Nuclear and Magnetic structure of the FeSO4(OD,F) Solid Solution
We propose to study the nuclear and magnetic structure of a solid solution of the FeSO4(F,OH) in which we have precise control over the content of F and OH anionic groups. Preliminary temperature-dependent magnetic susceptibility measurements show that long-range magnetic order is established at 100K in the fully fluorinated FeSO$_4$F sample. In contrast, the FeSO$_4$OH sample actually demonstrates an ordering temperature of 115K as determined by close examination of the derivative of the susceptibility with respect to temperature. An intermediate composition FeSO$_{4}$(OH)$_{0:45}$F$_{0:55}$ shows an ordering temperature very similar to the FeSO$_4$F end member. We will use low-temperature neutron diffraction to accurately determine the orientation of both the proton as well as the magnetic moments at low temperatures and use this information to rationalize the observed magnetic behavior.
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ROUSSE Gwenaelle; ATI Mohamed; CHOTARD Jean Noel; Thomas C. Hansen; KURZMAN Joshua; MELOT Brent; Marine REYNAUD and TARASCON Jean-Marie. (2012). Nuclear and Magnetic structure of the FeSO4(OD,F) Solid Solution. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-31-2230
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