| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Electrical Characterization in the Phase Transition between Cubic PbCrO3 Perovskites at High Pressures |
| WANG Wen-Dan1, HE Duan-Wei1,3**, XIAO Wan-Sheng2, WANG Shan-Min1, XU Ji-An1,3 |
1Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065
2Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640
3Institute of Fluid Physics and National Key Laboratory of Shockwave and Detonation Physics, China Academy of Engineering Physics, Mianyang 621900
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| Cite this article: |
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WANG Wen-Dan, HE Duan-Wei, XIAO Wan-Sheng et al 2013 Chin. Phys. Lett. 30 117201 |
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Abstract By in situ x-ray diffraction, an isostructural phase transition between two kinds of the cubic PbCrOperovskites at around 1.6 GPa and room temperature with a 9.8% volume change is discovered. Recently, we have synthesized this cubic PbCrO3perovskite successfully. Here we report our high-pressure in situ electrical resistance measurements up to 4.1 GPa for this perovskite sample. At room temperature, the resistance shows special changes at 1.2 and 2.7 GPa. They may indicate the starting and ending points of this transformation. At 4.1 GPa, the negative temperature resistance coefficient is observed, which means that phase II could be considered as a semiconductor according to our present measurement.
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Received: 16 September 2013
Published: 30 November 2013
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| PACS: |
72.20.-i
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(Conductivity phenomena in semiconductors and insulators)
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64.70.kg
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(Semiconductors)
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61.50.Ks
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(Crystallographic aspects of phase transformations; pressure effects)
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[1] Xiao W S, Tan D Y, Xiong X L, Liu J and Xu J A 2010 Proc. Natl. Acad. Sci. USA 107 14026
[2] Roth W L and DeVries R C 1967 J. Appl. Phys. 38 951
[3] Arévalo-Lópezá M and Alario-Franco M á 2007 J. Solid State Chem. 180 3271
[4] Jaya S M, Jagdish R, Rao R S and Asokamani R 1992 Mod. Phys. Lett. B 6 103
[5] Wang B T, Yin W, Li W D and Wang F W 2010 arXiv:1012.0143v1 [condmat.strel]
[6] Ganesh P and Cohen R E 2011 Phys. Rev. B 83 172102
[7] Y ?ld?r?m H, A?duk S and G?ko?lu G 2011 J. Alloys Compd. 509 9284
[8] Chamberland B L and Moeller C W 1972 J. Solid State Chem. 5 39
[9] Arévalo-Lópezá M, Santos-Garcia A J D and Alario-Franco M á 2009 Inorg. Chem. 48 5434
[10] DeVries R C and Roth W L 1968 J. Am. Ceram. Soc. 51 72
[11] Wang W D, He D W, Wang H K, Wang F L, Dong H N et al 2009 Acta Phys. Sin. 59 3107 (in Chinese)
[12] Wang F L, He D W, Fang L M, Chen X F, Li Y J et al 2008 Acta Phys. Sin. 57 5429 (in Chinese)
[13] Wang S M, He D W, Wang W D and Lei L 2009 High Press. Res. 29 806
[14] Wang H K, He D W, Tan N, Wang W D, Wang J H et al 2010 Rev. Sci. Instrum. 81 116102
[15] Fang L M, He D W, Chen Ch, Ding L Y and Luo X J 2007 High Press. Res. 27 367 |
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