From the view of group theory while the local interaction is ignored, the sublattice of molecules in HOIP can be treated as an effective field which introduces additional symmetry comparing with the parent inorganic ABX3perovskites56. The ferroelectric order can be built via improper ferroelectric me...
We report thermal expansion measurements using capacitance dilatometric methods on several polar and non-polar compounds of the langbeinite family, from liquid helium to room temperature. In K 2Mn 2(SO 4) 3 and Tl 2Cd 2(SO 4) 3 new therm... M Kahrizi,MO Steinitz - 《Solid State Commu...