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Issue 1, 2017
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Growth of centimeter-sized [(CH3)2NH2][Mn(HCOO)3] hybrid formate perovskite single crystals and Raman evidence of pressure-induced phase transitions

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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

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Publication details

The article was received on 06 Sep 2016, accepted on 14 Nov 2016 and first published on 15 Nov 2016


Article type: Paper
DOI: 10.1039/C6NJ02798A
Citation: New J. Chem., 2017,41, 151-159

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    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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