Trapping of multiple hydrogen atoms in a tungsten monovacancy
Trapping of multiple hydrogen atoms in a tungsten monovacancy
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DOI:
10.15017/27087
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发表时间:
2010-09
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影响因子:
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通讯作者:
K. Ohsawa;大澤 一人;Junya Goto;後藤 準也;Masahiro Yamakami;山上 真広;M. Yamaguchi;山口 正剛;M. Yagi
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文献类型:
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作者:
K. Ohsawa;大澤 一人;Junya Goto;後藤 準也;Masahiro Yamakami;山上 真広;M. Yamaguchi;山口 正剛;M. Yagi
The configuration of multiple hydrogen atoms trapped in a tungsten monovacancy is investigated using first-principles calculations to determine trapping energy. Unlike previous computational studies, which have reported that hydrogen in BCC metal monovacancies occupies octahedral interstitial sites, it is found that the stable sites shift towards tetrahedral interstitial sites as the number of hydrogen atoms increases. As a result, a maximum of twelve hydrogen atoms can become trapped in a tungsten monovacancy.