LaSrMnCoO6: a new cubic double perovskite oxide |
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| Authors: | J. Androulakis N. Katsarakis N. Vouroutzis K. Chrissafis V. Perdikatsis |
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| Affiliation: | a Institute of Electronic Structure and Laser, Foundation for Research and Technology—Hellas, P.O. Box 1527, Vasilika Vouton, Heraklion, Crete 711 10, Greeceb Department of Chemistry, University of Crete, Leoforos Knossou, Heraklion, Crete 714 09, Greecec Department of Materials Science and Technology, University of Crete, P.O. Box 2208, Heraklion, Crete 710 03, Greeced Department of Physics, Aristotle University of Thessaloniki, Thessaloniki 54124, Greecee Department of Mineral Resources Engineering, Technical University of Crete, University Campus, Chania 73100, Greece |
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| Abstract: | Single-phase polycrystalline powder samples of the double perovskite oxide LaSrMnCoO6 were synthesized by the Pechini (citrate-gel) technique. The structural, magnetic and electrical properties of the obtained powders were investigated by X-ray diffraction, electron microscopy, dc magnetization, ac susceptibility and dc resistivity measurements. The crystal structure of the new compound was found to be cubic of space group  at room temperature. Below 225 K, the samples exhibit ferrimagnetic behavior with a spin-glass-like character. Resistivity measurements indicate semiconducting behavior with two different conductivity mechanisms: thermally activated behavior below 190 K and variable range hopping above 190 K. |
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| Keywords: | Double perovskite LaSrMnCoO6 Spin state transition Spin glass Co-Mn perovskite |
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