Microstructure and magnetic properties of FePt thin films epitaxially grown on MgO (0 0 1) substrates

Y. K. Takahashi; K. Hono; T. Shima; K. Takanashi

doi:10.1016/S0304-8853(03)00377-9

Microstructure and magnetic properties of FePt thin films epitaxially grown on MgO (0 0 1) substrates

Y. K. Takahashi^*, K. Hono, T. Shima, K. Takanashi

^*この研究の対応する著者

研究成果: Article › 査読

79 被引用数 (Scopus)

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We have investigated the microstructures and the magnetic properties of 10nm thick FePt films epitaxially grown on MgO (0 0 1) substrates at various substrate temperatures, T_s. The long-range-order parameter of the L1₀ structure and the coercivity increased above T_s = 450°C with a drastic change in the film morphology from continuous structure to island-like one. A huge coercivity of 42kOe obtained at T _s = 700°C is attributed to complete magnetic isolation of nanometer-scale particles as well as perfect uniaxial alignment of c-axis in the normal direction to the film.

本文言語	English
ページ（範囲）	248-255
ページ数	8
ジャーナル	Journal of Magnetism and Magnetic Materials
巻	267
号	2
DOI	https://doi.org/10.1016/S0304-8853(03)00377-9
出版ステータス	Published - 2003 12月
外部発表	はい

ASJC Scopus subject areas

電子材料、光学材料、および磁性材料
凝縮系物理学

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10.1016/S0304-8853(03)00377-9

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title = "Microstructure and magnetic properties of FePt thin films epitaxially grown on MgO (0 0 1) substrates",

abstract = "We have investigated the microstructures and the magnetic properties of 10nm thick FePt films epitaxially grown on MgO (0 0 1) substrates at various substrate temperatures, Ts. The long-range-order parameter of the L10 structure and the coercivity increased above Ts = 450°C with a drastic change in the film morphology from continuous structure to island-like one. A huge coercivity of 42kOe obtained at T s = 700°C is attributed to complete magnetic isolation of nanometer-scale particles as well as perfect uniaxial alignment of c-axis in the normal direction to the film.",

keywords = "Coercivity, Epitaxial film, FePt, Microstructure",

author = "Takahashi, {Y. K.} and K. Hono and T. Shima and K. Takanashi",

note = "Funding Information: This work was supported by the Special Coordination Funds for Promoting Science and Technology on “Nanohetero Metallic Materials” from the Ministry of Education, Culture, Sports, Science and Technology. One of the authors (YKT) acknowledges Japan Science Promotion Society for a JSPS fellowship.",

year = "2003",

month = dec,

doi = "10.1016/S0304-8853(03)00377-9",

language = "English",

volume = "267",

pages = "248--255",

journal = "Journal of Magnetism and Magnetic Materials",

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TY - JOUR

T1 - Microstructure and magnetic properties of FePt thin films epitaxially grown on MgO (0 0 1) substrates

AU - Takahashi, Y. K.

AU - Hono, K.

AU - Shima, T.

AU - Takanashi, K.

N1 - Funding Information: This work was supported by the Special Coordination Funds for Promoting Science and Technology on “Nanohetero Metallic Materials” from the Ministry of Education, Culture, Sports, Science and Technology. One of the authors (YKT) acknowledges Japan Science Promotion Society for a JSPS fellowship.

PY - 2003/12

Y1 - 2003/12

N2 - We have investigated the microstructures and the magnetic properties of 10nm thick FePt films epitaxially grown on MgO (0 0 1) substrates at various substrate temperatures, Ts. The long-range-order parameter of the L10 structure and the coercivity increased above Ts = 450°C with a drastic change in the film morphology from continuous structure to island-like one. A huge coercivity of 42kOe obtained at T s = 700°C is attributed to complete magnetic isolation of nanometer-scale particles as well as perfect uniaxial alignment of c-axis in the normal direction to the film.

AB - We have investigated the microstructures and the magnetic properties of 10nm thick FePt films epitaxially grown on MgO (0 0 1) substrates at various substrate temperatures, Ts. The long-range-order parameter of the L10 structure and the coercivity increased above Ts = 450°C with a drastic change in the film morphology from continuous structure to island-like one. A huge coercivity of 42kOe obtained at T s = 700°C is attributed to complete magnetic isolation of nanometer-scale particles as well as perfect uniaxial alignment of c-axis in the normal direction to the film.

KW - Coercivity

KW - Epitaxial film

KW - FePt

KW - Microstructure

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U2 - 10.1016/S0304-8853(03)00377-9

DO - 10.1016/S0304-8853(03)00377-9

M3 - Article

AN - SCOPUS:0142153921

SN - 0304-8853

VL - 267

SP - 248

EP - 255

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 2

ER -

Microstructure and magnetic properties of FePt thin films epitaxially grown on MgO (0 0 1) substrates

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