Unraveling the magnetic structures of TbFeO3
Recent experimental results regarding lattice dynamics and magnetization of TbFeO3 evidence for changes of the magnetic structure in the 250 - 400 K range, with no symmetry breaking, and have raised new questions about its magnetic structure and the mechanisms underlying the spin-phonon coupling, motivating further detailed studies of both crystalline and magnetic structures. The main objective of this proposal is to: 1) determine the temperature dependence of the magnetic structure and the changes that occur below TN; 2) study the temperature evolution of both magnetic and crystalline structures and their symmetry in the spin-reorientation transition; 3) shining light on the mechanisms of the spin-phonon coupling observed in Raman scattering. To answer these queries, powder neutron scattering is the key experimental tool to study magnetic and crystallographic structures with a much higher resolution than x-ray diffraction. The obtained results will complement the already reported ones in order to fully understand the mechanisms underlying the anomalies observed in both magnetization and Raman scattering. This proposal is framed on an ongoing PhD work.
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J Agostinho Moreira; A. Maia; MELO NOGUEIRA ROSA GOMES Mariana; SAVVIN Stanislav and VILARINHO Rui. (2020). Unraveling the magnetic structures of TbFeO3. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-31-2700
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