Physical properties of disordered double-perovskite Ca2−xLaxFeIrO6

In this work we have synthesized polycrystalline samples for the series of double-perovskite Ca2−xLaxFeIrO6. Their structural and magnetic properties were investigated using experiments of magnetic susceptibility and x-ray powder diffraction. The Ca2−xLaxFeIrO6 compounds form in a monoclinic structu...

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Published in:Journal of applied physics 2008-04, Vol.103 (7)
Main Authors: Bufaiçal, L., Mendonça Ferreira, L., Lora-Serrano, R., Agüero, O., Torriani, I., Granado, E., Pagliuso, P. G., Caytuero, A., Baggio-Saitovich, E.
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cited_by cdi_FETCH-LOGICAL-c194t-43f803d051e2f2adc10c4457326498dbb0e44426443fe5d4d069a245a2beff0e3
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container_issue 7
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container_title Journal of applied physics
container_volume 103
creator Bufaiçal, L.
Mendonça Ferreira, L.
Lora-Serrano, R.
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Granado, E.
Pagliuso, P. G.
Caytuero, A.
Baggio-Saitovich, E.
description In this work we have synthesized polycrystalline samples for the series of double-perovskite Ca2−xLaxFeIrO6. Their structural and magnetic properties were investigated using experiments of magnetic susceptibility and x-ray powder diffraction. The Ca2−xLaxFeIrO6 compounds form in a monoclinic structure, space group P21∕n, with the presence of significant Fe∕Ir cationic disorder. Interestingly, our results indicate a change in the nature of the microscopic magnetic interaction induced by La doping, where the system seems to evolve from antiferromagnetic in the extremities of the series, x=0 (TN≈75K) and x=2.0, to ferrimagnetic in intermediate regions of the series. However, due to significant presence of disorder and strong competition between ferromagnetic and antiferromagnetic interactions, the saturation of the magnetization was not found to be larger than 0.1μB∕Fe.
doi_str_mv 10.1063/1.2830719
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title Physical properties of disordered double-perovskite Ca2−xLaxFeIrO6
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