A Variety of Phase‐Transition Behaviors in a Niccolite Series of NH3(CH2)4NH3M(HCOO)32

摘要

A niccolite series of [bnH2 ²⁺][M(HCOO)3]2 (bnH2 ²⁺=1,4‐butyldiammonium) shows four kinds of metal‐dependent phase transitions, from high temperature para‐electric phases to low‐temperature ferro‐, antiferro‐, glass‐like, and para‐electric phases. The conformational flexibility of bnH2 ²⁺ and the different size, mass, and bonding character of the metal ion lead to various disorder‐order transitions of bnH2 ²⁺ in the lattice and relevant framework modulations, thus different phase transitions and dielectric responses. The magnetic members display a coexistence or combination of electric and magnetic orderings in the low‐temperature region.