Pressure-induced phase transitions and structural evolution across the insulator-metal transition in bulk and nanoscale BiFeO3
The pressure-induced phase-transition sequences and structural evolution across the insulator-metal transition (IMT) in multiferroic BiFeO3 still remain unclear. Here we use a combination of high-pressure XRD, XAFS experiment and first principle calculation to investigate the pressure-derived struct...
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| Veröffentlicht in: | Journal of physics. Condensed matter 2019-07, Vol.31 (26), p.265404-265404 |
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| container_title | Journal of physics. Condensed matter |
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| creator | Guo, Zhiying Xing, Haiying Wang, Yan Jia, Quanjie Zheng, Zhijian Gong, Yu Yang, Dongliang Li, Haijing Hao, Xinyu Dong, Juncai Li, Yanchun Li, Xiaodong Chen, Dongliang |
| description | The pressure-induced phase-transition sequences and structural evolution across the insulator-metal transition (IMT) in multiferroic BiFeO3 still remain unclear. Here we use a combination of high-pressure XRD, XAFS experiment and first principle calculation to investigate the pressure-derived structural transformations and structure-related properties in bulk and nanoscale BiFeO3 up to 55 GPa. A new Imma structure of BiFeO3 has been discovered in the pressure range of 48-52 GPa, which presents ferromagnetic (FM) metallic properties and therefore plays a key role in the IMT. Local structure study reveals that the Bi3+ cation gradually shifts toward the centrosymmetric position in BiO12 cluster during IMT. Besides, the detailed structural information of post-perovskite Cmcm phase has also been determined and thus the complete phase sequence up to 60 GPa is obtained. Our research provides a structural origin of the IMT and a new way to understand the FM release in BiFeO3 system. |
| doi_str_mv | 10.1088/1361-648X/ab1469 |
| format | Article |
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Here we use a combination of high-pressure XRD, XAFS experiment and first principle calculation to investigate the pressure-derived structural transformations and structure-related properties in bulk and nanoscale BiFeO3 up to 55 GPa. A new Imma structure of BiFeO3 has been discovered in the pressure range of 48-52 GPa, which presents ferromagnetic (FM) metallic properties and therefore plays a key role in the IMT. Local structure study reveals that the Bi3+ cation gradually shifts toward the centrosymmetric position in BiO12 cluster during IMT. Besides, the detailed structural information of post-perovskite Cmcm phase has also been determined and thus the complete phase sequence up to 60 GPa is obtained. 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Condensed matter</title><addtitle>JPhysCM</addtitle><addtitle>J. Phys.: Condens. Matter</addtitle><description>The pressure-induced phase-transition sequences and structural evolution across the insulator-metal transition (IMT) in multiferroic BiFeO3 still remain unclear. Here we use a combination of high-pressure XRD, XAFS experiment and first principle calculation to investigate the pressure-derived structural transformations and structure-related properties in bulk and nanoscale BiFeO3 up to 55 GPa. A new Imma structure of BiFeO3 has been discovered in the pressure range of 48-52 GPa, which presents ferromagnetic (FM) metallic properties and therefore plays a key role in the IMT. Local structure study reveals that the Bi3+ cation gradually shifts toward the centrosymmetric position in BiO12 cluster during IMT. Besides, the detailed structural information of post-perovskite Cmcm phase has also been determined and thus the complete phase sequence up to 60 GPa is obtained. Our research provides a structural origin of the IMT and a new way to understand the FM release in BiFeO3 system.