Possible Transition in D-Valine and L-Valine Single Crystal Samples  

作　　者：YANG Hongshun LOU Fengming WANG Wenqing SHENG Xiangrong ZHUANG Zhizhong SHI Lei CHEN Zhaojia 

机构地区：[1]Department of Physics,University of Science and Technology of China,Hefei 230026 [2]Department of Technical Physics,Peking University,Beijing 100871 [3]The Center of Structure&Element Analysis,University of Science and Technology of China,Hefei 230026

出　　处：《Chinese Physics Letters》1995年第5期297-300,共4页中国物理快报（英文版）

摘　　要：The specific heats and temperature dependence of the x-ray powder diffractions for the D-valine and the L-valine single crystal samples have been studied.It is found that there is a specific heat jump at 272.0K for the D-dine samples but no jump at the same temperature for the L-dine sample.The lambda like transition means that the co-operative effect is involved in this transition.There is no crystal structure transition in the temperature range of 123-293K for the D-dine sample.The transition of the D-valine sample might be the possible D-L transition which is proposed by Abdus Salam.

关 键 词：transition. TRANSITION TRANSITION 

分 类 号：TG1[金属学及工艺—金属学]