Condensed Matter > Materials Science
[Submitted on 29 Apr 2024]
Title:Unveiling the Impact of B-site Distribution on the Frustration Effect in Double Perovskite Ca2FeReO6 Using Monte Carlo Simulation and Molecular Field Theory
View PDFAbstract:This work systematically investigates the spin glass behavior of the double perovskite Ca2FeReO6. Building on previous studies, we have developed a formula to quantify the ions distribution at B-site, incorporating the next-nearest neighbor interactions. Employing molecular field theory and Monte Carlo simulations, the influence of various arrangements of two B-site ions on frustration effects was uncovered. B-site is segmented into a and b-site, defining the number of nearest neighbors from Fea to Feb (and vice versa) as Zx(Zy). The significant frustration effects occur when 1<Zx(or Zy)<3, with Zx is not equal to Zy and also when Zx(or Zy) ~ 3 while Zy(or Zx) ~ 4. All of these are reflected in the variations observed in ground state magnetization and the Thermal Energy Step relation to Zx and Zy. The model proposed in this work can be applied to most B-site disordered in perovskite systems and even to other chemically disordered in frustrated systems.
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