Magnetization reversal study of Ni4-xZnxNb2O9compounds using Monte Carlo simulations

Elena Rufeil Fiori; Juan P Bolletta; Christine Martin; Antoine Maignan; Orlando V Billoni

doi:10.1088/1361-648X/acf986

Magnetization reversal study of Ni4-xZn_xNb₂O₉compounds using Monte Carlo simulations

J Phys Condens Matter. 2023 Sep 27;36(1). doi: 10.1088/1361-648X/acf986.

Authors

Elena Rufeil Fiori^{1

2}, Juan P Bolletta³, Christine Martin³, Antoine Maignan³, Orlando V Billoni^{1

2}

Affiliations

¹ Instituto de Física Enrique Gaviola (IFEG-CONICET), Ciudad Universitaria, 5000 Córdoba, Argentina.
² Facultad de Matemática, Astronomía, Física y Computación, Universidad Nacional de Córdoba, Ciudad Universitaria, 5000 Córdoba, Argentina.
³ Laboratoire CRISMAT, Normandie Univ, ENSICAEN, UNICAEN, CNRS, 14050 Caen, France.

PMID: 37703900
DOI: 10.1088/1361-648X/acf986

Abstract

The magnetization reversal (MR) of the layered Ni4-xZn_xNb₂O₉ferrimagnetic compounds, withx=0,0.25,0.50and 0.75, is studied in this work using Monte Carlo (MC) simulations and mean field (MF) calculations. First, we analyze the parent compound to set the parameters of our simulations; testing together MC simulations, MF calculations, and MR experiments reported by Bollettaet al(2022J. Appl. Phys.132153901). Then using two different approaches we fit the MR curves of the series of compounds finding a quite good agreement between MC simulations and the experiments. According to these results, Zn substitutions change the relative contribution to the magnetization of the different layers. Here we present two possible hypotheses to explain this effect; one involving a heterogeneous distribution of Zn²⁺among the layers, and the other related to distortions of the NiO₆octahedra.

Keywords: Monte Carlo; ferrimagnetism; magnetization reversal; mean field.