Size effects on exchange bias in polycrystalline Ni-Fe/Fe-Mn square dots

Isao Sasaki; Ryoichi Nakatani; Kazufumi Ishimoto; Yasushi Endo; Yu Shiratsuchi; Yoshio Kawamura; Masahiko Yamamoto

doi:10.1016/j.jmmm.2006.10.984

Size effects on exchange bias in polycrystalline Ni-Fe/Fe-Mn square dots

Isao Sasaki, Ryoichi Nakatani, Kazufumi Ishimoto, Yasushi Endo, Yu Shiratsuchi, Yoshio Kawamura, Masahiko Yamamoto

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

5 Citations (Scopus)

Abstract

The effects of the dot size on the exchange bias in the Ni-Fe/Fe-Mn square dots have been investigated. The exchange bias field and the blocking temperature of the square dots decrease as the dot size decreases. We consider this behavior is because the spins are fluctuated by the thermal activation in the laterally constricted antiferromagnetic grains which are located at the edges of the dots.

Original language	English
Pages (from-to)	2677-2679
Number of pages	3
Journal	Journal of Magnetism and Magnetic Materials
Volume	310
Issue number	2 SUPPL. PART 3
DOIs	https://doi.org/10.1016/j.jmmm.2006.10.984
Publication status	Published - 2007 Mar
Externally published	Yes

Keywords

Antiferromagnetic layer
Exchange bias
MRAM
Nanostructure
Thermal fluctuation

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1016/j.jmmm.2006.10.984

Cite this

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title = "Size effects on exchange bias in polycrystalline Ni-Fe/Fe-Mn square dots",

abstract = "The effects of the dot size on the exchange bias in the Ni-Fe/Fe-Mn square dots have been investigated. The exchange bias field and the blocking temperature of the square dots decrease as the dot size decreases. We consider this behavior is because the spins are fluctuated by the thermal activation in the laterally constricted antiferromagnetic grains which are located at the edges of the dots.",

keywords = "Antiferromagnetic layer, Exchange bias, MRAM, Nanostructure, Thermal fluctuation",

author = "Isao Sasaki and Ryoichi Nakatani and Kazufumi Ishimoto and Yasushi Endo and Yu Shiratsuchi and Yoshio Kawamura and Masahiko Yamamoto",

note = "Funding Information: This work was supported by a Grant-in-Aid for General Scientific Research (S), Exploratory Research, and Priority Assistance of the Formation of Worldwide Renowned Centers of Research. The 21st Century COE Program (Project: Center of Excellence for Advances Structural and Functional Materials Design) from the Japanese Ministry of Education, Sports, Culture, Science, and Technology.",

year = "2007",

month = mar,

doi = "10.1016/j.jmmm.2006.10.984",

language = "English",

volume = "310",

pages = "2677--2679",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier",

number = "2 SUPPL. PART 3",

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TY - JOUR

T1 - Size effects on exchange bias in polycrystalline Ni-Fe/Fe-Mn square dots

AU - Sasaki, Isao

AU - Nakatani, Ryoichi

AU - Ishimoto, Kazufumi

AU - Endo, Yasushi

AU - Shiratsuchi, Yu

AU - Kawamura, Yoshio

AU - Yamamoto, Masahiko

N1 - Funding Information: This work was supported by a Grant-in-Aid for General Scientific Research (S), Exploratory Research, and Priority Assistance of the Formation of Worldwide Renowned Centers of Research. The 21st Century COE Program (Project: Center of Excellence for Advances Structural and Functional Materials Design) from the Japanese Ministry of Education, Sports, Culture, Science, and Technology.

PY - 2007/3

Y1 - 2007/3

N2 - The effects of the dot size on the exchange bias in the Ni-Fe/Fe-Mn square dots have been investigated. The exchange bias field and the blocking temperature of the square dots decrease as the dot size decreases. We consider this behavior is because the spins are fluctuated by the thermal activation in the laterally constricted antiferromagnetic grains which are located at the edges of the dots.

AB - The effects of the dot size on the exchange bias in the Ni-Fe/Fe-Mn square dots have been investigated. The exchange bias field and the blocking temperature of the square dots decrease as the dot size decreases. We consider this behavior is because the spins are fluctuated by the thermal activation in the laterally constricted antiferromagnetic grains which are located at the edges of the dots.

KW - Antiferromagnetic layer

KW - Exchange bias

KW - MRAM

KW - Nanostructure

KW - Thermal fluctuation

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U2 - 10.1016/j.jmmm.2006.10.984

DO - 10.1016/j.jmmm.2006.10.984

M3 - Article

AN - SCOPUS:33847661446

VL - 310

SP - 2677

EP - 2679

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

SN - 0304-8853

IS - 2 SUPPL. PART 3

ER -

Size effects on exchange bias in polycrystalline Ni-Fe/Fe-Mn square dots

Abstract

Keywords

ASJC Scopus subject areas

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