Evaluation of structural vacancies for 1/1-Al-Re-Si approximant crystals by positron annihilation spectroscopy
文献类型：期刊论文
| 作者 | Yu RS(于润升) ; Kanazawa, I; Kimura, K; Takagiwa, Y; Suzuki, R; Oshima, N; Ohdaira, T; Kobayashi, Y; Yu, RS; Komori, F
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| 刊名 | PHILOSOPHICAL MAGAZINE
 |
| 出版日期 | 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 |
| 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. |
入库方式： OAI收割
来源：高能物理研究所
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