Magnetic Anisotropy Energy of L10 CoPt-B Thin Films Elongated c-axis

Hiroshi Yamaguchi; Osamu Kitakami; Satoshi Okamoto; Yutaka Shimada; Katsunari Oikawa; Kazuaki Fukamichi; Te Hsuan Chiang

doi:10.2320/matertrans.44.1514

Magnetic Anisotropy Energy of L1₀ CoPt-B Thin Films Elongated c-axis

Hiroshi Yamaguchi, Osamu Kitakami, Satoshi Okamoto, Yutaka Shimada, Katsunari Oikawa, Kazuaki Fukamichi, Te Hsuan Chiang

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

4 Citations (Scopus)

Abstract

Very small amount of B promotes the disorder/order transformation of L1₀ CoPt at low annealing temperature along with excellent c-axis orientation. The c-axis is slightly expanded by B atoms interstitially incorporated into the octahedral sites in the L1₀ CoPt lattice. Magnetic measurements using Hall magnetometry have revealed that the magnetic anisotropy energy (MAE) is enhanced by elongation of the c-axis. This result is in harmony with the first principles calculation which predicts that the c-axis elongation enhances the MAE of L1₀ CoPt due to the d band splitting of Co near the Fermi level in the minority spin state.

Original language	English
Pages (from-to)	1514-1517
Number of pages	4
Journal	Materials Transactions
Volume	44
Issue number	8
DOIs	https://doi.org/10.2320/matertrans.44.1514
Publication status	Published - 2003 Aug

Keywords

Boron
Cobalt platinum
Disorder-order transformation
L1
Magnetic anisotropy

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10.2320/matertrans.44.1514

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abstract = "Very small amount of B promotes the disorder/order transformation of L10 CoPt at low annealing temperature along with excellent c-axis orientation. The c-axis is slightly expanded by B atoms interstitially incorporated into the octahedral sites in the L10 CoPt lattice. Magnetic measurements using Hall magnetometry have revealed that the magnetic anisotropy energy (MAE) is enhanced by elongation of the c-axis. This result is in harmony with the first principles calculation which predicts that the c-axis elongation enhances the MAE of L10 CoPt due to the d band splitting of Co near the Fermi level in the minority spin state.",

keywords = "Boron, Cobalt platinum, Disorder-order transformation, L1, Magnetic anisotropy",

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T1 - Magnetic Anisotropy Energy of L10 CoPt-B Thin Films Elongated c-axis

AU - Yamaguchi, Hiroshi

AU - Kitakami, Osamu

AU - Okamoto, Satoshi

AU - Shimada, Yutaka

AU - Oikawa, Katsunari

AU - Fukamichi, Kazuaki

AU - Chiang, Te Hsuan

PY - 2003/8

Y1 - 2003/8

N2 - Very small amount of B promotes the disorder/order transformation of L10 CoPt at low annealing temperature along with excellent c-axis orientation. The c-axis is slightly expanded by B atoms interstitially incorporated into the octahedral sites in the L10 CoPt lattice. Magnetic measurements using Hall magnetometry have revealed that the magnetic anisotropy energy (MAE) is enhanced by elongation of the c-axis. This result is in harmony with the first principles calculation which predicts that the c-axis elongation enhances the MAE of L10 CoPt due to the d band splitting of Co near the Fermi level in the minority spin state.

AB - Very small amount of B promotes the disorder/order transformation of L10 CoPt at low annealing temperature along with excellent c-axis orientation. The c-axis is slightly expanded by B atoms interstitially incorporated into the octahedral sites in the L10 CoPt lattice. Magnetic measurements using Hall magnetometry have revealed that the magnetic anisotropy energy (MAE) is enhanced by elongation of the c-axis. This result is in harmony with the first principles calculation which predicts that the c-axis elongation enhances the MAE of L10 CoPt due to the d band splitting of Co near the Fermi level in the minority spin state.

KW - Boron

KW - Cobalt platinum

KW - Disorder-order transformation

KW - L1

KW - Magnetic anisotropy

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JO - Materials Transactions

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Magnetic Anisotropy Energy of L1₀ CoPt-B Thin Films Elongated c-axis

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