A phenomenological model for the spontaneous exchange bias effect

@article{Bufaiccal2020APM,
  title={A phenomenological model for the spontaneous exchange bias effect},
  author={L. Bufaiccal and L. T. Coutrim and Eduardo M. Bittar and F. A. Garcia},
  journal={Journal of Magnetism and Magnetic Materials},
  year={2020},
  volume={512},
  pages={167048}
}
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6 Citations

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6 Citations

The Spontaneous Exchange Bias Effect on La1.5Ba0.5CoMnO6

La1.5Ba0.5CoMnO6 is a re-entrant cluster glass material exhibiting a robust negative exchange bias (EB) effect even after being cooled from an unmagnetized state down to low temperature in zero…

Tuning the spontaneous exchange bias effect with Ba to Sr partial substitution in La1.5(Sr0.5−xBax)CoMnO6

The spontaneous exchange bias (SEB) effect is a remarkable phenomenon recently observed in some reentrant spin-glass materials. Here we investigate the SEB in…

Absence of zero-field-cooled exchange bias effect in single crystalline La2−xAx CoMnO6 (A=Ca,Sr) compounds

Magnetic properties of A2BB'O6 (A = rare or alkaline earth ions; B,B' = transition metal ions) double perovskites are of great interest due to their potential spintronic applications. Particularly…

Griffiths phase and spontaneous exchange bias in La1.5Sr0.5CoMn0.5Fe0.5O6

The unidirectional anisotropy observed for LSCMFO is discussed and compared with those of resembling double-perovskite compounds, being plausibly explained in terms of its structural and electronic properties.

Magnetic and transport exchange bias after zero-field cooling in a spin glass

Exchange bias is usually observed in systems with an interface between a ferromagnet and an antiferromagnet. As a result of the competition between antiferromagnetic and ferromagnetic interactions at…

Tunable exchange bias in La1.5Sr0.5CoMnO6 double perovskite doped with nonmagnetic Ga ions

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Influence of spin glass-like magnetic relaxation on the zero-field-cooled exchange bias effect

The zero-field-cooled exchange bias (ZEB) effect is a remarkable phenomenon recently reported for some reentrant spin glass-like compounds. In this work, the time-evolution of magnetization is…

Giant zero field cooled spontaneous exchange bias effect in phase separated La1.5Sr0.5CoMnO6

We report a giant zero field cooled exchange bias (ZEB) effect (~0.65 T) in La1.5Sr0.5CoMnO6 sample. Magnetic study has revealed a reentrant spin glass ~90 K, phase separation to spin glass and…

Training-induced inversion of spontaneous exchange bias field on La 1.5 Ca 0.5 CoMnO 6

Superspin glass mediated giant spontaneous exchange bias in a nanocomposite of BiFeO3-Bi2Fe4O9.

All these rich features appear to be originating from the spontaneous symmetry breaking and consequent onset of unidirectional anisotropy driven by "superinteraction bias coupling" between the ferromagnetic core of Bi(2)Fe(4)O(9) and the canted antiferromagnetic structure of BiFeO(3) via superspin glass moments at the shell.

Exchange bias in nanostructures

Zero-field-cooled exchange bias effect in phase-segregated La2−xAxCoMnO6−δ (A=Ba,Ca,Sr;x=0,0.5)

In the zero-field-cooled exchange bias (ZEB) effect the unidirectional magnetic anisotropy is set at low temperatures even when the system is cooled in the absence of external magnetic field.…

Time Decay of the Remanent Magnetization in Spin-Glasses

The time decay of the thermoremanent magnetization (${\ensuremath{\sigma}}_{\mathrm{TRM}}$) has been measured in 1.0% Cu: Mn and 2.6% Ag: Mn spin-glasses. It is shown that…

Compensation temperatures and exchange bias in La 1.5 Ca 0.5 CoIrO 6

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…

and Bufaiçal

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