Thermal Diffusivity of Double Perovskite Sr2FeMoO6 and Sm Doping Effects Studied by Photo-Thermal Deflection Technique
Sr2-xSmxFeMoO6 polycrystalline structure sample which structure is tested by X-ray diffraction adopts solid-sintering method for preparation. Photo-thermal deflection technique is used to study the thermal diffusivity of the material ;then a diagra m of curves illustrates the relationship between proportion of different mixing and the thermal diffusivity of the material. Based on the increasing degree of concentration of mixing Sm, thermal diffusivity of the sample undulates with the structural changes of Sr2FeMoO6. Different from that in bibliography , the essential reasons are revealed from these aspects: phonon, electron, spin and their interaction;and the proper mixing proportion of structural conversion of the sample Sr2-xSmxFeMoO6 occurring at the range of 10％ ～13％ is suggested. It proves that photo-thermal deflection technique is effective and practical in researching the structure of double perovskites mixing with lanthanide and its effect of electron mixing.
Sr2-zSmzFeMoO6 Photo-thermal deflection technique Thermal-diffusivity Double perovskites
Zhang Zhong Chen Kang Feng Xiupeng Li Shanliang Tao Yewei
Shool of Science University of Jinan, China No.106, Jiwei Road, Jinan, 250022 China Bureau of Education Shizhong district of Jinan, China No.162, weier Road, Jinan, 25001, China Shool of Science Nanjing University of posts and telecommunications, China No.66, Xinfan Road, Nanji
国际会议
沈阳
英文
322-324
2009-08-27（万方平台首次上网日期，不代表论文的发表时间）