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Polycrystalline SrLaCoO 4 with tetragonal K 2 NiF 4 structure were prepared by a solid-state reaction process, and their magnetic properties and magnetoresistance effect were investigated systematically. The paramagnetic–ferromagnetic transition occurred at ∼250K. The curves of magnetization versus magnetic field at 150, 200 and 273K showed soft ferromagnetic, super paramagnetic...
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