@article{10902/9195, year = {2014}, url = {http://hdl.handle.net/10902/9195}, abstract = {We report measurements of DC (AC) magnetic susceptibility and neutron diffraction on TbNiAl2 alloy. The Rietveld refinements of the x-ray and neutron diffraction data are consistent with an orthorhombic structure of the type MgCuAl2 (space group Cmcm). The results of DC (AC)- magnetic susceptibility show two successive magnetic transitions at 20 K and 11.7 K with antiferromagnetic and ferromagnetic (or ferrimagnetic) features, respectively. On the other hand, neutron diffraction patterns show that, below 20 K and down to 12 K, new reflexions appear, confirming the antiferromagnetic character of the transition observed in the macroscopic measurements. Also, at least one of these new reflexions, located at Q 1.2 Å-1, shifts to higher angles when the temperature decreases, indicating an incommensurate magnetic structure. Below 11 K, many reflexions disappear and new reflexions increase, evidencing a new magnetic transition.}, organization = {This work was supported by MAT 2008-06542-C04 and MAT2011-27573-C04 projects. The authors thank ILL and CRG-D1B for allocating neutron beam time}, publisher = {Institute of Physics}, publisher = {Journal of Physics: Conference Series 549 (2014) 012020}, title = {Successive magnetic transitions in TbNiAl2 studied by neutron diffraction}, author = {Rojas Pupo, Daniel and Sánchez Marcos, Jorge and Rodríguez Fernández, Jesús}, }