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Room-temperature ferroelectricity in diisopropylammonium bromide.
Autorzy
Rok wydania
2013
Czasopismo
Numer woluminu
15
Strony
940-944
DOI
10.1039/c2ce26580j
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
A room-temperature ferroelectric, diisopropylammonium bromide (DPB), with dielectric constant ε ≈ 12000 and a clear hysteresis loop at Tc = 425 K is reported. At 417 K DPB undergoes the irreversible phase transition from nonpolar orthorhombic P212121 to the ferroelectric monoclinic phase (P21) and subsequently, at 425 K, to the paraelectric prototype phase (P21/m). The molecular mechanism of the paraelectric-ferroelectric transition is ascribed to the ‘order-disorder’ behaviour of the diisopropylammonium cations.
Adres publiczny
http://dx.doi.org/10.1039/c2ce26580j
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