Evaluation of structural vacancies for 1/1-Al-Re-Si approximant crystals by positron annihilation spectroscopy | |
Yamada, K; Suzuki, H; Kitahata, H; Matsushita, Y; Nozawa, K; Komori, F; Yu, RS![]() ![]() | |
2018 | |
Source Publication | PHILOSOPHICAL MAGAZINE
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ISSN | 1478-6435 |
EISSN | 1478-6443 |
Volume | 98Issue:2Pages:107-117 |
Subtype | Article |
Abstract | The size of structural vacancies and structural vacancy density of 1/1-Al-Re-Si approximant crystals with different Re compositions were evaluated by positron annihilation lifetime and Doppler broadening measurements. Incident positrons were found to be trapped at the monovacancy-size open space surrounded by Al atoms. From a previous analysis using the maximum entropy method and Rietveld method, such an open space is shown to correspond to the centre of Al icosahedral clusters, which locates at the vertex and body centre. The structural vacancy density of non-metallic Al73Re17Si10 was larger than that of metallic Al73Re15Si12. The observed difference in the structural vacancy density reflects that in bonding nature and may explain that in the physical properties of the two samples. |
Keyword | Approximant crystals quasicrystals positron annihilation electrical conductivity chemical bonding |
DOI | 10.1080/14786435.2017.1392631 |
WOS Keyword | QUASI-CRYSTALS ; ICOSAHEDRAL PHASE ; LIFETIME ; SPECTRA ; ALPDRE |
Indexed By | SCI ; EI |
Language | 英语 |
WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering ; Physics |
WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Physics, Applied ; Physics, Condensed Matter |
WOS ID | WOS:000428265700002 |
EI Accession Number | 20174404326624 |
ADS Bibcode | 2018PMag...98..107Y |
Citation statistics |
Cited Times:0 [ADS]
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Document Type | 期刊论文 |
Identifier | http://ir.ihep.ac.cn/handle/311005/285751 |
Collection | 多学科研究中心 |
Affiliation | 中国科学院高能物理研究所 |
First Author Affilication | Institute of High Energy |
Recommended Citation GB/T 7714 | Yamada, K,Suzuki, H,Kitahata, H,et al. Evaluation of structural vacancies for 1/1-Al-Re-Si approximant crystals by positron annihilation spectroscopy[J]. PHILOSOPHICAL MAGAZINE,2018,98(2):107-117. |
APA | Yamada, K.,Suzuki, H.,Kitahata, H.,Matsushita, Y.,Nozawa, K.,...&于润升.(2018).Evaluation of structural vacancies for 1/1-Al-Re-Si approximant crystals by positron annihilation spectroscopy.PHILOSOPHICAL MAGAZINE,98(2),107-117. |
MLA | Yamada, K,et al."Evaluation of structural vacancies for 1/1-Al-Re-Si approximant crystals by positron annihilation spectroscopy".PHILOSOPHICAL MAGAZINE 98.2(2018):107-117. |
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