supported by the National Basic Research Program of China(2009CB623701,2011CB606406);the National Natural Science Foundation of China(51371102,51390475,51071092,11374174,and 51390471);the Foundation for the Author of National Excellent Doctoral Dissertation of China;the Program for New Century Excellent Talents in University;the Scientific Foundation for Returned Overseas Chinese Scholars,Ministry of Education
Lattice defects are unavoidable structural units in materials and play an important role in determining material properties.Compared with the periodic structure of crystals,the atomic configurations of the lattice def...
supported by the National Basic Research Program of China (2011CB606406, 2009CB623701);the National Natural Science foundation of China (51071092, 50971015, 51371102, 51371031);Innovation Method Program (2010IM031300);Program for New Century Excellent Talents in University, and Scientific Foundation for Returned Overseas Chinese Scholars, Ministry of Education
Single-crystal elastic constants and mechanical hardness of covalent and ionic crystals have been studied using first-principles calculations.The results show that the hardness is dominated by the softest elastic mode...