Abstract
We report complementary magnetic X-ray and neutron diffraction measurements on the rare earth metals, holmium and terbium, using the 9.4 diffractometer at the Synchrotron Radiation Source (Daresbury Laboratory) and the white-beam SXD diffractometer at the ISIS pulsed neutron source (Rutherford Appleton Laboratory). Holmium, which has been studied extensively in previous X-ray and neutron investigations, was employed in preliminary measurements to develop the necessary experimental techniques. New X-ray results on terbium are described, of the temperature variation of the modulation wavevector and of the resonant enhancement at the L III absorption edge. The neutron and X-ray results are compared for the two samples studied.
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