</description><subject>high pressure</subject><subject>insulator-metal transition</subject><subject>multiferroic BiFeO</subject><subject>structural transformation</subject><issn>0953-8984</issn><issn>1361-648X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNptkU1LAzEQhoMoWKt3j7npwdVkk80mRy1WhYIeFLyFbDLi1m1S8-HR3-7Wil6EgYGZZ15m3kHomJJzSqS8oEzQSnD5fGE6yoXaQZPf0i6aENWwSirJ99FBSktCCJeMT9DnQ4SUSoSq965YcHj9ahLgHI1Pfe6DT9h4h1OOxeYSzYDhIwxl08HGxpASzq-Ae5_KYHKI1QryCP3Njy3cleHtW8YbH5I1A-Crfg737BDtvZghwdFPnqKn-fXj7LZa3N_czS4XVV83ba4cbTjnnXHEudYpI4A6VreUKimlsjW1thOiqTtGRMMddDUwq0DKjneCj6dP0elWdx3De4GU9apPFobBeAgl6bompG1bpdSInmzRPqz1MpTox8W0XWlGdS3GaDjheu1eRvLsH5ISvXmI3rivN-7r7UPYFyqCgDs</recordid><startdate>20190703</startdate><enddate>20190703</enddate><creator>Guo, Zhiying</creator><creator>Xing, Haiying</creator><creator>Wang, Yan</creator><creator>Jia, Quanjie</creator><creator>Zheng, Zhijian</creator><creator>Gong, Yu</creator><creator>Yang, Dongliang</creator><creator>Li, Haijing</creator><creator>Hao, Xinyu</creator><creator>Dong, Juncai</creator><creator>Li, Yanchun</creator><creator>Li, Xiaodong</creator><creator>Chen, Dongliang</creator><general>IOP Publishing</general><scope>7X8</scope><orcidid>https://orcid.org/0000-0002-2290-1198</orcidid><orcidid>https://orcid.org/0000-0002-0835-0684</orcidid><orcidid>https://orcid.org/0000-0001-5904-3409</orcidid></search><sort><creationdate>20190703</creationdate><title>Pressure-induced phase transitions and structural evolution across the insulator-metal transition in bulk and nanoscale BiFeO3</title><author>Guo, Zhiying ; Xing, Haiying ; Wang, Yan ; Jia, Quanjie ; Zheng, Zhijian ; Gong, Yu ; Yang, Dongliang ; Li, Haijing ; Hao, Xinyu ; Dong, Juncai ; Li, Yanchun ; Li, Xiaodong ; Chen, Dongliang</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i257t-d15444bad0dd7d9a6e1d3271198889c21ccb6652b30654deb2e3c9e88b4b64953</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>high pressure</topic><topic>insulator-metal transition</topic><topic>multiferroic BiFeO</topic><topic>structural transformation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Guo, Zhiying</creatorcontrib><creatorcontrib>Xing, Haiying</creatorcontrib><creatorcontrib>Wang, Yan</creatorcontrib><creatorcontrib>Jia, Quanjie</creatorcontrib><creatorcontrib>Zheng, Zhijian</creatorcontrib><creatorcontrib>Gong, Yu</creatorcontrib><creatorcontrib>Yang, Dongliang</creatorcontrib><creatorcontrib>Li, Haijing</creatorcontrib><creatorcontrib>Hao, Xinyu</creatorcontrib><creatorcontrib>Dong, Juncai</creatorcontrib><creatorcontrib>Li, Yanchun</creatorcontrib><creatorcontrib>Li, Xiaodong</creatorcontrib><creatorcontrib>Chen, Dongliang</creatorcontrib><collection>MEDLINE - Academic</collection><jtitle>Journal of physics. Condensed matter</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Guo, Zhiying</au><au>Xing, Haiying</au><au>Wang, Yan</au><au>Jia, Quanjie</au><au>Zheng, Zhijian</au><au>Gong, Yu</au><au>Yang, Dongliang</au><au>Li, Haijing</au><au>Hao, Xinyu</au><au>Dong, Juncai</au><au>Li, Yanchun</au><au>Li, Xiaodong</au><au>Chen, Dongliang</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Pressure-induced phase transitions and structural evolution across the insulator-metal transition in bulk and nanoscale BiFeO3</atitle><jtitle>Journal of physics. Condensed matter</jtitle><stitle>JPhysCM</stitle><addtitle>J. Phys.: Condens. Matter</addtitle><date>2019-07-03</date><risdate>2019</risdate><volume>31</volume><issue>26</issue><spage>265404</spage><epage>265404</epage><pages>265404-265404</pages><issn>0953-8984</issn><eissn>1361-648X</eissn><coden>JCOMEL</coden><abstract>The pressure-induced phase-transition sequences and structural evolution across the insulator-metal transition (IMT) in multiferroic BiFeO3 still remain unclear. Here we use a combination of high-pressure XRD, XAFS experiment and first principle calculation to investigate the pressure-derived structural transformations and structure-related properties in bulk and nanoscale BiFeO3 up to 55 GPa. A new Imma structure of BiFeO3 has been discovered in the pressure range of 48-52 GPa, which presents ferromagnetic (FM) metallic properties and therefore plays a key role in the IMT. Local structure study reveals that the Bi3+ cation gradually shifts toward the centrosymmetric position in BiO12 cluster during IMT. Besides, the detailed structural information of post-perovskite Cmcm phase has also been determined and thus the complete phase sequence up to 60 GPa is obtained. Our research provides a structural origin of the IMT and a new way to understand the FM release in BiFeO3 system.</abstract><pub>IOP Publishing</pub><doi>10.1088/1361-648X/ab1469</doi><tpages>10</tpages><orcidid>https://orcid.org/0000-0002-2290-1198</orcidid><orcidid>https://orcid.org/0000-0002-0835-0684</orcidid><orcidid>https://orcid.org/0000-0001-5904-3409</orcidid></addata></record> |
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| subjects | high pressure insulator-metal transition multiferroic BiFeO structural transformation |
| title | Pressure-induced phase transitions and structural evolution across the insulator-metal transition in bulk and nanoscale BiFeO3 |
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