Reference : A neutron-scattering investigation of the magnetic structure and magnetic excitations...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/10993/585
A neutron-scattering investigation of the magnetic structure and magnetic excitations in nanocrystalline Tb
English
Vecchini, C. [CNR-INFM S3, Dipartimento di Fisica, Università di Modena e Reggio Emilia, Italy]
Moze, O. [CNR-INFM S3, Dipartimento di Fisica, Università di Modena e Reggio Emilia, Italy]
Hoser, A. [Institut für FestkoerperForschung, Forschungzentrum Jülich, Germany]
Prager, M. [Institut für FestkoerperForschung, Forschungzentrum Jülich, Germany]
Argyriou, D. [Berlin Neutron Scattering Center, Hahn Meitner Institut, Germany]
Michels, Andreas mailto [Paul Scherrer Institute, Switzerland/Technische Physik, Universität des Saarlandes, Germany]
Roessli, B. [Laboratory for Neutron Scattering, Switzerland/Paul Scherrer Institute, Switzerland]
Weissmüller, J. [Institut für Nanotechnologie, Forschungzentrum Karlsruhe, Germany]
Lemier, C. [Institut für Nanotechnologie, Forschungzentrum Karlsruhe, Germany]
Viswanath, R. N. [> >]
2006
Journal of Applied Physics
American Institute of Physics
99
8
5021-5023
Yes (verified by ORBilu)
0021-8979
Melville
NY
[en] The magnetic structure and magnetic excitations in nanocrystalline Tb have been investigated by neutron diffraction and neutron spectroscopy. This is a report on the long-range magnetic order and the magnetic excitations in a nanocrystalline elemental rare earth. Refinement of the neutron-diffraction data reveals an “average” magnetic structure of each crystallite which contains a significant out-of-plane component to the magnetic moment as well as a suppression of the high-temperature antiferromagnetic phase observed for coarse-grained Tb. The inelastic-neutron-scattering measurements reveal the presence of a magnetic excitation of approximately 10 meV at 2.5 K. The excitation energy decreases with increasing temperature. The origins of this excitation are discussed with particular reference to the magnetic modes at the zone center observed for single-crystal Tb.
http://hdl.handle.net/10993/585
10.1063/1.2165139

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