Structural, electronic and magnetic properties of La$_{1.5}$Ca$_{0.5}$(Co$_{0.5}$Fe$_{0.5}$)IrO$_6$ double perovskite

L. Bufaiçal; M. A. V. Heringer; J. R. Jesus; A. Caytuero; C. Macchiutti; E. M. Bittar; E. Baggio-Saitovitch

doi:10.1016/j.jmmm.2022.169408

paper

Structural, electronic and magnetic properties of La $_{1.5}$ Ca $_{0.5}$ (Co $_{0.5}$ Fe $_{0.5}$ )IrO $_{6}$ double perovskite

arXiv:2205.04778 · doi:10.1016/j.jmmm.2022.169408

Abstract

In this work, we report the synthesis and investigation of structural, electronic, and magnetic properties of La $_{1.5}$ Ca $_{0.5}$ (Co $_{0.5}$ Fe $_{0.5}$ )IrO $_{6}$ . Our polycrystalline sample forms as a single-phase double perovskite in monoclinic $P 2_{1} / n$ space group. Co and Ir are most likely in bivalent and tetravalent oxidation states, respectively, while Mossbauer spectroscopy indicates that Fe is in a trivalent state. The ac and dc magnetization data suggest a ferrimagnetic behavior resulting from the presence of two antiferromagnetic sublattices at Co/Fe and Ir sites. The large coercive field H_C $≃$ 32 kOe observed at 10 K, comparable to that of other double perovskites of interest for hard magnets, is discussed in terms of the structural distortion and the spin and orbital magnetic moments of the transition metal ions.

arXiv comment15 pages, 5 figures

Structural, electronic and magnetic properties of La1.5​Ca0.5​(Co0.5​Fe0.5​)IrO6​ double perovskite

Abstract

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Structural, electronic and magnetic properties of La $_{1.5}$ Ca $_{0.5}$ (Co $_{0.5}$ Fe $_{0.5}$ )IrO $_{6}$ double perovskite