Spin-glasslike behavior of magnetic ordered state originating from strong interparticle magnetostatic interaction in α-Fe nanoparticle agglomerate

Kosuke Hiroi; Hiroaki Kura; Tomoyuki Ogawa; Migaku Takahashi; Tetsuya Sato

doi:10.1063/1.3602313

Spin-glasslike behavior of magnetic ordered state originating from strong interparticle magnetostatic interaction in α-Fe nanoparticle agglomerate

Kosuke Hiroi, Hiroaki Kura, Tomoyuki Ogawa, Migaku Takahashi, Tetsuya Sato

物理情報工学科

研究成果: Article › 査読

23 被引用数 (Scopus)

抄録

In strongly interacting nanoparticle agglomerate through dipolar coupling, prepared using chemically synthesized α-Fe nanoparticle, the temperature Tpeak at which the zero-field-cooled magnetization exhibits its peak reaches 385 K. This indicates that the magnetic ordering appears above room temperature. Aging phenomena and memory effect observed below Tpeak are intrinsically same as that of spin glasses. The appearance of spin-glasslike behavior near room temperature should be attributed to the three-dimensional interparticle coupling that is purely magnetostatic.

本文言語	English
論文番号	252505
ジャーナル	Applied Physics Letters
巻	98
号	25
DOI	https://doi.org/10.1063/1.3602313
出版ステータス	Published - 2011 6月 20

ASJC Scopus subject areas

物理学および天文学（その他）

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10.1063/1.3602313

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引用スタイル

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author = "Kosuke Hiroi and Hiroaki Kura and Tomoyuki Ogawa and Migaku Takahashi and Tetsuya Sato",

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AU - Takahashi, Migaku

AU - Sato, Tetsuya

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