Abstract:In this work, we present detailed 57 Fe Mössbauer spectroscopy investigations of (Co 0.97 57 Fe 0.03 ) 4 Nb 2 O 9 compound to study its possible magnetic structures. We have shown that the previously reported magnetic structures can not satisfactorily describe our low temperature Mössbauer spectra. Therefore, in combination with theoretical calculations, we have proposed a modulated helicoidal magnetic structure that can be used to simulate the whole series of our low temperature Mössbauer spectra. Our result… Show more
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