Phase Separation in Nonstoichiometry Ge- Sb- S Chalcogenide Glasses
文献类型：期刊论文
| 作者 | Li, Zhuobin ; Lin, Changgui ; Qu, Guoshun ; Nie, Qiuhua ; Xu, Tiefeng ; Dai, Shixun |
| 刊名 | JOURNAL OF THE AMERICAN CERAMIC SOCIETY
 |
| 出版日期 | 2014 |
| 卷号 | 97期号:3页码:793 |
| 中文摘要 | A series of (1-x)GeS2.5-xSb chalcogenide glasses were prepared using the conventional melt-quenching method. Their microstructure and thermal response were systematically studied. We observe a compositional threshold of x=0.25 which corresponds to chemical stoichiometric composition in the calorimetric experiments. It is in good accordance with the Raman scattering results and laser-induced phase transformation behavior. They also indicate that phase separation of Sb-rich phase exists in the S-poor samples. Moreover, we got a structural modeling of this phase separation: (1) at x=0.25, which is chemical stoichiometric composition, the structural motifs are only SbS3 pyramid and GeS4 tetrahedra, and the three-coordinated SbS3 pyramid is isolated by GeS4 tetrahedra; (2) at x<0.25, the S-S bonds exist in the glass network due to the excess of S; and (3) at x>0.25, the excess of Sb break the Ge-S and Sb-S bonds to form Sb(Ge)-Sb Bonds, and the Sb atoms segregate from the backbone to nucleate a separate Sb-rich phase. This work provides a new way to investigate the phase separation of glass networks and helps us to better understand their related physical properties. |
| 公开日期 | 2015-09-20 |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/11917]  |
| 专题 | 宁波材料技术与工程研究所_2014专题 |
| 推荐引用方式 GB/T 7714 | Li, Zhuobin,Lin, Changgui,Qu, Guoshun,et al. Phase Separation in Nonstoichiometry Ge- Sb- S Chalcogenide Glasses[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2014,97(3):793. |
| APA | Li, Zhuobin,Lin, Changgui,Qu, Guoshun,Nie, Qiuhua,Xu, Tiefeng,&Dai, Shixun.(2014).Phase Separation in Nonstoichiometry Ge- Sb- S Chalcogenide Glasses.JOURNAL OF THE AMERICAN CERAMIC SOCIETY,97(3),793. |
| MLA | Li, Zhuobin,et al."Phase Separation in Nonstoichiometry Ge- Sb- S Chalcogenide Glasses".JOURNAL OF THE AMERICAN CERAMIC SOCIETY 97.3(2014):793. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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