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Near room temperature dielectric transition in the perovskite formate framework [(CH(3))(2)NH(2)][Mg(HCOO)(3)].
Journal article published in 2012 by
B. Pato-Doldán 
,
M. Sánchez-Andújar ,
Lc C. Gómez-Aguirre,
S. Yáñez-Vilar ,
J. López-Beceiro ,
C. Gracia-Fernández,
Aa A. Haghighirad,
F. Ritter,
S. Castro-García,
M. A. Señarís-Rodríguez
,
M. Sánchez-Andújar ,
Lc C. Gómez-Aguirre,
S. Yáñez-Vilar ,
J. López-Beceiro ,
C. Gracia-Fernández,
Aa A. Haghighirad,
F. Ritter,
S. Castro-García,
M. A. Señarís-Rodríguez
Abstract
We report that the hybrid organic-inorganic compound [(CH(3))(2)NH(2)][Mg(HCOO)(3)] shows a marked dielectric transition around T(t) ∼ 270 K, associated to a structural phase transition from SG R3[combining macron]c (centrosymmetric) to Cc (non-centrosymmetric). This is the highest T(t) reported so far for a perovskite-like formate that is thus a promising candidate to display electric order very close to room temperature.