1. School of Natural Sciences and Mathematics Ural Federal University Ekaterinburg 620000 Russia
2. Center for Nanophase Materials Sciences Oak Ridge National Laboratory Oak Ridge TN 37830 USA
3. Scientific‐Practical Materials Research Centre of NAS of Belarus Minsk 220072 Belarus
4. Electronic Materials Research Laboratory Key Laboratory of the Ministry of Education & International Center for Dielectric Research Xi'an Jiaotong University Xi'an 710049 China
5. Department of Physics & CICECO University of Aveiro 3810‐193 Aveiro Portugal
6. Piezo‐ and Magnetoelectric Materials Research & Development Centre Research School of Chemistry & Applied Biomedical Sciences National Research Tomsk Polytechnic University Tomsk 634050 Russia