Persistence of the R3 m Phase in Powder GeTe at High Pressure and High Temperature
文献类型：期刊论文
| 作者 | Li, Yanchun ; Cheng H(程虎); Zhang JR(张俊然); Li XD(李晓东); Peng, Feng; Li YC(李延春); Cheng, Hu; Zhang, Junran; Lin, Chuanlong; Li, Xiaodong
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| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY C
 |
| 出版日期 | 2018 |
| 卷号 | 122期号:50页码:28460-28465 |
| ISSN号 | 1932-7447 |
| DOI | 10.1021/acs.jpcc.8b06511 |
| 文献子类 | Article |
| 英文摘要 | As a phase-change material (PCM), rhombohedral GeTe (space group R3m) was believed to transform to the cubic rock salt phase (B1) at 3-4 GPa, associated with the disappearance of a Peierls distortion. However, using a combination of synchrotron X-ray diffraction and theoretical calculations, we found that the R3m phase persists from ambient pressure up to pressures of about 15.8 GPa, in contrast to previous reports. Neither was the B1 phase observed in a heating X-ray powder diffraction experiment. The spurious transformation from R3m to B1 is caused by changes to the compression ratio of lattice parameters in the R3m phase under high pressure/temperature. These findings provide insight into transitions of PCMs, relevant to other materials undergoing displacive transitions under high pressure/temperature. |
| WOS关键词 | X-RAY-DIFFRACTION ; ELECTRICAL-PROPERTIES ; CRYSTAL-STRUCTURE ; II-VI ; TRANSITIONS ; HGTE ; PBSE ; PBTE ; CDTE |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000454566700002 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/286868]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 通讯作者 | Li YC(李延春) |
| 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 | Li, Yanchun,Cheng H,Zhang JR,et al. Persistence of the R3 m Phase in Powder GeTe at High Pressure and High Temperature[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2018,122(50):28460-28465. |
| APA | Li, Yanchun.,程虎.,张俊然.,李晓东.,Peng, Feng.,...&Cheng, Hu, Zhang, Junran, Lin, Chuanlong, Li, Xiaodong, Peng, Feng, Li, Gong.(2018).Persistence of the R3 m Phase in Powder GeTe at High Pressure and High Temperature.JOURNAL OF PHYSICAL CHEMISTRY C,122(50),28460-28465. |
| MLA | Li, Yanchun,et al."Persistence of the R3 m Phase in Powder GeTe at High Pressure and High Temperature".JOURNAL OF PHYSICAL CHEMISTRY C 122.50(2018):28460-28465. |
入库方式： OAI收割
来源：高能物理研究所
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