Exchange anisotropy of L12-Mn3X (X = Ir, Rh, Ru)/Co-Fe bilayers

Masakiyo Tsunoda; Mamiko Naka; Ken Ichi Imakita; Shin Ichiro Yoshitaki; Migaku Takahashi

doi:10.1109/TMAG.2006.879153

Exchange anisotropy of L1₂-Mn₃X (X = Ir, Rh, Ru)/Co-Fe bilayers

Masakiyo Tsunoda, Mamiko Naka, Ken Ichi Imakita, Shin Ichiro Yoshitaki, Migaku Takahashi

工学研究科・電子工学専攻

研究成果: Article › 査読

抄録

The L1₂ -phase formation and resultant exchange anisotropy were examined in Mn-Rh/Co-Fe and Mn-Ru/Co-Fe bilayers, varying the substrate temperature, T_sub, during the deposition of Mn-Rh or Mn-Ru layer. The superlattice diffractions from the Mn₃Rh were detected. The unidirectional anisotropy constant, J_K, was enhanced more than double with increasing T_sub from room temperature to 130°C ∼ 170°C, similarly to Mn-Ir/Co-Fe bilayers. The maximum J_K value obtained was 0.77 erg/cm² for the Mn-Rh/Co-Fe bilayer and 0.56 erg/cm² for the Mn-Ru/Co-Fe bilayer. The blocking temperature, T _B, was increased about 80°C to 100°C, in accordance with enhancing J_K. Variations of J_K and T_B as a function of antiferromagnetic layer thickness, d_AF, were also studied. The critical thickness of d_AF was less than 5 nm for both the bilayers.

本文言語	English
ページ（範囲）	2999-3001
ページ数	3
ジャーナル	IEEE Transactions on Magnetics
巻	42
号	10
DOI	https://doi.org/10.1109/TMAG.2006.879153
出版ステータス	Published - 2006 10 1

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

文献へのアクセス

10.1109/TMAG.2006.879153

フィンガープリント「Exchange anisotropy of L1<sub>2</sub>-Mn<sub>3</sub>X (X = Ir, Rh, Ru)/Co-Fe bilayers」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル

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title = "Exchange anisotropy of L12-Mn3X (X = Ir, Rh, Ru)/Co-Fe bilayers",

abstract = "The L12 -phase formation and resultant exchange anisotropy were examined in Mn-Rh/Co-Fe and Mn-Ru/Co-Fe bilayers, varying the substrate temperature, Tsub, during the deposition of Mn-Rh or Mn-Ru layer. The superlattice diffractions from the Mn3Rh were detected. The unidirectional anisotropy constant, JK, was enhanced more than double with increasing Tsub from room temperature to 130°C ∼ 170°C, similarly to Mn-Ir/Co-Fe bilayers. The maximum JK value obtained was 0.77 erg/cm2 for the Mn-Rh/Co-Fe bilayer and 0.56 erg/cm2 for the Mn-Ru/Co-Fe bilayer. The blocking temperature, T B, was increased about 80°C to 100°C, in accordance with enhancing JK. Variations of JK and TB as a function of antiferromagnetic layer thickness, dAF, were also studied. The critical thickness of dAF was less than 5 nm for both the bilayers.",

keywords = "Antiferromagnet, Blocking temperature, Exchange anisotropy, L1 -phase, Mn alloys",

author = "Masakiyo Tsunoda and Mamiko Naka and Imakita, {Ken Ichi} and Yoshitaki, {Shin Ichiro} and Migaku Takahashi",

year = "2006",

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doi = "10.1109/TMAG.2006.879153",

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T1 - Exchange anisotropy of L12-Mn3X (X = Ir, Rh, Ru)/Co-Fe bilayers

AU - Tsunoda, Masakiyo

AU - Naka, Mamiko

AU - Imakita, Ken Ichi

AU - Yoshitaki, Shin Ichiro

AU - Takahashi, Migaku

PY - 2006/10/1

Y1 - 2006/10/1

N2 - The L12 -phase formation and resultant exchange anisotropy were examined in Mn-Rh/Co-Fe and Mn-Ru/Co-Fe bilayers, varying the substrate temperature, Tsub, during the deposition of Mn-Rh or Mn-Ru layer. The superlattice diffractions from the Mn3Rh were detected. The unidirectional anisotropy constant, JK, was enhanced more than double with increasing Tsub from room temperature to 130°C ∼ 170°C, similarly to Mn-Ir/Co-Fe bilayers. The maximum JK value obtained was 0.77 erg/cm2 for the Mn-Rh/Co-Fe bilayer and 0.56 erg/cm2 for the Mn-Ru/Co-Fe bilayer. The blocking temperature, T B, was increased about 80°C to 100°C, in accordance with enhancing JK. Variations of JK and TB as a function of antiferromagnetic layer thickness, dAF, were also studied. The critical thickness of dAF was less than 5 nm for both the bilayers.

AB - The L12 -phase formation and resultant exchange anisotropy were examined in Mn-Rh/Co-Fe and Mn-Ru/Co-Fe bilayers, varying the substrate temperature, Tsub, during the deposition of Mn-Rh or Mn-Ru layer. The superlattice diffractions from the Mn3Rh were detected. The unidirectional anisotropy constant, JK, was enhanced more than double with increasing Tsub from room temperature to 130°C ∼ 170°C, similarly to Mn-Ir/Co-Fe bilayers. The maximum JK value obtained was 0.77 erg/cm2 for the Mn-Rh/Co-Fe bilayer and 0.56 erg/cm2 for the Mn-Ru/Co-Fe bilayer. The blocking temperature, T B, was increased about 80°C to 100°C, in accordance with enhancing JK. Variations of JK and TB as a function of antiferromagnetic layer thickness, dAF, were also studied. The critical thickness of dAF was less than 5 nm for both the bilayers.

KW - Antiferromagnet

KW - Blocking temperature

KW - Exchange anisotropy

KW - L1 -phase

KW - Mn alloys

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