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Control over ferroelectric polarization variants in BiFeO3 films through the use of various vicinal SrTiO3 substrates is demonstrated. The revolution of domain formation as a function of vicinality is characterized, and the ferroelectric polarization variants in these films and the corresponding structural variants are carefully analyzed. The piezo/ferroelectric properties of the BiFeO3 films, in turn, can be tailored through this approach.
Chu et al. (Tue,) studied this question.