典型文献
Isotropic negative thermal expansion and its mechanism in tetracyanidoborate salt CuB(CN)4
文献摘要：
The control of thermal expansion is essential in applications where thermal stability is required from fiber optics coatings,high performance fuel cell cathodes to tooth fillings.Negative thermal expansion(NTE)materials,although rare,are fundamental for this purpose.This work focuses on studying tetracyanidoborate salt CuB(CN)4,an interesting cubic-structure material that displays large isotropic NTE.A joint study of synchrotron x-ray diffraction,temperature-dependent Raman spectroscopy,and lattice dynamics calculations was conducted,showing that not only low-frequency optical modes(transverse thermal vibrations of N and C atoms)but also the acoustic modes(the vibrations of Cu atoms as a collective torsion of the neighboring atoms),contribute to NTE.As a result,new insights were gained into the NTE mechanism of CuB(CN)4 and related framework materials.
文献关键词：
中图分类号：
作者姓名：
Chunyan Wang;Qilong Gao;Andrea Sanson;Yu Jia
作者机构：
Key Laboratory of Materials Physics of Ministry of Education,International Laboratory for Quantum Functional Materials of Henan,and School of Physics and Microelectronics,Zhengzhou University,Zhengzhou 450052,China;Key Laboratory of Special Functional Materials of Ministry of Education,and School of Materials Science and Engineering,Henan University,Kaifeng 475004,China;Key Laboratory for Quantum Materials and Center for Topological Functional Materials,Henan University,Kaifeng 475004,China;Department of Physics and Astronomy,University of Padova,Padova I-35131,Italy
文献出处：
引用格式：
[1]Chunyan Wang;Qilong Gao;Andrea Sanson;Yu Jia-.Isotropic negative thermal expansion and its mechanism in tetracyanidoborate salt CuB(CN)4)[J].中国物理B（英文版）,2022(06):110-114
A类：
tetracyanidoborate
B类：
Isotropic,negative,thermal,expansion,its,mechanism,salt,CuB,CN,control,essential,applications,where,stability,required,from,fiber,optics,coatings,high,performance,fuel,cell,cathodes,tooth,fillings,Negative,NTE,materials,although,rare,fundamental,this,purpose,This,focuses,studying,interesting,cubic,structure,that,displays,large,isotropic,joint,synchrotron,ray,diffraction,temperature,dependent,Raman,spectroscopy,lattice,dynamics,calculations,was,conducted,showing,not,only,low,frequency,optical,modes,transverse,vibrations,atoms,also,acoustic,collective,torsion,neighboring,contribute,result,new,insights,were,gained,into,related,framework
AB值：
0.638748
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