Synthesis and high-pressure transformation of metastable wurtzite-structured CuGaS2 nanocrystals
文献类型：期刊论文
| 作者 | Xiao, NR; Zhu, L; Wang, K; Dai, QQ; Wang, YN; Li, SR; Sui, YM; Ma, YM; Liu, J; Liu, BB |
| 刊名 | NANOSCALE
 |
| 出版日期 | 2012 |
| 卷号 | 4期号:23页码:7443-7447 |
| 英文摘要 | The metastable wurtzite nanocrystals of CuGaS2 have been synthesized through a facile and effective one-pot solvothermal approach. Through the Rietveld refinement on experimental X-ray diffraction patterns, we have unambiguously determined the structural parameters and the disordered nature of this wurtzite phase. The metastability of wurtzite structure with respect to the stable chalcopyrite structure was testified by a precise theoretical total energy calculation. Subsequent high-pressure experiments were performed to establish the isothermal phase stability of this wurtzite phase in the pressure range of 0-15.9 GPa, above which another disordered rock salt phase crystallized and remained stable up to 30.3 GPa, the highest pressure studied. Upon release of pressure, the sample was irreversible and intriguingly converted into the energetically more favorable and ordered chalcopyrite structure as revealed by the synchrotron X-ray diffraction and the high-resolution transmission electron microscopic measurements. The observed phase transitions were rationalized by first-principles calculations. The current research surely establishes a novel phase transition sequence of disorder -> disorder -> order, where pressure has played a significant role in effectively tuning stabilities of these different phases. |
| 学科主题 | Chemistry; Science & Technology - Other Topics; Materials Science; Physics |
| 收录类别 | SCI |
| WOS记录号 | WOS:000310978900023 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/224298]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 推荐引用方式 GB/T 7714 | Xiao, NR,Zhu, L,Wang, K,et al. Synthesis and high-pressure transformation of metastable wurtzite-structured CuGaS2 nanocrystals[J]. NANOSCALE,2012,4(23):7443-7447. |
| APA | Xiao, NR.,Zhu, L.,Wang, K.,Dai, QQ.,Wang, YN.,...&Zou, B；刘景.(2012).Synthesis and high-pressure transformation of metastable wurtzite-structured CuGaS2 nanocrystals.NANOSCALE,4(23),7443-7447. |
| MLA | Xiao, NR,et al."Synthesis and high-pressure transformation of metastable wurtzite-structured CuGaS2 nanocrystals".NANOSCALE 4.23(2012):7443-7447. |
入库方式： OAI收割
来源：高能物理研究所
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