Cu nuclear quadrupole resonance and magnetic phase transition in CuO
- 1 May 1990
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 67 (9) , 5864-5866
- https://doi.org/10.1063/1.345996
Abstract
Cu-nuclear quadrupole resonance (NQR) frequency and relaxation rates measurements in CuO, in the vicinity of the antiferromagnetic ordering temperature TN, are presented. As T→T+N divergent behaviors of the relaxation rates T−11,2 and an anomalous decrease in the NQR frequency are observed. These effects are discussed in light of the temperature dependence expected for conventional one-dimensional Heisenberg paramagnet and some anomalies are interpreted as possible results of valence fluctuations in the CuO bond character.This publication has 12 references indexed in Scilit:
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