Calculation of Magnetization and Magnetic Susceptibility Close to Magnetic Phase Transitions in (CH3)2NH2FeIIINiII(HCOO)6 and (CH3)2NH2FeIIICuII(HCOO)6


YURTSEVEN H. H. , Tari O.

Journal of Low Temperature Physics, cilt.202, ss.145-159, 2021 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 202
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1007/s10909-020-02530-2
  • Dergi Adı: Journal of Low Temperature Physics
  • Sayfa Sayıları: ss.145-159

Özet

We study the temperature and magnetic field dependence of the magnetization (M) and the inverse susceptibility (chi(-1)) in the metal-organic frameworks, in particular, for (CH3)(2)(NH2FeNiII)-Ni-III(HCOO)(6) (DMFeNi) and (CH3)(2)(NH2FeCuII)-Cu-III(HCOO)(6) (DMFeCu) close to their magnetic phase transitions. The Landau phenomenological model is employed to analyze the experimental data for the M(T, H) from the literature and to calculate chi(-1)(T, H) of DMFeNi and DMFeCu. Our results indicate that the thermodynamic model studied explains adequately the observed behavior of M(T, H) for DMFeNi and DMFeCu, which exhibit a weakly first-order (or nearly second order) magnetic phase transition.