Chem. J. Chinese Universities ›› 2020, Vol. 41 ›› Issue (3): 388.doi: 10.7503/cjcu20190631

• Review • Previous Articles     Next Articles

Negative Thermal Expansion in Prussian Blue Analogues

GAO Qilong1,LIANG Erjun1,XING Xianran2,CHEN Jun3,*   

  1. 1. International Laboratory for Quantum Functional Materials of Henan, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China
    2. Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing 100083, China
    3. School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China
  • Received:2019-12-06 Online:2020-03-10 Published:2020-01-07
  • Contact: Jun CHEN
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.21825102);† Supported by the National Natural Science Foundation of China(Nos.21905252);† Supported by the National Natural Science Foundation of China(Nos.21731001)

Abstract:

Negative thermal expansion(NTE) is a promising topic for solid state chemistry, physics, and materials science. Due to the unique lattice structure characteristics, many Prussian blue analogues(PBAs) compounds have been found to exhibit NTE in the last two decades. This review is introduced for the NTE compounds progress in the PBAs. From the studies on local structure and lattice structure, the NTE mechanism is reviewed to reveal the important transverse vibrational contribution of N and C atoms. Based on this NTE mechanism, thermal expansion can be designed by inserting guest ions or molecules to reduce the contribution of transverse vibration. Finally, the perspective of PBAs is discussed for the design of new NTE PBAs compounds and the potential applications in future.

Key words: Negative thermal expansion, Prussian blue analogues, Transverse vibration, Local structure, Low frequency phonon

CLC Number: 

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