摘要
A niobate was synthesized by doping Bi3＋ in the ternary system BaO- N O- Nb2O5. The crystal structure was determined by X- ray powder diffraction,and it belongs to tetragonal tungsten bronze structure at room temperature with unit cell parameters a=1.24777 (2) nm,c=0.39266(1) nm,α =β =γ =90° .Measurements of dielectric properties indicate that phase transitions of Ba3NaBiNb10O30 from paraelectric to ferroelectric occurs at 400℃ ,which is lower than that of B NaNb5O30.
A niobate was synthesized by doping Bi3+ in the ternary system BaO-Na2O-Nb2O5, The crystal structure was determined by X-ray powder diffraction, and it belongs to tetragonal tungsten bronze structure at room temperature with unit cell parameters a = 1.24717 (2) nm c = 0.39266(1) nm, (alpha = beta = gamma = 90 degrees. Measurements of dielectric properties indicate that phase transitions of Ba3NaBiNb10O30 from paraelectric to ferroelectric occurs at 400 degreesC, which is lower than that of Ba2NaNb5O30.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
2001年第5期457-459,共3页
Acta Physico-Chimica Sinica
基金
国家自然科学基金! (50002007)
国际衍射数据中心(ICDD)Grant- in- Aid基金 ! (98- 10)资助项目&&
