Static disorder in a perovskite mixed-valence metal–organic framework

Abstract

Effects of A-site and M-site substitutions on the structural properties of perovskite dimethylammonium iron formate.

Influence of Metal Defects on the Mechanical Properties of ABX3 Perovskite-Type Metal-formate Frameworks

“…The bulk modulus of GuaMn is 20.0(3) GPa, which is in good agreement with the value obtained over a larger pressure range: B 0 = 21.3 GPa . Compared to other formate-based perovskites, this value is slightly lower than for dimethylammonium metal formates ( B 0 = 21.3 GPa for M = Mn II and 26.3 GPa for M = Co II ), ,, but similar to that of [NH 2 NH 3 ]­Zn­(HCOO) 3 with B 0 = 19 GPa . The defective GuaFe 2/3 □ 1/3 features a lower bulk modulus of 14.3(2) GPa, which is comparable to the behavior of the heterometallic [C 2 H 5 NH 3 ]­K 0.5 Al 0.5 (HCOO) 3 .…”

Recent Progress of Multiferroicity and Magnetoelectric Effects in ABX3‐Type Perovskite Metal–Organic Frameworks

“…In addition, an interesting mixed valence compound [(DMA) 3 (H 2 O)][Fe II Fe III (HCOO) 12 ], in which part of DMA + is replaced by a neutral molecule such as H 2 O, showing the modified multiferroic properties through removing the neutral molecule in the framework. [ 84 ]…”

“…In addition, an interesting mixed valence compound [(DMA) 3 (H 2 O)][Fe II Fe III (HCOO) 12 ], in which part of DMA + is replaced by a neutral molecule such as H 2 O, showing the modified multiferroic properties through removing the neutral molecule in the framework. [84] In addition, large pressure is an alternative way to modify multiferroic properties when chemical doping has reached its GPa. E = 700 kV m −1 was persistently applied to the sample in the poling process from above the ferroelectric transition temperature T c to low temperature.…”