Optimized negative thermal expansion property in low-cost Mg2P2O7-based bulk material

Results in Physics

Andrea Sanson¹  Hengli Xie²  Erjun Liang³  Yige Du³  Qilong Gao³  Juan Guo³  Gaojie Zeng³  Yangming Hu³  Xiao Ren³ 

[1]Corresponding authors.

[2]Department of Physics and Astronomy, University of Padova, Padova I-35131, Italy

[3]Key Laboratory of Materials Physics of Ministry of Education, and School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China

关键词: Negative thermal expansion;    Pyrophosphate;    Phase transition;    Raman;   

DOI  :  

来源: DOAJ

【 摘 要 】

Negative thermal expansion (NTE) is an intriguing physical phenomenon, which is of great significance for the high precision application. In this work, we have realized to broaden the NTE temperature zone in Mg2P2O7-based bulk material by doping Cu atom on the Mg site. A joint study of Raman scattering and X-ray diffraction (XRD) indicates that there are double phases in the NTE temperature zone, and the NTE of Mg1.9Cu0.1P2O7 bulk material comes from the phase transition of α- and β-phase. The present work provides a way to optimize negative thermal expansion property in phase transition typed materials.

【 授权许可】

Unknown