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VNUHCM Journal of

Science and Technology Development

An official journal of Viet Nam National University Ho Chi Minh City, Viet Nam since 1997

ISSN: 1859-0128
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STUDY OF CONCENTRATION OF DIVACANCY IN METAL AI BY APPLYING OF THE POSI RON TRAPPING MODEL WITH DETRAPPING EFFECT OF MONOVACANCY

Chau Van Tao 1
Mai Van Nhon 1
Le Tan Hau 1
Phan Quoc Uy 1

Volume & Issue: Vol. 3 No. 1 (2000) | Page No.: 26-33 | DOI: 10.32508/stdj.v3i1.3523
Published: 2000-01-31

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Copyright © 2000 by the author(s).

Copyright The Author(s) 2023. This article is published with open access by Vietnam National University, Ho Chi Minh city, Vietnam. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0) which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited. 

Abstract

By applying the positron trapping model (PTM) for metal Al with monovacancy, divacancy, detrapping effect of positron for monovacancy, the formation energy of monovacancy and divacancy are estimated. By using the value of formation energy of divacancy in the case with the trap rate depends on temperatur is E_d^F=0,956 ± 0,120 (eV) the fraction of concentrate of divacancy is estimated at differently temperatures. These results are available for researching stable structure of metal Al and its alloy.

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