Magnetic ordering in Gd5Ir2Bi and Gd5Ir2Sb
D. H. Ryan, Nadejda Mas, Rasa Rejali and 5 more
AIP Advances · 2016
doi:10.1063/1.4944770 (opens in a new tab)
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Abstract
155Gd Mössbauer spectroscopy and neutron powder diffraction have been used to study magnetic ordering in Gd5Ir2Bi and Gd5Ir2Sb. Despite the hyperfine fields (Bhf) at the two Gd sites differing by more than a factor of two for both compounds, the moments derived from neutron diffraction are essentially equal in Gd5Ir2Bi. This implies an unusual departure from the commonly assumed scaling between B h f G d and μGd. Neutron powder diffraction shows that Gd5Ir2Bi is a c-axis ferromagnet at 3.6 K. We find no evidence for a FM → AF transition.
Abstract licence: CC BY
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