Microstructure and magnetic properties of oxidized Fe-Pt films with high rate order-disorder transformation

Kyung Hwan Na; Jong Gab Na; Hi Jung Kim; Pyung Woo Jang; Jong Ryoul Kim; Sung Rae Lee

doi:10.1109/20.950827

Microstructure and magnetic properties of oxidized Fe-Pt films with high rate order-disorder transformation

Kyung Hwan Na, Jong Gab Na, Hi Jung Kim, Pyung Woo Jang, Jong Ryoul Kim, Sung Rae Lee

Department of Materials Science and Engineering

Research output: Contribution to journal › Conference article › peer-review

6 Citations (Scopus)

Abstract

Structural and magnetic properties of air-annealed Fe_1-x Pt_x films with a high rate order-disorder transformation were analyzed by transmission electron microscopy, Auger electron microscopy, Rutherford backscattering spectroscopy and vibrating sample magnetometer. The air-annealed films consisted of three layers, that is, crystalline Fe oxide layer, Fe-Pt upper layer with small grains, and Fe-Pt bottom layer with large grains from the film surface. Those layers were nonmagnetic, magnetically hard, and with magnetically hard and soft phase, respectively. The Fe content in Fe-Pt metallic layer decreased and then increased with increasing film depth from the oxide/metal interface.

Original language	English
Pages (from-to)	1312-1314
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	37
Issue number	4 I
DOIs	https://doi.org/10.1109/20.950827
Publication status	Published - 2001 Jul
Event	8th Joint Magnetism and Magnetic Materials -International Magnetic Conference- (MMM-Intermag) - San Antonio, TX, United States Duration: 2001 Jan 7 → 2001 Jan 11

Keywords

Air annealing
FePt film
L1 structure
Order-disorder transformation

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/20.950827

Cite this

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title = "Microstructure and magnetic properties of oxidized Fe-Pt films with high rate order-disorder transformation",

abstract = "Structural and magnetic properties of air-annealed Fe1-x Ptx films with a high rate order-disorder transformation were analyzed by transmission electron microscopy, Auger electron microscopy, Rutherford backscattering spectroscopy and vibrating sample magnetometer. The air-annealed films consisted of three layers, that is, crystalline Fe oxide layer, Fe-Pt upper layer with small grains, and Fe-Pt bottom layer with large grains from the film surface. Those layers were nonmagnetic, magnetically hard, and with magnetically hard and soft phase, respectively. The Fe content in Fe-Pt metallic layer decreased and then increased with increasing film depth from the oxide/metal interface.",

keywords = "Air annealing, FePt film, L1 structure, Order-disorder transformation",

author = "Na, {Kyung Hwan} and Na, {Jong Gab} and Kim, {Hi Jung} and Jang, {Pyung Woo} and Kim, {Jong Ryoul} and Lee, {Sung Rae}",

note = "Funding Information: Manuscript received October 7, 2000. The work of P. W. Jang was supported by Korea Ministery of Science and Technology. K.-H. Na, J.-G. Na, and H.-J. Kim are with the Thin Film Technology Research Center, the Korea Institute of Science and Technology, Seoul 136-791, Korea (e-mail: vacuum72@hanmir.com; jgna@kist.re.kr). P.-W. Jang is with the Department of Physics, Chongju University, Cheongju 360-764, Korea (e-mail: pwjang@chongju.ac.kr). J.-R. Kim is with the Department of Metallurgy and Materials Engineering, Hanyang University, Ansan, 425-791 Korea. S.-R. Lee is with Department of Metallurgical Engineering, Korea University, Seoul 136-701 Korea. Publisher Item Identifier S 0018-9464(01)05621-7.; 8th Joint Magnetism and Magnetic Materials -International Magnetic Conference- (MMM-Intermag) ; Conference date: 07-01-2001 Through 11-01-2001",

year = "2001",

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language = "English",

volume = "37",

pages = "1312--1314",

journal = "IEEE Transactions on Magnetics",

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T1 - Microstructure and magnetic properties of oxidized Fe-Pt films with high rate order-disorder transformation

AU - Na, Kyung Hwan

AU - Na, Jong Gab

AU - Kim, Hi Jung

AU - Jang, Pyung Woo

AU - Kim, Jong Ryoul

AU - Lee, Sung Rae

N1 - Funding Information: Manuscript received October 7, 2000. The work of P. W. Jang was supported by Korea Ministery of Science and Technology. K.-H. Na, J.-G. Na, and H.-J. Kim are with the Thin Film Technology Research Center, the Korea Institute of Science and Technology, Seoul 136-791, Korea (e-mail: vacuum72@hanmir.com; jgna@kist.re.kr). P.-W. Jang is with the Department of Physics, Chongju University, Cheongju 360-764, Korea (e-mail: pwjang@chongju.ac.kr). J.-R. Kim is with the Department of Metallurgy and Materials Engineering, Hanyang University, Ansan, 425-791 Korea. S.-R. Lee is with Department of Metallurgical Engineering, Korea University, Seoul 136-701 Korea. Publisher Item Identifier S 0018-9464(01)05621-7.

PY - 2001/7

Y1 - 2001/7

N2 - Structural and magnetic properties of air-annealed Fe1-x Ptx films with a high rate order-disorder transformation were analyzed by transmission electron microscopy, Auger electron microscopy, Rutherford backscattering spectroscopy and vibrating sample magnetometer. The air-annealed films consisted of three layers, that is, crystalline Fe oxide layer, Fe-Pt upper layer with small grains, and Fe-Pt bottom layer with large grains from the film surface. Those layers were nonmagnetic, magnetically hard, and with magnetically hard and soft phase, respectively. The Fe content in Fe-Pt metallic layer decreased and then increased with increasing film depth from the oxide/metal interface.

AB - Structural and magnetic properties of air-annealed Fe1-x Ptx films with a high rate order-disorder transformation were analyzed by transmission electron microscopy, Auger electron microscopy, Rutherford backscattering spectroscopy and vibrating sample magnetometer. The air-annealed films consisted of three layers, that is, crystalline Fe oxide layer, Fe-Pt upper layer with small grains, and Fe-Pt bottom layer with large grains from the film surface. Those layers were nonmagnetic, magnetically hard, and with magnetically hard and soft phase, respectively. The Fe content in Fe-Pt metallic layer decreased and then increased with increasing film depth from the oxide/metal interface.

KW - Air annealing

KW - FePt film

KW - L1 structure

KW - Order-disorder transformation

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DO - 10.1109/20.950827

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VL - 37

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EP - 1314

JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

IS - 4 I

T2 - 8th Joint Magnetism and Magnetic Materials -International Magnetic Conference- (MMM-Intermag)

Y2 - 7 January 2001 through 11 January 2001

ER -

Microstructure and magnetic properties of oxidized Fe-Pt films with high rate order-disorder transformation

Abstract

Keywords

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