Area negative thermal expansion in a beryllium borate LiBeBO3 with edge sharing tetrahedra

Wenjiao Yao; Xingxing Jiang; Rongjin Huang; Wei Li; Chuanjun Huang; Zheshuai Lin; Laifeng Li; Chuangtian Chen

doi:10.1039/C4CC04879B

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Area negative thermal expansion in a beryllium borate LiBeBO₃ with edge sharing tetrahedra†

Wenjiao Yao,‡^ab Xingxing Jiang,‡^ab Rongjin Huang,*^c Wei Li,^d Chuanjun Huang,^c Zheshuai Lin,*^a Laifeng Li^c and Chuangtian Chen^a

Author affiliations

* Corresponding authors

^a Beijing Center for Crystal R&D, Key Lab of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry (TIPC), Chinese Academy of Sciences (CAS), Beijing 100190, PR China
E-mail: zslin@mail.ipc.ac.cn

^b University of Chinese Academy of Sciences, Beijing 100049, PR China

^c Key Laboratory of Cryogenics, TIPC, CAS, Beijing, PR China
E-mail: huangrongjin@mail.ipc.ac.cn

^d Department of Materials Science and Metallurgy, University of Cambridge, Cambridge CB3 0FS, UK

Abstract

A very rare area negative thermal expansion phenomenon is observed in a newly discovered alkali beryllium borate LiBeBO₃, which is characterized by [BeBO₃]_∞ double layers intraconnected by edge-sharing BeO₄ tetrahedra. This unusual thermal behavior is attributed to the combined vibrational effects of the abnormal Be–O structures and Li⁺ cations.

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Article information

DOI: https://doi.org/10.1039/C4CC04879B
Article type: Communication
Submitted: 26 Jun 2014
Accepted: 09 Sep 2014
First published: 09 Sep 2014

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Chem. Commun., 2014,50, 13499-13501

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Area negative thermal expansion in a beryllium borate LiBeBO₃ with edge sharing tetrahedra

W. Yao, X. Jiang, R. Huang, W. Li, C. Huang, Z. Lin, L. Li and C. Chen, Chem. Commun., 2014, 50, 13499 DOI: 10.1039/C4CC04879B

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