Abstract
The magnetic structures of R 2BaNiO 5 (R Nd, Tb, Dy, Ho, Er, Tm, Yb and Y) have been characterized by means of neutron powder diffraction from 1.5 K to room temperature. Three dimensional antiferromagnetic ordering is established for both R and Ni sublattices at relatively high temperatures. The propagation vector of the magnetic structures of the whole family is k = [ 1 2 0 1 2 ]. At 1.5 K the directions of the magnetic moments differ because of the different anisotropy of the rare earth ions. The strong magnetic moment reduction of Ni 2+ cations is probably due to the combination of low-dimensional quantum effects and covalency. For the compounds with the biggest rare earth ions, the Ni moments rotate from nearly parallel to the a-axis toward the c-axis with decreasing temperature. A smooth re-orientation, governed by the magnetic anisotropy of R 3+, seems to occur below and close to T N.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
