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| Content Provider | Royal Society of Chemistry (RSC) |
|---|---|
| Author | Zhao, Jingyan Wu, Hua Ye, Zuo-Guang Zhuang, Jian Ren, Wei Bokov, Alexei A. Su, Lun-Wei |
| Copyright Year | 2015 |
| Abstract | To investigate the effects of dysprosium ions on the crystal structure and multiferroic properties of the bismuth ferrite-based systems, Dy-substituted solid solutions of 0.66Bi1−xDyxFeO3–0.34PbTiO3, with x = 0, 0.05, 0.1, 0.15, 0.2, 0.3, 0.4 and 0.5, have been synthesized and characterized. With increasing concentration of Dy, the crystal structure transforms from a primarily tetragonal P4mm phase to a rhombohedral R3c phase. Moreover, the R3c (or monoclinic Cc) phase is found to coexist with the P4mm phase in the composition range of 0 ≤ x < 0.2, which is attributed to the effect of Dy that favours the rhombohedral structure. Interestingly, the ferroelectric phase transition temperature TC increases with increasing Dy concentration for compositions with x ≥ 0.1. This is explained by the crystal structural effect that compensates the dilution effect of ferroelectrically active Bi3+. Piezoresponse force microscopy (PFM) imaging reveals the formation of 180° polar domains, which can be switched by applying electric fields through the PFM tip, confirming the ferroelectricity. A partial phase diagram is established in terms of composition and temperature. It describes the crystal structure and ferroelectric phases, as well as the solubility limit, of the Bi1−xDyxFeO3–PbTiO3 solid solution system. |
| Starting Page | 12450 |
| Ending Page | 12456 |
| Page Count | 7 |
| File Format | HTM / HTML PDF |
| ISSN | 20507526 |
| Volume Number | 3 |
| Issue Number | 48 |
| Journal | Journal of Materials Chemistry C |
| DOI | 10.1039/c5tc02289d |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Access Restriction | Open |
| Subject Keyword | PFM Dy Dysprosium Bismuth Tetragonal crystal system Hexagonal crystal family Monoclinic crystal system Ferroelectricity Phase transition Piezoresponse force microscopy Phase diagram Solid solution |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry Materials Chemistry |
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