Interface effects on perpendicular magnetic anisotropy for molecular-capped cobalt ultrathin films

Xianmin Zhang; Shigemi Mizukami; Takahide Kubota; Mikihiko Oogane; Hiroshi Naganuma; Yasuo Ando; Terunobu Miyazaki

doi:10.1063/1.3651766

Interface effects on perpendicular magnetic anisotropy for molecular-capped cobalt ultrathin films

Xianmin Zhang, Shigemi Mizukami, Takahide Kubota, Mikihiko Oogane, Hiroshi Naganuma, Yasuo Ando, Terunobu Miyazaki

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

15 Citations (Scopus)

Abstract

The perpendicular magnetic anisotropy (PMA) of cobalt (0.5-1.8 nm) films capped separately by pentacene (Pc), fullerene (C₆₀), and 8-hydroxyquinoline-aluminum (Alq₃) are investigated. For all three series, the thickness of Co is around 0.7 nm for maximum out-of-plane coercivity. It is found that the coercivity of C₆₀-capped films is nearly equal to that for Alq₃-capped samples, although both are smaller than for Pc-capped films. The different interface effects of Co/molecules are discussed to explain this observation. This work highlights the PMA of ferromagnetic metal, which can be markedly infected depending on the nature of organic molecule.

Original language	English
Article number	162509
Journal	Applied Physics Letters
Volume	99
Issue number	16
DOIs	https://doi.org/10.1063/1.3651766
Publication status	Published - 2011 Oct 17

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Interface effects on perpendicular magnetic anisotropy for molecular-capped cobalt ultrathin films",

abstract = "The perpendicular magnetic anisotropy (PMA) of cobalt (0.5-1.8 nm) films capped separately by pentacene (Pc), fullerene (C60), and 8-hydroxyquinoline-aluminum (Alq3) are investigated. For all three series, the thickness of Co is around 0.7 nm for maximum out-of-plane coercivity. It is found that the coercivity of C60-capped films is nearly equal to that for Alq3-capped samples, although both are smaller than for Pc-capped films. The different interface effects of Co/molecules are discussed to explain this observation. This work highlights the PMA of ferromagnetic metal, which can be markedly infected depending on the nature of organic molecule.",

author = "Xianmin Zhang and Shigemi Mizukami and Takahide Kubota and Mikihiko Oogane and Hiroshi Naganuma and Yasuo Ando and Terunobu Miyazaki",

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T1 - Interface effects on perpendicular magnetic anisotropy for molecular-capped cobalt ultrathin films

AU - Zhang, Xianmin

AU - Mizukami, Shigemi

AU - Kubota, Takahide

AU - Oogane, Mikihiko

AU - Naganuma, Hiroshi

AU - Ando, Yasuo

AU - Miyazaki, Terunobu

N1 - Funding Information: This work was partially supported by Grant-in-Aid for Scientific Research from JSPS.

PY - 2011/10/17

Y1 - 2011/10/17

N2 - The perpendicular magnetic anisotropy (PMA) of cobalt (0.5-1.8 nm) films capped separately by pentacene (Pc), fullerene (C60), and 8-hydroxyquinoline-aluminum (Alq3) are investigated. For all three series, the thickness of Co is around 0.7 nm for maximum out-of-plane coercivity. It is found that the coercivity of C60-capped films is nearly equal to that for Alq3-capped samples, although both are smaller than for Pc-capped films. The different interface effects of Co/molecules are discussed to explain this observation. This work highlights the PMA of ferromagnetic metal, which can be markedly infected depending on the nature of organic molecule.

AB - The perpendicular magnetic anisotropy (PMA) of cobalt (0.5-1.8 nm) films capped separately by pentacene (Pc), fullerene (C60), and 8-hydroxyquinoline-aluminum (Alq3) are investigated. For all three series, the thickness of Co is around 0.7 nm for maximum out-of-plane coercivity. It is found that the coercivity of C60-capped films is nearly equal to that for Alq3-capped samples, although both are smaller than for Pc-capped films. The different interface effects of Co/molecules are discussed to explain this observation. This work highlights the PMA of ferromagnetic metal, which can be markedly infected depending on the nature of organic molecule.

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Interface effects on perpendicular magnetic anisotropy for molecular-capped cobalt ultrathin films

Abstract

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