Issue 1, 2017

Growth of centimeter-sized [(CH3)2NH2][Mn(HCOO)3] hybrid formate perovskite single crystals and Raman evidence of pressure-induced phase transitions

Abstract

[(CH3)2NH2][Mn(HCOO)3], an organic–inorganic perovskite-like hybrid multiferroic, shows promising aspirations for the next generation magnetic storage devices, light-weight chips, optical devices, etc. However, the growth of centimeter-sized large single crystals of [(CH3)2NH2][Mn(HCOO)3] remains a big challenge. Herein, we report a facile, environmentally friendly approach to grow [(CH3)2NH2][Mn(HCOO)3] single crystals whose size could be up to 10 × 9.61 × 3.6 mm, the biggest one ever reported to date. In addition, high-pressure Raman spectra of the material exhibited the existence of three high-pressure polymorphs at 2.1, 4.1, and 6.7 GPa. The high-pressure phase transitions are associated with highly distorted frameworks, and the phase under a pressure larger than 6.7 GPa induces large structural changes in the hydrogen bond-related interactions, which is different from the highly ordered low-temperature monoclinic ferroelectric phase (Cc) observed at ambient pressure. Our studies may shed light on the phase transition mechanisms of the multiferroic metal–organic framework [(CH3)2NH2][Mn(HCOO)3] under high pressures.

Graphical abstract: Growth of centimeter-sized [(CH3)2NH2][Mn(HCOO)3] hybrid formate perovskite single crystals and Raman evidence of pressure-induced phase transitions

Supplementary files

Article information

Article type
Paper
Submitted
06 Sep 2016
Accepted
14 Nov 2016
First published
15 Nov 2016

New J. Chem., 2017,41, 151-159

Growth of centimeter-sized [(CH3)2NH2][Mn(HCOO)3] hybrid formate perovskite single crystals and Raman evidence of pressure-induced phase transitions

L. Xin, Z. Fan, G. Li, M. Zhang, Y. Han, J. Wang, K. P. Ong, L. Qin, Y. Zheng and X. Lou, New J. Chem., 2017, 41, 151 DOI: 10.1039/C6NJ02798A

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