Determination of the crystal and magnetic structure of the DyCrO4-scheelite polymorph by neutron diffraction

A J Dos santos-García, E Climent-Pascual, M G Rabie, J Romero de Paz, J M Gallardo Amores, D Khalyavin, R Sáez-Puche
2014 Journal of Physics, Conference Series  
Neutron diffraction data of DyCrO4 oxide, prepared at 4 GPa and 833 K from the ambient pressure zircon-type, reveal that crystallize with the scheelite-type structure, space group I 41/a. Accompanying this structural phase transition induced by pressure the magnetic properties change dramatically from ferromagnetism in the case of zircon to antiferromagnetism for the scheelite polymorph with a TN = 19 K. The analysis of the neutron diffraction data obtained at 1.2 K has been used to determine
more » ... used to determine the magnetic structure of this DyCrO4-scheelite oxide which can be described with a k = [0, 0, 0] as propagation vector, where the Dy and Cr moments are lying in the ab-plane of the scheelite structure. The ordered magnetic moments are 10 µB and 1µB for Dy +3 and Cr +5 respectively.
doi:10.1088/1742-6596/549/1/012021 fatcat:llm5swxprrgxzmui4cdijqear4