Large coercivity and granular structure of CoPt/SiO2 films

Chen Chen; Osamu Kitakami; Satoshi Okanioto; Yutaka Shimada; Kichiro Shibata; Michiyoshi Tanaka

doi:10.1109/20.800559

Large coercivity and granular structure of CoPt/SiO₂ films

Chen Chen, Osamu Kitakami, Satoshi Okanioto, Yutaka Shimada, Kichiro Shibata, Michiyoshi Tanaka

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

35 Citations (Scopus)

Abstract

By post-annealing the as-prepared CoPt/SiO3 samples with the atomic ratio of Co : Pt = 47.5 : 52.5, high coercivity H, ≈14 kOe was obtained at room temperature. TEM and XRD revealed the ordered fct (L1_n) structure with the lattice constant ratio cO.97 in the granular films with the average grain size around 10-20 nm. The grain size and packing density effect on coercivity are also discussed,.

Original language	English
Pages (from-to)	3466-3468
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	35
Issue number	5 PART 2
DOIs	https://doi.org/10.1109/20.800559
Publication status	Published - 1999
Externally published	Yes

Keywords

CoPt granular film
Coercivity, ordering
L10 phase

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

Access to Document

10.1109/20.800559

Cite this

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title = "Large coercivity and granular structure of CoPt/SiO2 films",

abstract = "By post-annealing the as-prepared CoPt/SiO3 samples with the atomic ratio of Co : Pt = 47.5 : 52.5, high coercivity H, ≈14 kOe was obtained at room temperature. TEM and XRD revealed the ordered fct (L1n) structure with the lattice constant ratio cO.97 in the granular films with the average grain size around 10-20 nm. The grain size and packing density effect on coercivity are also discussed,.",

keywords = "CoPt granular film, Coercivity, ordering, L10 phase",

author = "Chen Chen and Osamu Kitakami and Satoshi Okanioto and Yutaka Shimada and Kichiro Shibata and Michiyoshi Tanaka",

note = "Funding Information: Manuscripl rcccived March 1, 1999 Ctien Chen, tel.: 1-81-22-217-5357, fax: +Rl-22-217-5404, e-mail: chcn- c@risni.tohoku.acjp This work is supporlcd hy the Research for lhc Future Program of Japan Socicly for the Proornotion of Science under Gran1 No. 97R14701, and Storage Rescarch Consortium in Japan",

year = "1999",

doi = "10.1109/20.800559",

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volume = "35",

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journal = "IEEE Transactions on Magnetics",

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publisher = "Institute of Electrical and Electronics Engineers Inc.",

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T1 - Large coercivity and granular structure of CoPt/SiO2 films

AU - Chen, Chen

AU - Kitakami, Osamu

AU - Okanioto, Satoshi

AU - Shimada, Yutaka

AU - Shibata, Kichiro

AU - Tanaka, Michiyoshi

N1 - Funding Information: Manuscripl rcccived March 1, 1999 Ctien Chen, tel.: 1-81-22-217-5357, fax: +Rl-22-217-5404, e-mail: chcn- c@risni.tohoku.acjp This work is supporlcd hy the Research for lhc Future Program of Japan Socicly for the Proornotion of Science under Gran1 No. 97R14701, and Storage Rescarch Consortium in Japan

PY - 1999

Y1 - 1999

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KW - CoPt granular film

KW - Coercivity, ordering

KW - L10 phase

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