The phase transition in copper pyrophosphate, Cu2P2O7: Insights and implications for the interpretation of negative thermal expansion
Highlights Cu 2 P 2 O 7 has an extraordinarily large negative coefficient of thermal expansion It is shown that this arises from the existence of a displacive phase transition Analysis of the thermodynamics explains why the effect is so large in this material The analysis also explains why the negative thermal expansion increases under pressure
Authors
- Martin T. Dove (ORCID: https://orcid.org/0000-0002-8030-1457)
- Naike Shi (ORCID: https://orcid.org/0000-0002-8871-5021)
Institutions
- Queen Mary University of London (GB)
- Nanyang Technological University (SG)
- Guizhou University (CN)
- Sichuan University (CN)
- University of Science and Technology Beijing (CN)
Publication Details
- Journal
- Matter
- Published
- 2025-05-28
- DOI
- https://doi.org/10.1016/j.matt.2025.102149
- Citations
- 4
- Primary Topic
- Thermal Expansion and Ionic Conductivity
- Type
- article
- Field-Weighted Citation Impact
- 2.07
Funders
- National Natural Science Foundation of China
- University of Science and Technology Beijing
- Fundamental Research Funds for the Central Universities