Author: Michaela Zamponi

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AUTHOR

Michaela Zamponi

showing 7 related works from this author

Isostructural phase transition, quasielastic neutron scattering and magnetic resonance studies of a bistable dielectric ion-pair crystal [(CH3)2NH2]2…

2019

We have synthesised and characterised a novel organic–inorganic hybrid crystal, [(CH3)2NH2]2KCr(CN)6. The thermal DSC, TMA, DTG and DTA analyses indicate two solid-to-solid structural phase transitions (PTs). According to the X-ray diffraction experiments, the first PT at 220 K is isostructural, since it does not involve a change of the space group. This transition occurs between the states, where the (CH3)2NH2+ cations are orientationally disordered and ordered (frozen). The other reversible PT at 481 K leads to a melt-like phase similar to the one observed in plastic crystals or polar liquids. Dielectric spectroscopy has been used to characterise the switching properties of the dipole mom…

Phase transitionMaterials science010405 organic chemistryDielectric010402 general chemistry01 natural sciences0104 chemical sciencesIonDielectric spectroscopyInorganic ChemistryDipoleCrystallographyQuasielastic neutron scatteringPlastic crystalIsostructuralDalton Transactions

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Screening Ferroelastic Transitions in Switchable Cyano-Bridged Perovskites: [CH3C(NH2)2]2[KM(CN)6], M = Cr3+, Fe3+, Co3+. Crystal Structure Character…

2019

Here we report the dynamics of organic cations as guest molecules in the novel perovskite host framework. The novel switchable crystals from the coordination family [CH3C(NH2)2]2[KB″(CN)6] were con...

Materials science010405 organic chemistryGeneral ChemistryCrystal structureDielectric010402 general chemistryCondensed Matter Physics01 natural sciences0104 chemical sciencesCharacterization (materials science)CrystallographyQuasielastic neutron scatteringProton NMRMoleculeGeneral Materials SciencePerovskite (structure)Crystal Growth & Design

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