The magnetic field and voltage dependent electronic transport properties of EuWO1+xN2−x ceramics are reported. Large negative magnetoresistances are observed at low temperatures, up to 70% in the least doped (x=0.09) material. Non-Ohmic conduction emerges below the 12 K Curie transition. This is attributed to a microstructure of ferromagnetic conducting and antiferromagnetic insulating regions resulting from small spatial fluctuations in the chemical doping.
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Kusmartseva et al. (2009) studied this question.
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