Growth and Piezoelectric Properties of Centimeter-Size BiFeO3 Single Crystals Codoped with Sr and Ti Ions

• DOI: 10.1021/acs.cgd.4c00944
• Publication Date: 2024-10-23T14:36:39Z
• Authors: Qinyu Cao; Jinlun Liang; Liangchen Zhang; Junying Wu; Teng Gao; Xiaolin Hu; Naifeng Zhuang
• Keywords: Centimeter

A BiFeO3 crystal has both antiferromagnetism and piezoelectricity at room temperature. Unfortunately, it is difficult to grow a larger-size high-quality single crystal. By top-seeded solution growth method using Bi2O3 as solvent, centimeter-size Bi1–xSrxFe1–yTiyO3 crystals were successfully grown in this paper. Moreover, the lattice symmetry of changes from rhombohedra cube with increase Sr2+ Ti4+ doping concentration. The magnetization Bi0.6Sr0.4Fe0.6Ti0.4O3 reaches 0.25 emu/g temperature, which about 3.1 times large that crystal, an applied magnetic field 10,000 Oe. piezoelectric effect observed on all Bi0.8Sr0.2Fe0.8Ti0.2O3-2 wafers; especially, strong response was ⟨111⟩-oriented wafer. optimizing type concentration doped ions, expected obtain large-size better properties.