| Abstrakt: |
While negative thermal expansion (NTE) is an unusual physical phenomenon, it's not rare anymore. Materials showing NTE contract upon heating and expand upon cooling. NTE materials are of huge importance from both scientific and technological point of view because of their potential applications. Many different types of materials have been discovered till date which show NTE behavior and have been studied in great details. Oxides, cyanides, metal– organic frameworks (MOFs), Prussian Blue analogs (PBAs) etc. are some classes of materials showing NTE, to name a few. Although there are some articles on negative thermal expansion behavior shown by different types of materials, a comprehensive review on NTE shown by PBAs are often missing. In this paper, we focus on and present a brief review of NTE behavior shown by PBAs. NTE coefficients along with crystal structures of the PBA materials, possible mechanisms and correlations are reviewed and discussed. [ABSTRACT FROM AUTHOR] |
