312 citations · 883 across the 12 of their papers we have counts for
6 papers · 1 filter
Structural Chemistry of Layered Lead Halide Perovskites Containing Single Octahedral Layers
Philip Lightfoot, Jason A. McNulty
We present a comprehensive review of the structural chemistry of hybrid lead halides of stoichiometry APbX4, A2PbX4 or AAPbX4, where A and A are organic ammonium cations and X = Cl…
Complex Octahedral Tilt Phases in the Ferroelectric Perovskite System LiNaNbO
Charlotte Dixon, Philip Lightfoot
High-temperature phase behavior in the system LixNa1-xNbO3 has been studied by using high-resolution powder neutron diffraction. Each of the three compositions studied in the Na-ri…
Ferrielectricity in an Organic Ferroelectric
James F. Scott, Finlay D. Morrison, Rebecca Clulow +7
We report ferrielectricity in a single-phase crystal, TSCC -- tris-sarcosine calcium chloride [(CH3NHCH2COOH)3CaCl2]. Ferrielectricity is well known in smectic liquid crystals but…
The High Temperature Phase Transitions of Hexagonal YMnO3
Alexandra S. Gibbs, Kevin S. Knight, Philip Lightfoot
We report a detailed high-resolution powder neutron diffraction investigation of the structural behaviour of the multiferroic hexagonal polymorph of YMnO3 between room temperature…
The beta to gamma (insulator-metal) transition in BiFeO3
Donna C. Arnold, Kevin S. Knight, Gustau Catalan +4
High temperature powder neutron diffraction experiments have been conducted around the reported beta-gamma, insulator-metal phase transition (~ 930 C) in BiFeO3. The results demons…
The ferroelectric-paraelectric phase transition in BiFeO3: crystal structure of the orthorhombic beta-phase
Donna C. Arnold, Kevin S. Knight, Finlay D. Morrison +1
A detailed investigation using variable temperature powder neutron diffraction demonstrates that BiFeO3 undergoes a phase transition from the ferroelectric alpha phase (rhombohedra…