FAN Xuemin (1995-), male, Master candidate. E-mail: lcdxfxm@126.com
0.935Bi1/2Na1/2TiO3-0.065BaTiO3-0.01Al6Bi2O12 (BNT-BT-AB) thin films were prepared via pulse laser deposition (PLD) on the substrates of Pt(111)/Ti/SiO2/Si (Pt) and LaNiO3 buffered Pt (111)/Ti/SiO2/Si (LNO/Pt), respectively. The morphology structure and electric properties of the films were investigated by X-ray diffraction, scanning electron microscopy, atomic force microscopy and ferroelectric analysis. The results show that the BNT-BT-AB film deposited on Pt exhibits a random orientation, the morphology of grain is cubic, the remnant polarization 2Pr is 20.38 μC/cm2, the dielectric tunability is 19% and the piezoelectric coefficient d33* is 130 pm/V. The BNT-BT-AB film deposited on LNO/Pt has a (100) preferred orientation, the surface morphology is flat, the residual polarization 2Pr is 21.25 μC/cm2, and the dielectric constant (700) and dielectric tenability (23%) are greater than those of the BNT-BT-AB film deposited on Pt, and the enhanced piezoelectric coefficient d33* is 150 pm/V.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |