Regensburg 2010 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 5: CE: Low-dimensional Systems - Materials 1
TT 5.6: Vortrag
Montag, 22. März 2010, 15:30–15:45, H18
Neutron scattering investigations of the magnetic properties of azurite Cu3(CO3)2(OH)2 — •Kirrily Rule1, Clare Gibson1,2, Manfred Reehuis1, Bachir Ouladiaff3, Matthias Gutmann4, Jens-Uwe Hoffmann1, Sebastian Gerischer1, Alan Tennant1,2, Stefan Süllow5, and Michael Lang6 — 1Helmholtz-Zentrum Berlin, Berlin, Germany — 2Institut für Festkörperphysik, TU Berlin, Berlin, Germany — 3Institut Laue-Langevin, Grenoble, France — 4ISIS Facility, Rutherford Appleton Laboratory, Didcot UK — 5Institut für Physik der Kondensierten Materie, TU Braunschweig, Braunschweig, Germany — 6Physikalisches Institut, J.W. Goethe-Universität Frankfurt, Germany
Azurite, Cu3(CO3)2(OH)2, has been considered an ideal example of a one-dimensional (1D) diamond chain antiferromagnet. Early studies of this material imply the presence of an ordered antiferromagnetic phase below TN 1.9 K while magnetization measurements have revealed a 1/3 magnetization plateau. Until now, no corroborating neutron scattering results have been published to confirm the ordered magnetic moment structure. In this talk, we will present neutron diffraction data which reveal the presence of a commensurate magnetic order in azurite. The results of magnetic structural refinement from single crystal diffraction will also be discussed. Finally we will show some recent inelastic neutron scattering results which reveal new information about the dynamics in this material.