Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Fe Moessbauer effect in Y sub x Pr sub 1 minus x Ba sub 2 (Cu sub 0. 98 Fe sub 0. 02 ) sub 3 O sub 7

Journal Article · · Journal of Applied Physics; (USA)
DOI:https://doi.org/10.1063/1.344713· OSTI ID:6837175
 [1]; ; ;  [2];  [3]
  1. US Naval Research Laboratory, Washington, D. C. 20375 (USA)
  2. National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (USA)
  3. Nuclear Research Center-Negev, Beersheva (Israel)
{sup 57}Fe Moessbauer effect and magnetic-susceptibility measurements were performed on Y{sub 0.2}Pr{sub 0.8}Ba{sub 2}(Cu{sub 0.98}Fe{sub 0.02}){sub 3}O{sub 7{minus}{delta}} and Y{sub 0.8}Pr{sub 0.2}Ba{sub 2}(Cu{sub 0.98}Fe{sub 0.02}){sub 3}O{sub 7{minus}{delta}}, where {delta}{approx}0. The insulating 80% Pr compound showed susceptibility anomalies and a large hyperfine field distribution at low temperatures in addition to a hyperfine field spectrum for Fe on the Cu(2) sites. The superconducting 20% Pr compound displayed none of these effects at any temperature. After examining the alternatives, it is postulated that magnetic ordering of the Pr ions and an enhanced rare-earth transition-metal interaction due to {ital f}-electron admixture is responsible for these observations.
OSTI ID:
6837175
Journal Information:
Journal of Applied Physics; (USA), Journal Name: Journal of Applied Physics; (USA) Vol. 67:9; ISSN 0021-8979; ISSN JAPIA
Country of Publication:
United States
Language:
English