Journal
PHYSICA B-CONDENSED MATTER
Volume 329, Issue -, Pages 751-752Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0921-4526(02)02490-0
Keywords
spin state; YBaCo2O5.5; NMR
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Co-59 NMR studies have been made to clarify the spin state and local magnetic properties of YBaCo2O5.5, a new cobalt oxide with an oxygen-deficient and A-site ordered perovskite structure. In the antiferromagnetic state we observed four Co NMR spectra with internal fields of 216, 24, 19, and 0 kOe. This means that the crystal structure at low temperatures does not have the 2 x 1 x 1 superstructure observed at room temperature. (C) 2003 Elsevier Science B.V. All rights reserved.
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