Effect of Cu on the structure and magnetic properties of FePt sputtered film

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

doi:10.1016/S0304-8853(02)00065-3

Effect of Cu on the structure and magnetic properties of FePt sputtered film

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

^*Corresponding author for this work

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

12 Citations (Scopus)

Abstract

We have investigated the effect of Cu addition to the FePt alloy on the ordering kinetics and the coercivities of sputter deposited thin films. By alloying 4at% Cu, the temperature that A1 phase orders to the L1₀ structure decrease from 500°C to 400°C. The lattice parameters of the L1₀-ordered phase suggest that Fe atoms are substituted by Cu. The grain size increases by the addition of Cu, suggesting that the decrease of the annealing temperature for ordering is due to the enhanced kinetics of ordering as a result of higher diffusivity obtained from the alloy with the lower melting temperature.

Original language	English
Pages (from-to)	259-265
Number of pages	7
Journal	Journal of Magnetism and Magnetic Materials
Volume	246
Issue number	1-2
DOIs	https://doi.org/10.1016/S0304-8853(02)00065-3
Publication status	Published - 2002 Apr
Externally published	Yes

Keywords

Coercivity
Microstructure
Ordering
Sputtering
Thin film

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1016/S0304-8853(02)00065-3

Cite this

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title = "Effect of Cu on the structure and magnetic properties of FePt sputtered film",

abstract = "We have investigated the effect of Cu addition to the FePt alloy on the ordering kinetics and the coercivities of sputter deposited thin films. By alloying 4at% Cu, the temperature that A1 phase orders to the L10 structure decrease from 500°C to 400°C. The lattice parameters of the L10-ordered phase suggest that Fe atoms are substituted by Cu. The grain size increases by the addition of Cu, suggesting that the decrease of the annealing temperature for ordering is due to the enhanced kinetics of ordering as a result of higher diffusivity obtained from the alloy with the lower melting temperature.",

keywords = "Coercivity, Microstructure, Ordering, Sputtering, Thin film",

author = "Takahashi, {Y. K.} and M. Ohnuma and K. Hono",

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language = "English",

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TY - JOUR

T1 - Effect of Cu on the structure and magnetic properties of FePt sputtered film

AU - Takahashi, Y. K.

AU - Ohnuma, M.

AU - Hono, K.

PY - 2002/4

Y1 - 2002/4

N2 - We have investigated the effect of Cu addition to the FePt alloy on the ordering kinetics and the coercivities of sputter deposited thin films. By alloying 4at% Cu, the temperature that A1 phase orders to the L10 structure decrease from 500°C to 400°C. The lattice parameters of the L10-ordered phase suggest that Fe atoms are substituted by Cu. The grain size increases by the addition of Cu, suggesting that the decrease of the annealing temperature for ordering is due to the enhanced kinetics of ordering as a result of higher diffusivity obtained from the alloy with the lower melting temperature.

AB - We have investigated the effect of Cu addition to the FePt alloy on the ordering kinetics and the coercivities of sputter deposited thin films. By alloying 4at% Cu, the temperature that A1 phase orders to the L10 structure decrease from 500°C to 400°C. The lattice parameters of the L10-ordered phase suggest that Fe atoms are substituted by Cu. The grain size increases by the addition of Cu, suggesting that the decrease of the annealing temperature for ordering is due to the enhanced kinetics of ordering as a result of higher diffusivity obtained from the alloy with the lower melting temperature.

KW - Coercivity

KW - Microstructure

KW - Ordering

KW - Sputtering

KW - Thin film

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U2 - 10.1016/S0304-8853(02)00065-3

DO - 10.1016/S0304-8853(02)00065-3

M3 - Article

AN - SCOPUS:0036530579

SN - 0304-8853

VL - 246

SP - 259

EP - 265

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 1-2

ER -

Effect of Cu on the structure and magnetic properties of FePt sputtered film

Abstract

Keywords

ASJC Scopus subject areas

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