求文献5篇，谢谢！

[序号]：1

[作者]：Byung Chul Jeon, et al

[题名]：Flexoelectric effect in the reversal of self-polarization and associated changes in the electronic functional properties of BiFeO₃ thin films

[序号]：2

[作者]：C. Beekman, et al

[题名]：Phase transitions, phase coexistence, and piezoelectric switching behavior in highly strained BiFeO₃ films

[序号]：3

[作者]：J. Van Landuyt

[题名]：Determination of the displacement vector at the anti-phase boundaries in rutile by contrast experiments in the electron microscope

[序号]：4

[作者]：J. Van Landuyt, et al

[题名]：Fringe patterns at anti-phase boundaries with a=p observed in the electron microscope

[序号]：5

[作者]：J. Van Landuyt, et al

[题名]：Electron microscopic study of twins, anti-phase boundaries, and dislocations in thin films of rutile