Study of the magnetic structures of the novel room temperature magnetocaloric compounds R6 (Fe,Mn) Bi2 (R = Dy, Tb)
Rare earth based intermetallic materials are among the novel magnetocaloric materials being studied in order to work at room temperature as well as in the gas liquefaction regions. We propose the study of 3 selected members of the family of magnetocaloric intermetallics R6(Fe,Mn)Bi2 (R=Dy, Tb). The goal is to determine the magnetic structure by using neutron diffraction, as a function of temperature, paying special attention to the low temperature phases which are expected to have a complex non-collinear arrangement of spins (incommensurate, canted AFM, etc.). The information will allow to check if, indeed, the rare earth ions are the sole responsible of the magnetic properties of the materials and to clarify the role of the transition metal ions. The full understanding of the magnetic structures in these series will help to design magnetocalorics with improved properties.
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OLEAGA Alberto; APINANIZ Estibaliz; AURELIO Gabriela; J Campo; HERRERO HERNANDEZ Aritz; PUENTE ORENCH Ines and RODRIGUEZ VELAMAZAN Jose Alberto. (2023). Study of the magnetic structures of the novel room temperature magnetocaloric compounds R6 (Fe,Mn) Bi2 (R = Dy, Tb). Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-31-2955
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