Pressure-Induced Valence Change and Semiconductor-Metal Transition in PbCrO3
文献类型：期刊论文
| 作者 | Wu M(吴敏) ; Zheng LR(郑黎荣); Chu SQ(储盛启); Wu, M; Zheng, LR; Chu, SQ; Qin, ZX; Chen, XJ; Lin, CL; Tang, Z
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| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY C
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| 出版日期 | 2014 |
| 卷号 | 118期号:40页码:23274-23278 |
| 英文摘要 | Pressure-induced valence change and semiconductormetal transition were revealed in perovskite compound PbCrO3 by X-ray absorption spectroscopy (XAS) and resistance measurements, respectively. The Cr L-2,L-3 edge XAS spectra indicate a charge disproportionation of Cr (3Cr(4+) -> 2Cr(3+) + Cr6+) at ambient pressure, suggesting that the ambient-pressure phase of PbCrO3 has complex local structure and cannot be explained using the simple cubic perovskite structure (Pm-3m). Upon compression up to 4.2 GPa, Cr3+ and C-r6+ ions were converted to Cr4+ via charge transfer, associated with semiconductormetal transition. The high-pressure metal phase is determined to be cubic perovskite structure (Pm-3m). Compared with the previous X-ray diffraction experiment, the large volume collapse (similar to 9.8% at 1.6 GPa) may be related to valence change and semiconductormetal transition. |
| 学科主题 | Chemistry; Science & Technology - Other Topics; Materials Science |
| 收录类别 | SCI |
| WOS记录号 | WOS:000343016800052 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/225151]  |
| 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 | Wu M,Zheng LR,Chu SQ,et al. Pressure-Induced Valence Change and Semiconductor-Metal Transition in PbCrO3[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2014,118(40):23274-23278. |
| APA | 吴敏.,郑黎荣.,储盛启.,Wu, M.,Zheng, LR.,...&胡天斗.(2014).Pressure-Induced Valence Change and Semiconductor-Metal Transition in PbCrO3.JOURNAL OF PHYSICAL CHEMISTRY C,118(40),23274-23278. |
| MLA | 吴敏,et al."Pressure-Induced Valence Change and Semiconductor-Metal Transition in PbCrO3".JOURNAL OF PHYSICAL CHEMISTRY C 118.40(2014):23274-23278. |
入库方式： OAI收割
来源：高能物理研究所
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