Compensation temperatures and exchange bias in La1.5Ca0.5CoIrO6

Abstract

We report on the study of magnetic properties of the La1.5Ca0.5CoIrO6 double perovskite. Via ac magnetic susceptibility we have observed evidence of weak ferromagnetism and reentrant spin glass behavior on an antiferromagnetic matrix. Regarding the magnetic behavior as a function of temperature, we have found that the material displays up to three inversions of its magnetization, depending on the appropriate choice of the applied magnetic field. At low temperature the material exhibit exchange bias effect when it is cooled in the presence of a magnetic field. Also, our results indicate that this effect may be observed even when the system is cooled at zero field. Supported by other measurements and also by electronic structure calculations, we discuss the magnetic reversals and spontaneous exchange bias effect in terms of magnetic phase separation and magnetic frustration of Ir4+ ions located between the antiferromagnetically coupled Co ions.

arXiv comment10 pages, 8 figures and supplemental material

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Cited by in corpus (17)

• B-site spin-state and anti-site disorder driven multiple-magnetic phases: Griffiths phase, re-entrant cluster glass and exchange bias in double perovskite Pr${}_2$CoFeO${}_6$
• The zero-field-cooled exchange bias effect in phase-segregated La${}_{2-x}$A${}_x$CoMnO${}_{6-\delta }$ (A = Ba, Ca, Sr; x = 0, 0.5)
• Influence of spin glass-like magnetic relaxation on the zero-field-cooled exchange bias effect
• Unraveling the magnetic interactions and spin state in insulating Sr${}_{2-x}$La${}_x$CoNbO${}_6$
• Training-induced inversion of spontaneous exchange bias field on La1.5Ca0.5CoMnO6
• Giant Exchange Bias in the Single-layered Ruddlesden-Popper Perovskite SrLaCo0.5Mn0.5O4
• A phenomenological model for the spontaneous exchange bias effect
• Griffiths phase and spontaneous exchange bias in La${}_{1.5}$Sr${}_{0.5}$CoMn${}_{0.5}$Fe${}_{0.5}$O${}_6$
• The effect of structural and magnetic disorder on the 3$d$-5$d$ exchange interactions of La${}_{2-x}$Ca${}_x$CoIrO${}_6$
• Essential aspects of the spontaneous exchange bias effect
• Large structure-dependent room temperature exchange bias in self-assembled BiFeO3 nanoparticles
• The spontaneous exchange bias effect on La${}_{1.5}$Ba${}_{0.5}$CoMnO${}_6$
• Structural, electronic and magnetic properties of La${}_{1.5}$Ca${}_{0.5}$(Co${}_{0.5}$Fe${}_{0.5}$)IrO${}_6$ double perovskite
• Absence of zero-field-cooled exchange bias effect in single crystalline La2-xAxCoMnO6 (A = Ca, Sr) compounds
• The 3d and 5d electronic structures and orbital hybridization in Ba- and Ca-doped La2CoIrO6 double perovskite
• Enhanced magnetism and suppressed magnetoelastic coupling induced by electron doping in Ca${}_{1-x}$Y${}_x$MnReO${}_6$
• The effect of pressure on La${}_{1.5}$Ca${}_{0.5}$CoIrO${}_6$ re-entrant spin-glass