"Alexandru Ioan Cuza University of Iasi, RO - Dielectrics, Ferroelectrics & Multiferroics Group, Materials Center Leoben Forschung GmbH, Materials Center Leoben Forschung GmbH, "Alexandru Ioan Cuza University of Iasi, RO - Dielectrics, Ferroelectrics & Multiferroics Group, "Alexandru Ioan Cuza University of Iasi, RO - Dielectrics, Ferroelectrics & Multiferroics Group, "Alexandru Ioan Cuza University of Iasi, RO - Dielectrics, Ferroelectrics & Multiferroics Group, "Alexandru Ioan Cuza University of Iasi, RO - Dept. of Exact & Natural Sciences and "Alexandru Ioan Cuza University of Iasi, RO - Dielectrics, Ferroelectrics & Multiferroics Group