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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; Kobayashi, Y; Ohdaira, T; Oshima, N; Suzuki, R; Takagiwa, Y; Kimura, K; Kanazawa, I; Yu RS(于润升)
2018
Source PublicationPHILOSOPHICAL MAGAZINE
ISSN1478-6435
EISSN1478-6443
Volume98Issue:2Pages:107-117
SubtypeArticle
AbstractThe 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.
KeywordApproximant crystals quasicrystals positron annihilation electrical conductivity chemical bonding
DOI10.1080/14786435.2017.1392631
WOS KeywordQUASI-CRYSTALS ; ICOSAHEDRAL PHASE ; LIFETIME ; SPECTRA ; ALPDRE
Indexed BySCI ; EI
Language英语
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering ; Physics
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000428265700002
EI Accession Number20174404326624
ADS Bibcode2018PMag...98..107Y
Citation statistics
Cited Times:0 [ADS]
Document Type期刊论文
Identifierhttp://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 AffilicationInstitute 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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