Issue 73, 2020

Negative and zero thermal expansion in α-(Cu2−xZnx)V2O7 solid solutions

Abstract

Negative or zero thermal expansion (NTE or ZTE) of materials is intriguing for controllable thermal expansion. We report a series of orthorhombic α-Cu2−xZnxV2O7 (x = 0, 0.1, 0.2), in which the volumetric coefficients of thermal expansion are successfully tuned from −10.19 × 10−6 K−1 to −1.58 × 10−6 K−1 in the temperature range of 100–475 K by increasing the content of Zn2+. It has been revealed that the transverse vibrations of oxygen bonded with vanadium are dominant in the contraction of the bc plane, leading to the overall volume NTE in α-Cu2V2O7. The introduction of Zn2+ densifies the crystal structure, which is presumed to suppress the space of transverse vibrations and results in the ZTE in α-Cu1.8Zn0.2V2O7. This work presents an effective method to realize ZTE in anisotropic framework systems.

Graphical abstract: Negative and zero thermal expansion in α-(Cu2−xZnx)V2O7 solid solutions

Supplementary files

Article information

Article type
Communication
Submitted
30 Jun 2020
Accepted
03 Aug 2020
First published
03 Aug 2020

Chem. Commun., 2020,56, 10666-10669

Author version available

Negative and zero thermal expansion in α-(Cu2−xZnx)V2O7 solid solutions

N. Shi, A. Sanson, A. Venier, L. Fan, C. Sun, X. Xing and J. Chen, Chem. Commun., 2020, 56, 10666 DOI: 10.1039/D0CC04505E

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements