人工晶体学报2013，Vol.42Issue(2)：220-225,6.
LaFeO3单晶生长及其性能研究
Growth and Properties of LaFeO3 Crystals
摘要
Abstract
The LaFeO3 polycrystalline feed rod was prepared by sintering La2O3 and Fe2O3 powder at 1400 ℃ for 24 h. The LaFeO3 crystal grown by the floating zone method. The crystal preferred to crystallize along (100) direction. The X-ray rocking curve of the (100) crystal plane has a FWHM of 26 arcsec, confirming the high crystal quality of the sample. The thermal properties of LaFeO3 crystal during 298-773 K was tested. The specific heat of LaFeO3 crystal variation range was 0. 58-0. 76 J/(g·K) , The thermal diffusivity of LaFeO3 crystal variation range was 3.47-0. 85 mm2/s , The thermal conductivity of LaFeO3 crystal variation range was 13. 10-4. 21 W/(m-K). Discuss the influence of annealing heat treatment to infrared transmittance. The infrared transmittance reaches to about 65% of anneal at 700 ℃ for 48 h.关键词
浮区法/LaFeO3单晶/热学性能/近红外透过Key words
the floating zone method/LaFeO3 crystal/thermal properties/infrared transmittance分类
数理科学引用本文复制引用
朱雁风,刘维良,武安华,汪传勇,徐军..LaFeO3单晶生长及其性能研究[J].人工晶体学报,2013,42(2):220-225,6.基金项目
国家自然科学基金(51162015) （51162015）
