soft phase on the magnetic properties of nanocrystalline permanent magnets
Griffiths, MK
Bishop, JEL
Tucker, JW
Davies, HA
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2001, 234 (02) : 331 - 352
[27] Simulation and Experimental Study of the Coupling Drive Magnetic Field for Embedded Giant Magnetostrictive Actuators
Wang, Bin
Wu, Yijie
Zhang, Lei
MACHINERY, MATERIALS SCIENCE AND ENGINEERING APPLICATIONS, 2012, 510 : 322 - 327
[28] Magnetic properties of rapidly quenched soft magnetic materials
Bertotti, G
Ferrara, E
Fiorillo, F
Tiberto, P
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1997, 226 : 603 - 613
[29] Structural inhomogeneity and magnetic properties of soft magnetic materials
Yu. N. Dragoshanskii
V. V. Gubernatorov
B. K. Sokolov
V. V. Ovchinnikov
Doklady Physics, 2002, 47 : 302 - 304
[30] Structural inhomogeneity and magnetic properties of soft magnetic materials
Dragoshanskii, YN
Gubernatorov, VV
Sokolov, BK
Ovchinnikov, VV
DOKLADY PHYSICS, 2002, 47 (04) : 302 - 304

← 1 2 3 4 5 →