Equilibrium phase structures for BiFeO3 thin films on LaAlO3 substrate
The stable phase structure of BiFeO3 films on LaAlO3 substrate was studied. In the biaxial constrained case, it changes from a tetragonal phase to a rhombohedral one with the increase of film thickness. By reducing the degree of the constrain from the biaxial case to the uniaxial one, the film relax...
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| Main Authors: | , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
2013
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| Online Access: | https://hdl.handle.net/10356/96811 http://hdl.handle.net/10220/11505 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | The stable phase structure of BiFeO3 films on LaAlO3 substrate was studied. In the biaxial constrained case, it changes from a tetragonal phase to a rhombohedral one with the increase of film thickness. By reducing the degree of the constrain from the biaxial case to the uniaxial one, the film relaxes in a much smaller thickness to a rhombohedral phase and an enhanced piezoelectric response is predicted in comparison to that of biaxial constrained case. |
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