Evaluation of structural vacancies for 1/1-Al-Re-Si approximant crystals by positron annihilation spectroscopy

doi:10.1080/14786435.2017.1392631

	Evaluation of structural vacancies for 1/1-Al-Re-Si approximant crystals by positron annihilation spectroscopy
	Yu RS(于润升); Kanazawa, I; Kimura, K; Takagiwa, Y; Suzuki, R; Oshima, N; Ohdaira, T; Kobayashi, Y; Yu, RS; Komori, F
刊名	PHILOSOPHICAL MAGAZINE
	2018
卷号	98 期号:2 页码:107-117
关键词	Approximant crystals quasicrystals positron annihilation electrical conductivity chemical bonding
ISSN号	1478-6435
DOI	10.1080/14786435.2017.1392631
文献子类	Article
英文摘要	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.
电子版国际标准刊号	1478-6443
WOS关键词	QUASI-CRYSTALS ; ICOSAHEDRAL PHASE ; LIFETIME ; SPECTRA ; ALPDRE
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering ; Physics
语种	英语
WOS记录号	WOS:000428265700002
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/285751]
专题	高能物理研究所_多学科研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Yu RS,Kanazawa, I,Kimura, K,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	于润升.,Kanazawa, I.,Kimura, K.,Takagiwa, Y.,Suzuki, R.,...&Kitahata, H.(2018).Evaluation of structural vacancies for 1/1-Al-Re-Si approximant crystals by positron annihilation spectroscopy.PHILOSOPHICAL MAGAZINE,98(2),107-117.
MLA	于润升,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.