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Martinelli, A., M. Giovannini, J. G. Sereni, and C. Ritter. "Suppression of ferromagnetic order by Ag-doping: a neutron scattering investigation on Ce2(Pd1âˆ’x Ag x )2In (xâ€‰â€‰=â€‰â€‰0.20, 0.50)." Journal of Physics: Condensed Matter 30, no. 26 (2018): 265601.
Abstract: The ground state magnetic behaviour of Ce2(Pd0.8Ag0.2)2In and Ce2(Pd0.5Ag0.5)2In, found in the ferromagnetic branch of Ce2Pd2In, has been investigated by neutron powder diffraction at low temperature. Ce2(Pd0.8Ag0.2)2In is characterized by a ferromagnetic structure with the Ce moments aligned along the c-axis and values of 0.96(2) ÂµB. The compound retains the P4/mbm throughout the magnetic transition, although the magnetic ordering is accompanied by a significant decrease of the lattice strain along [0â€‰0â€‰l], suggesting a magnetostructural contribution. The magnetic behaviour of Ce2(Pd0.5Ag0.5)2In is very different; this compound exhibits an extremely reduced magnetic scattering contribution in the diffraction pattern, that can be ascribed to a different kind of ferromagnetic ordering, with extremely reduced magnetic moments (~0.1 Âµ
B) aligned along [0â€‰lâ€‰0]. These results point to a competition between different types of magnetic correlations induced by Ag-substitution, giving rise to a magnetically frustrated scenario in Ce2(Pd0.5Ag0.5)2In.