Activation volume for nanocrystal growth in amorphous Nd9F85B6

Wei Wu; Defeng Guo; Wei Li; Lanlan Li; Hongyu Sun; Xiangyi Zhang; Xiaohong Li; Baoting Liu

doi:10.1063/1.3000565

Activation volume for nanocrystal growth in amorphous Nd₉F₈₅B₆

Wei Wu, Defeng Guo, Wei Li, Lanlan Li, Hongyu Sun, Xiangyi Zhang, Xiaohong Li, Baoting Liu

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

Abstract

We have measured the pressure dependence of the growth of α-Fe and Nd₂Fe₁₄B nanocrystals in amorphous Nd₉Fe₈₅B₆ up to 6 GPa at a temperature of 923 K, yielding an activation volume of V=0.760.04 and 0.570.05 for atomic diffusion in the growth process of α-Fe and Nd₂Fe₁₄B nanocrystals, respectively, where is the mean atomic volume of the alloy. This demonstrates that the growth of nanocrystals is dependent on atomic diffusion mediated by vacancy-type thermal defects. Atomic processes of the growth of nanocrystals are discussed.

Original language	English
Article number	086103
Journal	Journal of Applied Physics
Volume	104
Issue number	8
Number of pages	3
ISSN	0021-8979
DOIs	https://doi.org/10.1063/1.3000565
Publication status	Published - 2008
Externally published	Yes

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title = "Activation volume for nanocrystal growth in amorphous Nd9F85B6",

abstract = "We have measured the pressure dependence of the growth of α-Fe and Nd2Fe14B nanocrystals in amorphous Nd9Fe85B6 up to 6 GPa at a temperature of 923 K, yielding an activation volume of V=0.760.04 and 0.570.05 for atomic diffusion in the growth process of α-Fe and Nd2Fe14B nanocrystals, respectively, where is the mean atomic volume of the alloy. This demonstrates that the growth of nanocrystals is dependent on atomic diffusion mediated by vacancy-type thermal defects. Atomic processes of the growth of nanocrystals are discussed.",

author = "Wei Wu and Defeng Guo and Wei Li and Lanlan Li and Hongyu Sun and Xiangyi Zhang and Xiaohong Li and Baoting Liu",

year = "2008",

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language = "English",

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journal = "Journal of Applied Physics",

issn = "0021-8979",

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T1 - Activation volume for nanocrystal growth in amorphous Nd9F85B6

AU - Wu, Wei

AU - Guo, Defeng

AU - Li, Wei

AU - Li, Lanlan

AU - Sun, Hongyu

AU - Zhang, Xiangyi

AU - Li, Xiaohong

AU - Liu, Baoting

PY - 2008

Y1 - 2008

N2 - We have measured the pressure dependence of the growth of α-Fe and Nd2Fe14B nanocrystals in amorphous Nd9Fe85B6 up to 6 GPa at a temperature of 923 K, yielding an activation volume of V=0.760.04 and 0.570.05 for atomic diffusion in the growth process of α-Fe and Nd2Fe14B nanocrystals, respectively, where is the mean atomic volume of the alloy. This demonstrates that the growth of nanocrystals is dependent on atomic diffusion mediated by vacancy-type thermal defects. Atomic processes of the growth of nanocrystals are discussed.

AB - We have measured the pressure dependence of the growth of α-Fe and Nd2Fe14B nanocrystals in amorphous Nd9Fe85B6 up to 6 GPa at a temperature of 923 K, yielding an activation volume of V=0.760.04 and 0.570.05 for atomic diffusion in the growth process of α-Fe and Nd2Fe14B nanocrystals, respectively, where is the mean atomic volume of the alloy. This demonstrates that the growth of nanocrystals is dependent on atomic diffusion mediated by vacancy-type thermal defects. Atomic processes of the growth of nanocrystals are discussed.

U2 - 10.1063/1.3000565

DO - 10.1063/1.3000565

M3 - Journal article

SN - 0021-8979

VL - 104

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 8

M1 - 086103

ER -