Low-temperature fabrication of high-coercivity L10 ordered FePt magnetic thin films by sputtering

Y. K. Takahashi; M. Ohnuma; K. Hono

doi:10.1143/jjap.40.l1367

Low-temperature fabrication of high-coercivity L1₀ ordered FePt magnetic thin films by sputtering

Y. K. Takahashi^*, M. Ohnuma, K. Hono

^*Corresponding author for this work

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

47 Citations (Scopus)

Abstract

We report that fully ordered L1₀ FePt magnetic thin films with high coercivity can be fabricated by a simple sputtering method at a substrate temperature of 300°C. Although fcc → L1₀ ordering proceeds only above 600°C in ex situ annealing of disordered FePt films, the ordering occurs spontaneously by surface diffusion during the sputtering process of FePt alloy upon heating the substrate at 300°C. High coercivity larger than 7 kOe was achieved from the as-sputtered state.

Original language	English
Pages (from-to)	L1367-L1369
Journal	Japanese Journal of Applied Physics, Part 2: Letters
Volume	40
Issue number	12 B
DOIs	https://doi.org/10.1143/jjap.40.l1367
Publication status	Published - 2001 Dec 15
Externally published	Yes

Keywords

Coercivity
FePt
L1
Ordering temperature
Surface diffusion

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

Access to Document

10.1143/jjap.40.l1367

Cite this

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abstract = "We report that fully ordered L10 FePt magnetic thin films with high coercivity can be fabricated by a simple sputtering method at a substrate temperature of 300°C. Although fcc → L10 ordering proceeds only above 600°C in ex situ annealing of disordered FePt films, the ordering occurs spontaneously by surface diffusion during the sputtering process of FePt alloy upon heating the substrate at 300°C. High coercivity larger than 7 kOe was achieved from the as-sputtered state.",

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AU - Hono, K.

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N2 - We report that fully ordered L10 FePt magnetic thin films with high coercivity can be fabricated by a simple sputtering method at a substrate temperature of 300°C. Although fcc → L10 ordering proceeds only above 600°C in ex situ annealing of disordered FePt films, the ordering occurs spontaneously by surface diffusion during the sputtering process of FePt alloy upon heating the substrate at 300°C. High coercivity larger than 7 kOe was achieved from the as-sputtered state.

AB - We report that fully ordered L10 FePt magnetic thin films with high coercivity can be fabricated by a simple sputtering method at a substrate temperature of 300°C. Although fcc → L10 ordering proceeds only above 600°C in ex situ annealing of disordered FePt films, the ordering occurs spontaneously by surface diffusion during the sputtering process of FePt alloy upon heating the substrate at 300°C. High coercivity larger than 7 kOe was achieved from the as-sputtered state.

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KW - L1

KW - Ordering temperature

KW - Surface diffusion

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