Negative remanent magnetization in a single domain particle with two uniaxial anisotropies

Yoon Jae Nam; S. H. Lim

doi:10.1063/1.3633107

Negative remanent magnetization in a single domain particle with two uniaxial anisotropies

Yoon Jae Nam, S. H. Lim

Department of Materials Science and Engineering

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

11 Citations (Scopus)

Abstract

The unusual behavior of negative remanent magnetization (NRM) that is observed in a simple homogeneous system consisting of two uniaxial anisotropies is explained quantitatively using an energy equation derived under the single domain assumption. The relative strength and alignment of the two uniaxial anisotropies and the direction of the applied magnetic field with respect to these anisotropies are identified as the three important factors for NRM. The window showing NRM is wider at larger angles between the two anisotropies and a maximum in NRM occurs near the boundary between NRM and ordinary positive remanent magnetization.

Original language	English
Article number	092503
Journal	Applied Physics Letters
Volume	99
Issue number	9
DOIs	https://doi.org/10.1063/1.3633107
Publication status	Published - 2011 Aug 29

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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abstract = "The unusual behavior of negative remanent magnetization (NRM) that is observed in a simple homogeneous system consisting of two uniaxial anisotropies is explained quantitatively using an energy equation derived under the single domain assumption. The relative strength and alignment of the two uniaxial anisotropies and the direction of the applied magnetic field with respect to these anisotropies are identified as the three important factors for NRM. The window showing NRM is wider at larger angles between the two anisotropies and a maximum in NRM occurs near the boundary between NRM and ordinary positive remanent magnetization.",

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note = "Funding Information: This work was supported by the Korea Research Council of Fundamental Science and Technology (KRCF) through the Degree and Research Center (DRC) program and also by Hynix Semiconductor through the Hynix Semiconductor—Korea University Nano-Semiconductor Program (Project No. P0901191).",

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AB - The unusual behavior of negative remanent magnetization (NRM) that is observed in a simple homogeneous system consisting of two uniaxial anisotropies is explained quantitatively using an energy equation derived under the single domain assumption. The relative strength and alignment of the two uniaxial anisotropies and the direction of the applied magnetic field with respect to these anisotropies are identified as the three important factors for NRM. The window showing NRM is wider at larger angles between the two anisotropies and a maximum in NRM occurs near the boundary between NRM and ordinary positive remanent magnetization.

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Negative remanent magnetization in a single domain particle with two uniaxial anisotropies

Abstract

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