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Structural Fluctuations in Metal Nanoparticles

Published online by Cambridge University Press:  02 July 2020

Miyoko Tanaka ,
Masaki Takeguchi  and
Kazuo Furuya
Miyoko Tanaka
Affiliation:
National Research Institute for Metals, 3-13, Sakura, Tsukuba, 305-0003, JAPAN
Masaki Takeguchi
Affiliation:
National Research Institute for Metals, 3-13, Sakura, Tsukuba, 305-0003, JAPAN
Kazuo Furuya
Affiliation:
National Research Institute for Metals, 3-13, Sakura, Tsukuba, 305-0003, JAPAN
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Extract

The structure of small particles attracts great interest for their distinctiveness. Small particles of several materials undergo lattice parameter change or crystal structure change and sometimes form multiply twinned particles (MTPs) [1]. Configurational and structural fluctuations which they show under electron beam irradiation are also interesting phenomena [2]. This quasi-molten state are well explained theoretically [3], but the exact cause of it is still a matter of debate [2,4].

To clarify the behavior of nanoparticles under electron beam more precisely, we grew indium, palladium and molybdenum nanoparticles on Si (110) TEM samples in situ and investigated with an ultrahigh vacuum field emission transmission electron microscope (UHV-FE-TEM). It is a JEOL-2000VF operated at 200 kV with a base pressure of the column less thari 2.0 x 1O−8 Pa. Two kinds of evaporators are attached to the column in order to perform in situ evaporation of metals; an electron beam (EB) evaporator for high melting temperature material and a thermal heating evaporator with tungsten wire for low melting temperature ones.

Type
A. Howie Symposium: Celebration of Pioneering Electron Microscopy
Information
Microscopy and Microanalysis , Volume 5 , Issue S2: Proceedings: Microscopy & Microanalysis '99, Microscopy Society of America 57th Annual Meeting, Microbeam Analysis Society 33rd Annual Meeting, Portland, Oregon August 1-5, 1999 , August 1999 , pp. 718 - 719
Copyright
Copyright © Microscopy Society of America

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References

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