HAN Yajie (1995-), female, Master. E-mail: han_yaj@163.com
The nano-crystalline ferroelectric films composed of BiFe0.95Mn0.05O3 and Bi0.9Nd0.1FeO3 were fabricated on the fluorine-doped tin oxide/glass substrates via the simple and cost-effective chemical solution deposition method combined with spin-coating and the subsequent layer-by-layer annealing technique. Microstructures and ferroelectric properties of the samples were investigated. Results show that either BiFe0.95Mn0.05O3 or Bi0.9Nd0.1FeO3 film has a single polycrystalline perovskite phase structure with fine and homogeneous grains and smooth surface in addition to a compact and dense structure. Both film samples exhibited well-saturated polarization-electric field hysteresis loops. Especially, the BiFe0.95Mn0.05O3 film showed more preferential upward polarization orientation and superior ferroelectric properties than the Bi0.9Nd0.1FeO3 film, which was reflected by a high remanent polarization (Pr) of 60 μC·cm-2 and stable ferroelectric responses to frequency and temperature in the ranges of 1 to 50 kHz and 25 to 200℃ in addition to retention capability of 1×103 seconds and fatigue endurance over 1×109 cycles.
| 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 |