Electron paramagnetic resonance and electric characterization of a [CH₃NH₂NH₂][Zn(HCOO)₃] perovskite metal formate framework

Abstract

We present an EPR and electric characterization study of structural phase transitions in a novel methylhydrazinium formate framework.

Electron paramagnetic resonance study of ferroelectric phase transition and dynamic effects in a Mn2+doped [NH4][Zn(HCOO)3] hybrid formate framework

“…The simulated patterns are in a perfect agreement with the experiment verifying the structural model of AmZn and successful incorporation of the Mn 2+ ions in this compound. Note that a similar hyperfine coupling of formate protons was also observed for the related Mn 2+ 28,47 . This indicates that 1 H hyperfine coupling of about 2.6 MHz could be used as a fingerprint for a successful Mn 2+ ion incorporation into various formate frameworks.…”

Raman‐scattering studies of pressure‐induced phase transitions in perovskite‐like acetamidninium manganese formate

“…Dense metal–organic frameworks with short ligands such as HCOO − , N 3 − , CN − , SCN − , and N(CN) 2 − received a lot of interest in recent years due to their magnetic, optical, dielectric, ferroelectric, and multiferroic properties as well as structural phase transitions . Especially interesting sub‐group of these dense metal–organic frameworks are metal formate frameworks templated by protonated amines.…”

Quantum dynamics of Mn$^{2+}$ in dimethylammonium magnesium formate

“…However, despite this huge effort the precise nature of the phase transition in DMMgF is still obscured. Among many other experimental methods, electron paramagnetic resonance (EPR) spectroscopy is well-suited to study structural phase transitions 4,5,[10][11][12][13] . It used to detect the local environment of a paramagnetic center (e.g., local order parameter such as electric polarization) that can be influenced by the structural transformations.…”