Monte Carlo simulation for magnetic dynamic processes of micromagnetic clusters with local disorder

Katsuhiko Yamaguchi; Shinya Tanaka; Osamu Nittono; Koji Yamada; Toshiyuki Takagi

doi:10.1016/j.physb.2005.10.060

Monte Carlo simulation for magnetic dynamic processes of micromagnetic clusters with local disorder

Katsuhiko Yamaguchi, Shinya Tanaka, Osamu Nittono, Koji Yamada, Toshiyuki Takagi

Innovative Energy Research Center

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

Magnetic dynamic processes for micromagnetic clusters with local disorder of crystal structure were simulated by pseudo-non-equilibrial Monte Carlo method. The magnetic field dependence of magnetization showed a little dip at zero magnetic fields. The dip becomes larger as the number of dislocations increase. Simulated Barkhausen noise at the dip was stronger than ordinal-simulated Barkhausen noise around coercivity. The snapshot of spins shows a magnetic fluctuation around dislocations. The result suggests a possibility of a new measurement with high sensitivity, to detect the deformation of micromagnetic clusters.

Original language	English
Pages (from-to)	251-255
Number of pages	5
Journal	Physica B: Condensed Matter
Volume	372
Issue number	1-2
DOIs	https://doi.org/10.1016/j.physb.2005.10.060
Publication status	Published - 2006 Feb 1

Keywords

Barkhausen noise
Magnetic fluctuation
Magnetic hysteresis
Micromagnetic clusters

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1016/j.physb.2005.10.060

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abstract = "Magnetic dynamic processes for micromagnetic clusters with local disorder of crystal structure were simulated by pseudo-non-equilibrial Monte Carlo method. The magnetic field dependence of magnetization showed a little dip at zero magnetic fields. The dip becomes larger as the number of dislocations increase. Simulated Barkhausen noise at the dip was stronger than ordinal-simulated Barkhausen noise around coercivity. The snapshot of spins shows a magnetic fluctuation around dislocations. The result suggests a possibility of a new measurement with high sensitivity, to detect the deformation of micromagnetic clusters.",

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author = "Katsuhiko Yamaguchi and Shinya Tanaka and Osamu Nittono and Koji Yamada and Toshiyuki Takagi",

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T1 - Monte Carlo simulation for magnetic dynamic processes of micromagnetic clusters with local disorder

AU - Yamaguchi, Katsuhiko

AU - Tanaka, Shinya

AU - Nittono, Osamu

AU - Yamada, Koji

AU - Takagi, Toshiyuki

PY - 2006/2/1

Y1 - 2006/2/1

N2 - Magnetic dynamic processes for micromagnetic clusters with local disorder of crystal structure were simulated by pseudo-non-equilibrial Monte Carlo method. The magnetic field dependence of magnetization showed a little dip at zero magnetic fields. The dip becomes larger as the number of dislocations increase. Simulated Barkhausen noise at the dip was stronger than ordinal-simulated Barkhausen noise around coercivity. The snapshot of spins shows a magnetic fluctuation around dislocations. The result suggests a possibility of a new measurement with high sensitivity, to detect the deformation of micromagnetic clusters.

AB - Magnetic dynamic processes for micromagnetic clusters with local disorder of crystal structure were simulated by pseudo-non-equilibrial Monte Carlo method. The magnetic field dependence of magnetization showed a little dip at zero magnetic fields. The dip becomes larger as the number of dislocations increase. Simulated Barkhausen noise at the dip was stronger than ordinal-simulated Barkhausen noise around coercivity. The snapshot of spins shows a magnetic fluctuation around dislocations. The result suggests a possibility of a new measurement with high sensitivity, to detect the deformation of micromagnetic clusters.

KW - Barkhausen noise

KW - Magnetic fluctuation

KW - Magnetic hysteresis

KW - Micromagnetic clusters

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Monte Carlo simulation for magnetic dynamic processes of micromagnetic clusters with local disorder

Abstract

Keywords

ASJC Scopus subject areas

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