Speaker
Mr
Erxi Feng
(Jülich Centre for Neutron Science JCNS, Forschungszentrum Jülich GmbH Outstation at MLZ)
Description
Pyrochlore iridates and hafnates A2B2O7 (A= rare earth ion, B=Ir, Hf), in which both the A site and the B site consists of corner-shared tetrahedral, are of particular interest due to the presence of both strong spin-orbital coupling and geometrical frustration. Recently, we have successfully synthesized high quality powder samples of Nd2Ir2O7 and Nd2Hf2O7 which high quality powder samples have been synthesized by solid-state reaction. By employing polarized neutron spectrometer DNS, we have investigated these two compounds magnetic ground states. Both two samples show k=0 antiferromagnetic long-range ordering but with different ordering temperature which may be caused by the magnetic ordering of Ir4+ ions.
Primary author
Mr
Erxi Feng
(Jülich Centre for Neutron Science JCNS, Forschungszentrum Jülich GmbH Outstation at MLZ)
Co-authors
Prof.
Thomas Brückel
(Forschungszentrum Jülich GmbH)
Dr
Thomas Wolf
(Karlsruhe Institute of Technology KIT)
Dr
Yixi Su
(Jülich Centre for Neutron Science JCNS, Forschungszentrum Jülich GmbH Outstation at MLZ)
