Near room temperature dielectric transition in the perovskite formate framework [(CH3)2NH2][Mg(HCOO)3]

We report that the hybrid organic-inorganic compound [(CH3)2NH2][Mg(HCOO)3] shows a marked dielectric transition around Tt∼ 270 K, associated to a structural phase transition from SG R3[combining macron]c (centrosymmetric) to Cc (non-centrosymmetric). This is the highest Tt reported so far for a per...

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Published in:Physical chemistry chemical physics : PCCP 2012-06, Vol.14 (24), p.8498-8501
Main Authors: PATO-DOLDAN, B, SANCHEZ-ANDUJAR, M, GOMEZ-AGUIRRE, L. C, YANEZ-VILAR, S, LOPEZ-BECEIRO, J, GRACIA-FERNANDEZ, C, HAGHIGHIRAD, A. A, RITTER, F, CASTRO-GARCI, S, SENARIS-RODRIGUEZ, M. A
Format: Article
Language:English
Subjects:
Chemistry
Dielectrics
Exact sciences and technology
Formates
General and physical chemistry
Perovskites
Phase transformations
Physical chemistry
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Summary:We report that the hybrid organic-inorganic compound [(CH3)2NH2][Mg(HCOO)3] shows a marked dielectric transition around Tt∼ 270 K, associated to a structural phase transition from SG R3[combining macron]c (centrosymmetric) to Cc (non-centrosymmetric). This is the highest Tt reported so far for a perovskite-like formate that is thus a promising candidate to display electric order very close to room temperature.
ISSN:1463-9076
1463-9084
DOI:10.1039/c2cp40564d