Coercivity exceeding 100 kOe in epltaxially grown FePt sputtered films

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

doi:10.1063/1.1794863

Coercivity exceeding 100 kOe in epltaxially grown FePt sputtered films

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

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

221 Citations (Scopus)

Abstract

The magnetization process and microstructure of FePt (001) films with large perpendicular magnetic anisotropy were analyzed. The sample films were synthesized by co-sputtering Pt and Fe directly onto heated single crystalline MgO (001) substrates using a high vacuum multiple dc-sputtering system. The structural characteristics of the films were investigated using transmission electron microscopy and x-ray diffraction with Cu-Kα radiation. The results show that the value of uniaxial magnetic anisotropy is constant although the magnetic domain structure changes from single-to multidomain state, and thus show that magnetization process depends on the film morphology.

Original language	English
Pages (from-to)	2571-2573
Number of pages	3
Journal	Applied Physics Letters
Volume	85
Issue number	13
DOIs	https://doi.org/10.1063/1.1794863
Publication status	Published - 2004 Sept 27
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.1794863

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title = "Coercivity exceeding 100 kOe in epltaxially grown FePt sputtered films",

abstract = "The magnetization process and microstructure of FePt (001) films with large perpendicular magnetic anisotropy were analyzed. The sample films were synthesized by co-sputtering Pt and Fe directly onto heated single crystalline MgO (001) substrates using a high vacuum multiple dc-sputtering system. The structural characteristics of the films were investigated using transmission electron microscopy and x-ray diffraction with Cu-Kα radiation. The results show that the value of uniaxial magnetic anisotropy is constant although the magnetic domain structure changes from single-to multidomain state, and thus show that magnetization process depends on the film morphology.",

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

note = "Funding Information: This work was partly supported by “Nanohetero Metallic Materials” from the MEXT. The structural characterization was performed at Laboratory for Advanced Materials, IMR, Tohoku University. High field magnetic measurement was performed at CLTS, Tohoku University. The authors would like to acknowledge Dr. S. Sugimoto for fruitful discussion; Y. Murakami for technical assistance.",

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doi = "10.1063/1.1794863",

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T1 - Coercivity exceeding 100 kOe in epltaxially grown FePt sputtered films

AU - Shima, T.

AU - Takanashi, K.

AU - Takahashi, Y. K.

AU - Hono, K.

N1 - Funding Information: This work was partly supported by “Nanohetero Metallic Materials” from the MEXT. The structural characterization was performed at Laboratory for Advanced Materials, IMR, Tohoku University. High field magnetic measurement was performed at CLTS, Tohoku University. The authors would like to acknowledge Dr. S. Sugimoto for fruitful discussion; Y. Murakami for technical assistance.

PY - 2004/9/27

Y1 - 2004/9/27

N2 - The magnetization process and microstructure of FePt (001) films with large perpendicular magnetic anisotropy were analyzed. The sample films were synthesized by co-sputtering Pt and Fe directly onto heated single crystalline MgO (001) substrates using a high vacuum multiple dc-sputtering system. The structural characteristics of the films were investigated using transmission electron microscopy and x-ray diffraction with Cu-Kα radiation. The results show that the value of uniaxial magnetic anisotropy is constant although the magnetic domain structure changes from single-to multidomain state, and thus show that magnetization process depends on the film morphology.

AB - The magnetization process and microstructure of FePt (001) films with large perpendicular magnetic anisotropy were analyzed. The sample films were synthesized by co-sputtering Pt and Fe directly onto heated single crystalline MgO (001) substrates using a high vacuum multiple dc-sputtering system. The structural characteristics of the films were investigated using transmission electron microscopy and x-ray diffraction with Cu-Kα radiation. The results show that the value of uniaxial magnetic anisotropy is constant although the magnetic domain structure changes from single-to multidomain state, and thus show that magnetization process depends on the film morphology.

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Coercivity exceeding 100 kOe in epltaxially grown FePt sputtered films

Abstract

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