Effects of Interfaces on the Structure and Novel Physical Properties in Epitaxial Multiferroic BiFeO3 Ultrathin Films
Abstract
:1. Introduction
2. Effect of Misfit Strain on BFO Ultrathin Films
2.1. Misfit Strain in Epitaxial Ferroic Ultrathin Films
Polarization components | Notation | Symmetry | Space group | Basis vectors | |
---|---|---|---|---|---|
P1 = P2 = P3 = 0 | paraelectric | Tetragonal | P4/mm | [100], [010], [001] | |
P1 = P2 = 0, P3 ≠ 0 | c phase | Tetragonal | P4mm | [100], [010], [001] | |
P1 ≠ 0, P2 = P3 = 0 | a phase | Orthorhombic | P2mm | [100], [010], [001] | |
P1 = P2 ≠ 0, P3 = 0 | aa phase | Orthorhombic | C2mm | [110], [110], [001] | |
P1 = P2 ≠ 0 < P3 ≠ 0 | r phase ( MA) | Monoclinic | Cm | [110], [110], [001] | |
P1 = P2 ≠ 0 > P3 ≠ 0 | r phase ( MB) | Monoclinic | Cm | [110], [110], [001] | |
P1 ≠ 0, P2 = 0, P3 ≠ 0 | ac phase ( MC) | Monoclinic | Pm | [100], [010], [001] | |
P1 = P2 = P3 ≠ 0 | Fo | Monoclinic | Cm | [110], [110], [001] |
2.2. Normal Strain and Structural Phase Transition of BFO Ultrathin Films
2.3. Shear Strain and Occurrence of MC Phase of BFO Ultrathin Films
2.4. Misfit Strain Induced Enhancements of Polarization, Magnetic and Piezoelectric Responses of BFO Thin Films
2.5. Abnormal Poisson’s Ratio in BFO
3. Temperature-Dependent Phase Transitions of Epitaxial BFO Thin Films
4. Dependence of Depolarization Field and Stability of Domains in BFO Thin Films
4.1. Stability and Crossover of Domain Patterns of BFO Thin Films
4.2. Domain Size Scaling Behavior for BFO Thin Films
4.3. Domain Wall Properties of BFO Thin Films
5. Conclusions and Outlook
Acknowledgments
Conflicts of Interest
References
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Huang, C.; Chen, L. Effects of Interfaces on the Structure and Novel Physical Properties in Epitaxial Multiferroic BiFeO3 Ultrathin Films. Materials 2014, 7, 5403-5426. https://doi.org/10.3390/ma7075403
Huang C, Chen L. Effects of Interfaces on the Structure and Novel Physical Properties in Epitaxial Multiferroic BiFeO3 Ultrathin Films. Materials. 2014; 7(7):5403-5426. https://doi.org/10.3390/ma7075403
Chicago/Turabian StyleHuang, Chuanwei, and Lang Chen. 2014. "Effects of Interfaces on the Structure and Novel Physical Properties in Epitaxial Multiferroic BiFeO3 Ultrathin Films" Materials 7, no. 7: 5403-5426. https://doi.org/10.3390/ma7075403