Effect of lanthanum doping on tetragonal-like BiFeO3 with mixed-phase domain structures
The recent discoveries of both chemical-driven and strain-driven morphotropic phase boundaries (MPBs) in BiFeO3 (BFO) thin films have opened up new horizons in developing high-performance lead-free piezoelectrics. An attempt to bridge these two MPBs is made by doping La into highly strained BFO thin...
| Main Authors: | , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
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2014
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| Online Access: | https://hdl.handle.net/10356/103223 http://hdl.handle.net/10220/24412 |
| _version_ | 1811694480089153536 |
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| author | You, Lu Caesario, Petrus Fang, Liang Ren, Peng Wang, Le Zhou, Yang Gruverman, Alexei Wang, Junling |
| author2 | School of Materials Science & Engineering |
| author_facet | School of Materials Science & Engineering You, Lu Caesario, Petrus Fang, Liang Ren, Peng Wang, Le Zhou, Yang Gruverman, Alexei Wang, Junling |
| author_sort | You, Lu |
| collection | NTU |
| description | The recent discoveries of both chemical-driven and strain-driven morphotropic phase boundaries (MPBs) in BiFeO3 (BFO) thin films have opened up new horizons in developing high-performance lead-free piezoelectrics. An attempt to bridge these two MPBs is made by doping La into highly strained BFO thin films with the coexistence of tetragonal-like and rhombohedral-like phases. The structural, morphological, and ferroelectric properties of such films are investigated. It is observed that La doping changes the energy landscape between the tetragonal-like and the rhombohedral-like polymorphs due to the chemical pressure imposed by the La substitution. Polar instability is found upon increasing La doping for the in-plane polarization component, which correlates with the vanishing of in-plane ferroelectric domain structures. The transition sequence of the in-plane ferroelectric polarization resembles that previously reported for the bulklike rhombohedral phase of BFO under continuous La doping, indicating the universality of the chemical-alloying effect on the ferroelectric order. |
| first_indexed | 2024-10-01T07:08:14Z |
| format | Journal Article |
| id | ntu-10356/103223 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:08:14Z |
| publishDate | 2014 |
| record_format | dspace |
| spelling | ntu-10356/1032232023-07-14T15:55:30Z Effect of lanthanum doping on tetragonal-like BiFeO3 with mixed-phase domain structures You, Lu Caesario, Petrus Fang, Liang Ren, Peng Wang, Le Zhou, Yang Gruverman, Alexei Wang, Junling School of Materials Science & Engineering DRNTU::Science::Chemistry::Physical chemistry::Electrochemistry The recent discoveries of both chemical-driven and strain-driven morphotropic phase boundaries (MPBs) in BiFeO3 (BFO) thin films have opened up new horizons in developing high-performance lead-free piezoelectrics. An attempt to bridge these two MPBs is made by doping La into highly strained BFO thin films with the coexistence of tetragonal-like and rhombohedral-like phases. The structural, morphological, and ferroelectric properties of such films are investigated. It is observed that La doping changes the energy landscape between the tetragonal-like and the rhombohedral-like polymorphs due to the chemical pressure imposed by the La substitution. Polar instability is found upon increasing La doping for the in-plane polarization component, which correlates with the vanishing of in-plane ferroelectric domain structures. The transition sequence of the in-plane ferroelectric polarization resembles that previously reported for the bulklike rhombohedral phase of BFO under continuous La doping, indicating the universality of the chemical-alloying effect on the ferroelectric order. Published version 2014-12-09T09:28:16Z 2019-12-06T21:07:49Z 2014-12-09T09:28:16Z 2019-12-06T21:07:49Z 2014 2014 Journal Article You, L., Caesario, P., Fang, L., Ren, P., Wang, L., Zhou, Y., et al. (2014). Effect of lanthanum doping on tetragonal-like BiFeO3 with mixed-phase domain structures. Physical review B, 90, 134110 – . https://hdl.handle.net/10356/103223 http://hdl.handle.net/10220/24412 10.1103/PhysRevB.90.134110 en Physical review B © 2014 American Physical Society. This paper was published in Physical Review B and is made available as an electronic reprint (preprint) with permission of American Physical Society. The paper can be found at the following official DOI: [http://dx.doi.org/10.1103/PhysRevB.90.134110 ]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. 9 p. application/pdf |
| spellingShingle | DRNTU::Science::Chemistry::Physical chemistry::Electrochemistry You, Lu Caesario, Petrus Fang, Liang Ren, Peng Wang, Le Zhou, Yang Gruverman, Alexei Wang, Junling Effect of lanthanum doping on tetragonal-like BiFeO3 with mixed-phase domain structures |
| title | Effect of lanthanum doping on tetragonal-like BiFeO3 with mixed-phase domain structures |
| title_full | Effect of lanthanum doping on tetragonal-like BiFeO3 with mixed-phase domain structures |
| title_fullStr | Effect of lanthanum doping on tetragonal-like BiFeO3 with mixed-phase domain structures |
| title_full_unstemmed | Effect of lanthanum doping on tetragonal-like BiFeO3 with mixed-phase domain structures |
| title_short | Effect of lanthanum doping on tetragonal-like BiFeO3 with mixed-phase domain structures |
| title_sort | effect of lanthanum doping on tetragonal like bifeo3 with mixed phase domain structures |
| topic | DRNTU::Science::Chemistry::Physical chemistry::Electrochemistry |
| url | https://hdl.handle.net/10356/103223 http://hdl.handle.net/10220/24412 |
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