| CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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FMAA-MS Investigation into Ni68Fe32 Nanoalloy with Sample Length Less than 30mm |
| LI Ping-Yun1, CAO Zhen-Hua1, JIANG Zhong-Hao2, MENG Xiang-Kang1**
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1National Laboratory of Solid State Microstructures, Department of Materials Science and Engineering, Nanjing University, Nanjing 210093
2School of Materials Science and Engineering, Key Laboratory of Automobile Materials, Jilin University, Changchun 130025
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| Cite this article: |
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LI Ping-Yun, CAO Zhen-Hua, JIANG Zhong-Hao et al 2011 Chin. Phys. Lett. 28 086401 |
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Abstract An investigation into the properties of nanocrystalline (NC) materials with sample lengths less than 30 mm seems to be a challenge by using conventional mechanical spectroscopy (MS). We use a newly developed frequency modulation acoustic attenuation mechanical spectroscopy (FMAA-MS) to investigate phase transition in Ni68Fe32 NC alloy (22 nm) where the length of the sample is 10 mm. An internal friction peak accompanied by an abrupt increase in resonant frequency occurs at 641 K, which originates from order-disorder phase transition, confirmed by a vibrating sample magnetometer and differential scanning calorimetry.
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| Keywords:
64.60.A-
81.30.Hd
81.07.Bc
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Received: 01 November 2010
Published: 28 July 2011
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| PACS: |
64.60.A-
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(Specific approaches applied to studies of phase transitions)
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81.30.Hd
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(Constant-composition solid-solid phase transformations: polymorphic, massive, and order-disorder)
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81.07.Bc
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(Nanocrystalline materials)
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