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Effects of Ru substitution for Mn on La0.7Sr0.3MnO3 perovskites
2007
Journal of Applied Physics
We report the investigations of crystal structure, electrical resistivity ͑͒, magnetization ͑M͒, x-ray photoelectron spectroscopy ͑XPS͒, specific heat ͑C P ͒, thermal conductivity ͑͒, and thermoelectric power ͑TEP͒ on La 0.7 Sr 0.3 ͑Mn 1−x Ru x ͒O 3 ͑LSMRO͒ compounds with x = 0 to 0.90. From the analyzes of crystal structure and magnetization measurements, it is inferred that Ru should have a mixed valence of Ru 3+ and Ru 4+ for LSMRO with low level of Ru substitution, and an additional mixed
doi:10.1063/1.2761690
fatcat:xt3ghyyuirbk5jl2vkl6zaey74