42 citations · 242 across the 14 of their papers we have counts for
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Essential aspects of the spontaneous exchange bias effect
L. Bufaiçal, E. M. Bittar
Here, we present a review of the phenomenology of the spontaneous exchange bias effect, a phenomenon in which some materials exhibit unidirectional magnetic anisotropy even without…
Tuning the spontaneous exchange bias effect in La1.5Sr0.5CoMnO6 with sintering temperature
C. Macchiutti, J. R. Jesus, F. B. Carneiro +8
Here, we present a study of the influence of microstructure on the magnetic properties of polycrystalline samples of the La1.5Sr0.5CoMnO6 double perovskite, with primary attention…
Structural, electronic and magnetic properties of LaCa(CoFe)IrO double perovskite
L. Bufaiçal, M. A. V. Heringer, J. R. Jesus +4
In this work, we report the synthesis and investigation of structural, electronic, and magnetic properties of LaCa(CoFe)IrO. Our polycrystalline…
The spontaneous exchange bias effect in La2-xCaxCoMnO6 series
J. R. Jesus, L. Bufaiçal, E. M. Bittar
Structural, electronic and magnetic properties of polycrystalline La2-xCaxCoMnO6 (0 x 0.75) compounds are investigated by x-ray diffraction and magnetometry. All the…
Absence of zero-field-cooled exchange bias effect in single crystalline La2-xAxCoMnO6 (A = Ca, Sr) compounds
C. Macchiutti, J. R. Jesus, F. B. Carneiro +4
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 applicatio…
Tuning the spontaneous exchange bias effect with Ba to Sr partial substitution in La(SrBa)CoMnO
M. Boldrin, A. G. Silva, L. T. Coutrim +4
The spontaneous exchange bias (SEB) effect is a remarkable phenomenon recently observed in some reentrant spin-glass materials. Here we investigate the SEB in La(Sr$_{0.5-x…
The effect of structural and magnetic disorder on the 3-5 exchange interactions of LaCaCoIrO
L. Bufaiçal, E. Sadrollahi, F. J. Litterst +7
The delicate balance between spin-orbit coupling, Coulomb repulsion and crystalline electric field interactions observed in Ir-based oxides is usually manifested as exotic magnetic…
The spontaneous exchange bias effect on LaBaCoMnO
M. Boldrin, L. T. Coutrim, L. Bufaiçal
LaBaCoMnO is a re-entrant cluster glass material exhibiting a robust negative exchange bias (EB) effect even after being cooled from an unmagnetized state dow…
Training-induced inversion of spontaneous exchange bias field on La1.5Ca0.5CoMnO6
L. Bufaical, R. Finkler, L. T. Coutrim +5
In this work we report the synthesis and structural, electronic and magnetic properties of La1.5Ca0.5CoMnO6 double-perovskite. This is a re-entrant spin cluster material which exhi…
Compensation temperatures and exchange bias in La1.5Ca0.5CoIrO6
L. T. Coutrim, E. M. Bittar, F. Stavale +8
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 reentra…
Investigation of element-specific and bulk magnetism, electronic and crystal structures of La{0.70}Ca{0.30}Mn{1-x}Cr{x}O{3}
H. Terashita, J. C. Cezar, F. M. Ardito +2
The magnetic interactions in La{0.70}Ca{0.30}Mn{1-x}Cr{x}O{3} (x = 0.15, 0.50 and 0.70) are investigated by x-ray absorption spectroscopy (XAS), x-ray magnetic circular dichroism (…