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Effects of P Content on Morphology of Nanocrystals Induced by FIB Irradiation in Ni-P Amorphous Alloy

Published online by Cambridge University Press:  01 February 2011

Koji Sato
Affiliation:
sato.k.ae@m.titech.ac.jp, Tokyo Institute of Technology, Precision and Intelligence laboratory, Nagatuta 4259, Midori-ku, Yokohama, 226-8503, Japan
Chiemi Ishiyama
Affiliation:
ishiyama.c.aa@m.titech.ac.jp, Tokyo Institute of Technology, Precision and Intelligence laboratory, Nagatuta 4259 R2-18, Midori-ku, Yokohama, 226-8503, Japan
Masato Sone
Affiliation:
sone.m.aa@m.titech.ac.jp, Tokyo Institute of Technology, Precision and Intelligence laboratory, Nagatuta 4259 R2-18, Midori-ku, Yokohama, 226-8503, Japan
Yakichi Higo
Affiliation:
yhigo@pi.titech.ac.jp, Tokyo Institute of Technology, Precision and Intelligence laboratory, Nagatuta 4259 R2-18, Midori-ku, Yokohama, 226-8503, Japan
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Abstract

We studied the effects of phosphorus (P) on Ni nanocrystalline morphology formed by focused ion beam (FIB) irradiation for Ni-P amorphous alloy thin films. The P content in the amorphous alloy was varied from 8 to 12 wt.%. The nanocrystals induced by the FIB irradiation for Ni-11.8, 8.9, 7.9 wt.% amorphous alloy had an f.c.c. structure and showed unique crystallographic orientation relationships to the geometry of the focused ion beam, that is, {111}f.c.c. parallel to the irradiated plane and <110>f.c.c. parallel to the projected ion beam direction, respectively. The Ni nanocrystals precipitated like aggregates with decreasing of the P content. These results represent that the P content does not affect crystallographic orientation relationships, while influences the precipitation distribution of Ni nanocrystals generated by the FIB irradiation.

Type
Research Article
Copyright
Copyright © Materials Research Society 2007

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References

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Effects of P Content on Morphology of Nanocrystals Induced by FIB Irradiation in Ni-P Amorphous Alloy
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Effects of P Content on Morphology of Nanocrystals Induced by FIB Irradiation in Ni-P Amorphous Alloy
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