Effects of annealing condition on the structural and magnetic properties of FePt thin films

Chang Hoi Park; Jong Gab Na; Pyung Woo Jang; Seong Rae Lee

doi:10.1109/20.801076

Effects of annealing condition on the structural and magnetic properties of FePt thin films

Chang Hoi Park, Jong Gab Na, Pyung Woo Jang, Seong Rae Lee

Department of Materials Science and Engineering

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

16 Citations (Scopus)

Abstract

Equiatomic FePt films were deposited by a dc sputtering method and annealed in the air and in a vacuum at 350C for up to 60 min. The order-disorder transformation occurs almost entirely within 10 min and a very high coercivity of 6.8 kOe could be obtained in the air-annealed films while the transformation occured very slowly in the vacuum-annealed films. This higher transformation rate could be also verified in the X-ray diffraction analysis. The reason for the higher rate seems to be the diffusion of oxygen atoms and possible mechanism was discussed.

Original language	English
Pages (from-to)	3034-3036
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	35
Issue number	5 PART 1
DOIs	https://doi.org/10.1109/20.801076
Publication status	Published - 1999

Keywords

Annealing in the air
Fept film
Order-disorder transition rate

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/20.801076

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abstract = "Equiatomic FePt films were deposited by a dc sputtering method and annealed in the air and in a vacuum at 350C for up to 60 min. The order-disorder transformation occurs almost entirely within 10 min and a very high coercivity of 6.8 kOe could be obtained in the air-annealed films while the transformation occured very slowly in the vacuum-annealed films. This higher transformation rate could be also verified in the X-ray diffraction analysis. The reason for the higher rate seems to be the diffusion of oxygen atoms and possible mechanism was discussed.",

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AU - Na, Jong Gab

AU - Jang, Pyung Woo

AU - Lee, Seong Rae

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Y1 - 1999

N2 - Equiatomic FePt films were deposited by a dc sputtering method and annealed in the air and in a vacuum at 350C for up to 60 min. The order-disorder transformation occurs almost entirely within 10 min and a very high coercivity of 6.8 kOe could be obtained in the air-annealed films while the transformation occured very slowly in the vacuum-annealed films. This higher transformation rate could be also verified in the X-ray diffraction analysis. The reason for the higher rate seems to be the diffusion of oxygen atoms and possible mechanism was discussed.

AB - Equiatomic FePt films were deposited by a dc sputtering method and annealed in the air and in a vacuum at 350C for up to 60 min. The order-disorder transformation occurs almost entirely within 10 min and a very high coercivity of 6.8 kOe could be obtained in the air-annealed films while the transformation occured very slowly in the vacuum-annealed films. This higher transformation rate could be also verified in the X-ray diffraction analysis. The reason for the higher rate seems to be the diffusion of oxygen atoms and possible mechanism was discussed.

KW - Annealing in the air

KW - Fept film

KW - Order-disorder transition rate

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JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

IS - 5 PART 1

ER -

Effects of annealing condition on the structural and magnetic properties of FePt thin films

Abstract

Keywords

ASJC Scopus subject areas

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