Nitride Tuning of Magnetic Frustration in the Double Perovskite Ba₂MnWO₆.

ABSTRACT: The new double perovskite oxynitride Ba₂MnWO_4.42N_1.58 has been obtained by topochemical ammonolysis at 700 °C of B-site ordered Ba₂MnWO₆ using a high NH₃ flow rate of 600 cm³/min. The relatively low synthesis temperature hinders the cation mobility, allowing the order of Mn and W cations of the precursor oxide to be unperturbed in the oxynitride. Synchrotron X-ray diffraction, electron diffraction, and neutron diffraction indicate that Ba₂MnWO_4.42N_1.58 crystallizes in the Fm3̅m space group with a larger parameter of 8.2434(5) Å compared to Ba₂MnWO₆ [8.20337(1) Å]. Magnetic susceptibility measurements show that Ba₂MnWO_4.42N

SUBMITTER: Oro-Sole J 

PROVIDER: S-EPMC11925330 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature