GROWTH AND DIELECTRIC PROPERTIES OF TA2O5 SINGLE CRYSTAL FIBERS

摘要：

Single crystal fibers of Ta2O5 have been grown by the Laser Heated Pedestal Growth (LHPG) technique up to several cm in length with diameters of 1.1 mm. The as grown crystal, characterized by X-ray diffraction, dielectric measurement and thermal expansion analysis, has Htri-Ta2O5 symmetry. Dielectric permittivity, loss tangent along 001 and 110 direction were investigated over the temperature range from -180°C to 100°C. Large dielectric anisotropy in Ta2O5 single crystal was observed. At room temperature, the dielectric permittivity (1 MHz) along the 001 is 33.2, while that along the 110 is 231.9. The reason of dielectric enhancement in Ta2O5 crystal grown by LHPG was also discussed.

关键词： LHPG single crystal fibers Ta2O5 dielectric properties

作者: Yijian Jiang Ruyan Guo A. S. Bhalla

作者单位: Institute of Laser Engineering, Beijing University of Technology, Beijing 100022, P. R. China Materials Research Laboratory, The Pennsylvania State University, University Park, PA 16802, USA

会议类型: 国际会议

会议名称: 第三届太平洋国际激光与光学应用会议(PICALO 2008)

会议地点: 北京

会议语种:英文

页码: 609-612

在线出版日期: 2008-04-16（万方平台首次上网日期，不代表论文的发表时间）