Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 326, Issue 1-2, Pages 61-64Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/S0925-8388(01)01232-4
Keywords
NMR; antiferromagnet
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Li-7 NMR study was performed on polycrystalline Li2CuO2, which has edge-sharing chains of CuO4 squares. The Knight shift and the nuclear spin lattice relaxation time in the paramagnetic state and the spectrum in the antiferromagnetic state below T-N ( similar or equal to 9 K) are reported. The Li-7 NMR results are consistent with dominant interchain interactions through oxygen and lithium atoms, which is responsible for the antiferromagnetic ordering of this compound. The internal field observed at the Li site below T-N is small and comparable to the lattice dipolar field calculated for the antiferromagnetic spin structure proposed from neutron diffraction results. (C) 2001 Elsevier Science B.V. All rights reserved.
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