| Autor: |
Cao, Qinyu, Liang, Jinlun, Zhang, Liangchen, Wu, Junying, Gao, Teng, Hu, Xiaolin, Zhuang, Naifeng |
| Zdroj: |
Crystal Growth & Design; November 2024, Vol. 24 Issue: 21 p8914-8920, 7p |
| Abstrakt: |
A BiFeO3crystal has both antiferromagnetism and piezoelectricity at room temperature. Unfortunately, it is difficult to grow a larger-size and high-quality BiFeO3single crystal. By a top-seeded solution growth method using Bi2O3as a solvent, centimeter-size Bi1–xSrxFe1–yTiyO3crystals were successfully grown in this paper. Moreover, the lattice symmetry of the Bi1–xSrxFe1–yTiyO3crystals changes from rhombohedra to cube with the increase in Sr2+and Ti4+doping concentration. The magnetization of a Bi0.6Sr0.4Fe0.6Ti0.4O3crystal reaches 0.25 emu/g at room temperature, which is about 3.1 times as large as that of a BiFeO3single crystal, in an applied magnetic field of 10,000 Oe. The piezoelectric effect is observed on all Bi0.8Sr0.2Fe0.8Ti0.2O3-2 wafers; especially, strong response was observed on the ⟨111⟩-oriented wafer. By optimizing the type and the concentration of doped ions, it is expected to obtain large-size doped BiFeO3single crystals with better magnetic and piezoelectric properties. |
| Databáze: |
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