Volume 42, Number 3, May I 1998
|Page(s)||325 - 330|
|Section||Condensed matter: electronic structure, electrical, magnetic and optical properties|
|Published online||01 September 2002|
Magnetic correlations in deuteronium jarosite, a model S = 5/2 Kagomé antiferromagnet
Department of Chemistry, University of Edinburgh The King's Buildings,
West Mains Rd., Edinburgh, EH9 3JJ, UK
2 Department of Physics, University of Toronto, 60 St. George Street, Toronto, Ontario, M5S 1A7, Canada
3 Neutron Program for Materials Research (NRC ), Chalk River, Ontario, Canada, K0J 1JO
Accepted: 10 March 1998
Deuteronium jarosite, , contains a Kagomé lattice of Heisenberg spins S=5/2 with a coverage of . DC and AC susceptibility measurements show strong in-plane antiferromagnetic exchange () and a spin-glass transition at , while the magnetic contribution to the specific heat below Tf rises with T as T2, characteristic of two-dimensional propagating modes. Powder neutron diffraction reveals short-range magnetic correlations with a correlation length at 1.9 K.
PACS: 75.10.Jm – Quantized spin models / 75.40.Gb – Dynamic properties (dynamic susceptibility, spin waves, spin diffusion, dynamic scaling, etc.) / 75.50.Lk – Spin glasses and other random magnets
© EDP Sciences, 1998
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