LaSrMnCoO6: A new cubic double perovskite oxide
Polychroniadis, E. K.
SourceJournal of Solid State Chemistry
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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 Fm3̄m at room temperature. Below 225K, 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 190K and variable range hopping above 190K. © 2003 Elsevier Science (USA). All rights reserved.