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

被引：24

作者：

Shi, Naike ^{[1
,2
]}

Sanson, Andrea ^{[3
]}

Venier, Alessandro ^{[3
]}

Fan, Longlong ^{[4
,5
]}

Sun, Chengjun ^{[5
]}

Xing, Xianran ^{[1
,2
]}

Chen, Jun ^{[1
,2
]}

机构：

[1] Univ Sci & Technol Beijing, Beijing Adv Innovat Ctr Mat Genome Engn, Beijing 100083, Peoples R China

[2] Univ Sci & Technol Beijing, Dept Phys Chem, Beijing 100083, Peoples R China

[3] Univ Padua, Dept Phys & Astron, I-35131 Padua, Italy

[4] Tianjin Normal Univ, Coll Phys & Mat Sci, Tianjin 300387, Peoples R China

[5] Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA

来源：

CHEMICAL COMMUNICATIONS | 2020年 / 56卷 / 73期

基金：

中国国家自然科学基金;

关键词：

ELECTRICAL-PROPERTIES; TRANSITION; MN; FE; NI; CO;

D O I：

10.1039/d0cc04505e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Negative or zero thermal expansion (NTE or ZTE) of materials is intriguing for controllable thermal expansion. We report a series of orthorhombic alpha-Cu2-xZnxV2O7(x= 0, 0.1, 0.2), in which the volumetric coefficients of thermal expansion are successfully tuned from -10.19 x 10(-6)K(-1)to -1.58 x 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 thebcplane, leading to the overall volume NTE in alpha-Cu2V2O7. The introduction of Zn(2+)densifies the crystal structure, which is presumed to suppress the space of transverse vibrations and results in the ZTE in alpha-Cu1.8Zn0.2V2O7. This work presents an effective method to realize ZTE in anisotropic framework systems.

引用

收藏

页码：10666 / 10669

页数：4

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