| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Coercivity Ageing Effect on FePt Nanoparticles in Mesoporous Silica via Stepwise Synthesis Strategy |
| Tian-Le Wang1, Zhi-Gang Li1,2**, Li Zhang1, Wei-Ping Chen2, Shang-Shen Feng2**, Wen-Wu Zhong1,2 |
1College of Physics and Electronic Engineering, Taizhou University, Taizhou 318000
2Zhejiang Provincial Key Laboratory for Cutting Tools, Taizhou University, Taizhou 318000
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| Cite this article: |
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Tian-Le Wang, Zhi-Gang Li, Li Zhang et al 2018 Chin. Phys. Lett. 35 067502 |
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Abstract FePt nanoparticles in mesoporous silica are fabricated by a simple stepwise synthesis strategy. A pre-annealing temperature-dependent coercivity-ageing effect in FePt nanoparticles is observed at room temperature. For face-centered cubic (fcc) structured FePt nanoparticles, the ageing effect is sensitive to the pre-annealing temperature, especially when the temperature is close to the phase-transition. The special magnetic behavior of FePt nanoparticles reveals that the physical properties gradually change between fcc and face-centered tetragonal structures, and will deepen our understanding of the mechanism of such magnetism in FePt nanoparticles.
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Received: 25 December 2017
Published: 19 May 2018
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| PACS: |
75.75.-c
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(Magnetic properties of nanostructures)
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81.40.-z
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(Treatment of materials and its effects on microstructure, nanostructure, And properties)
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81.07.Bc
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(Nanocrystalline materials)
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81.16.Be
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(Chemical synthesis methods)
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| Fund: Supported by the Natural Science Foundation of Zhejiang Province under Grant No LY15E010002, and the National Natural Science Foundation of China under Grant No 51671139. |
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