Magnetic Macrostructural Study of L1<SUB>0</SUB> Nanocrystalline FePt Alloys by Means of Electron Holography
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- Xia Weixing
- Institute of Multidisciplinary Research for Advanced Material, Tohoku Univerisity
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- Kim Joong Jung
- Institute of Multidisciplinary Research for Advanced Material, Tohoku Univerisity
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- Shindo Daisuke
- Institute of Multidisciplinary Research for Advanced Material, Tohoku Univerisity
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- Makino Akihiro
- Institute for Materials Research, Tohoku Univerisity
Bibliographic Information
- Other Title
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- Magnetic macrostructural study of L10 nanocrystalline FePt alloys by means of electron holography
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Description
L10 nanocrystalline FePt alloy is directly formed by rapid quenching the melt with simultaneous addition of Zr and B and high coercivity can be obtained in the composition range of (Fe0.55Pt0.45)78Zr2–4B18–20. Single domain characteristic of the nanocrytalline FePt grains is clarified by Lorentz micorosocpy. Through the measurement of original magnetization curve and hysteresis loop, it is proposed that the mechanism of coercivity belongs to nucleation type. Distributions of lines of magnetic flux at demagnetized state and remanent state for two samples of (Fe0.55Pt0.45)78Zr4B18 and (Fe0.55Pt0.45)78Zr2B20 are observed by electron holography through ex situ experiment by applying a magnetic field. Obvious differences in the reconstructed phase images indicate the difference of the coercivities of the two samples.
Journal
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- MATERIALS TRANSACTIONS
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MATERIALS TRANSACTIONS 48 (10), 2612-2615, 2007
The Japan Institute of Metals and Materials
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Details 詳細情報について
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- CRID
- 1390282679225976704
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- NII Article ID
- 10019955983
- 130004453356
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- NII Book ID
- AA1151294X
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- ISSN
- 13475320
- 13459678
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- HANDLE
- 10097/52167
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- NDL BIB ID
- 8931494
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- Text Lang
- en
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- Data Source
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- JaLC
- IRDB
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed