The Study on Magnetic Properties of Fe-Pt Alloy Films (Pt=20-25 at%)
碩士 === 國立成功大學 === 材料科學(工程)學系 === 84 === Abstract The Fe-Pt alloy films were prepared by D.C. planner magnetron sputtering method under a argon pressure of 50 mtorr. The distance of target to substrate was 4...
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ndltd-TW-084NCKU01590342016-02-05T04:16:27Z http://ndltd.ncl.edu.tw/handle/40406186180043455827 The Study on Magnetic Properties of Fe-Pt Alloy Films (Pt=20-25 at%) 鐵-鉑合金薄膜之磁性研究(鉑含量為20-25at%) Lin, Jiahn-Shring 林健行 碩士 國立成功大學 材料科學(工程)學系 84 Abstract The Fe-Pt alloy films were prepared by D.C. planner magnetron sputtering method under a argon pressure of 50 mtorr. The distance of target to substrate was 4 cm. The microstructure and magnetic properties of Fe-Pt alloy films were studied. The effect of aging and dopping on the magneto-optical properties werealso examined. The range of Pt content in the films is 17.01-25.23at%. By increasing thesputtering power, the Pt content becomes gradually decreases. The microstruct- ure of as-deposited films is the microcrystalline gamma-(Fe,Pt) phase with FCC structure. When applied field is 14 kOe, the range of magnetization of 500-700 emu/c.c. are obtained. The coercive forces increase and the magnetiza- tion decrease with increasing Pt content. The Curie temperatures were measured in the range of 180 to 275 ℃. The maximum Kerr angle of 0.25 degree could be obtained for the sample of 21.96at% Pt. After aging, the crystalline structure of Fe3Pt phase was formed. According to the size and number of Fe3 Pt particles,the coercivities, remanent, Kerr angle and Curie temperature were changed. The addition of V, Nb makes the as-deposited films becomes amorphous moreeasily. Only adding small amount of V element can increase the magnetic proper-ties of films. More addition causes the reducing of magneto-optical properties.Additions would enhance coercive forces ,while the Curie temperature decreases slightly. Chang Yen-Hwei, Hung Ming-Pen 張炎輝, 洪銘盤 學位論文 ; thesis 76 zh-TW |
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碩士 === 國立成功大學 === 材料科學(工程)學系 === 84 === Abstract
The Fe-Pt alloy films were prepared by D.C. planner magnetron
sputtering method under a argon pressure of 50 mtorr. The
distance of target to substrate was 4 cm. The microstructure and
magnetic properties of Fe-Pt alloy films were studied. The
effect of aging and dopping on the magneto-optical properties
werealso examined.
The range of Pt content in the films is 17.01-25.23at%. By
increasing thesputtering power, the Pt content becomes gradually
decreases. The microstruct- ure of as-deposited films is the
microcrystalline gamma-(Fe,Pt) phase with FCC structure.
When applied field is 14 kOe, the range of magnetization of
500-700 emu/c.c. are obtained. The coercive forces increase and
the magnetiza- tion decrease with increasing Pt content. The
Curie temperatures were measured in the range of 180 to 275 ℃.
The maximum Kerr angle of 0.25 degree could be obtained for the
sample of 21.96at% Pt. After aging, the crystalline structure of
Fe3Pt phase was formed. According to the size and number of Fe3
Pt particles,the coercivities, remanent, Kerr angle and Curie
temperature were changed.
The addition of V, Nb makes the as-deposited films becomes
amorphous moreeasily. Only adding small amount of V element can
increase the magnetic proper-ties of films. More addition causes
the reducing of magneto-optical properties.Additions would
enhance coercive forces ,while the Curie temperature decreases
slightly.
|
author2 |
Chang Yen-Hwei, Hung Ming-Pen |
author_facet |
Chang Yen-Hwei, Hung Ming-Pen Lin, Jiahn-Shring 林健行 |
author |
Lin, Jiahn-Shring 林健行 |
spellingShingle |
Lin, Jiahn-Shring 林健行 The Study on Magnetic Properties of Fe-Pt Alloy Films (Pt=20-25 at%) |
author_sort |
Lin, Jiahn-Shring |
title |
The Study on Magnetic Properties of Fe-Pt Alloy Films (Pt=20-25 at%) |
title_short |
The Study on Magnetic Properties of Fe-Pt Alloy Films (Pt=20-25 at%) |
title_full |
The Study on Magnetic Properties of Fe-Pt Alloy Films (Pt=20-25 at%) |
title_fullStr |
The Study on Magnetic Properties of Fe-Pt Alloy Films (Pt=20-25 at%) |
title_full_unstemmed |
The Study on Magnetic Properties of Fe-Pt Alloy Films (Pt=20-25 at%) |
title_sort |
study on magnetic properties of fe-pt alloy films (pt=20-25 at%) |
url |
http://ndltd.ncl.edu.tw/handle/40406186180043455827 |
work_keys_str_mv |
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