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)
- US Naval Research Laboratory, Washington, D. C. 20375 (USA)
- National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (USA)
- 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
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OSTI ID:5692163
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OSTI ID:5591778
Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
ANTIFERROMAGNETISM
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
GAMMA SPECTROMETERS
IRON COMPOUNDS
IRON OXIDES
MAGNETIC FIELDS
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MAGNETISM
MEASURING INSTRUMENTS
MOESSBAUER SPECTROMETERS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PRASEODYMIUM COMPOUNDS
PRASEODYMIUM OXIDES
RARE EARTH COMPOUNDS
SAMPLE PREPARATION
SPECTROMETERS
SUPERCONDUCTIVITY
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
ANTIFERROMAGNETISM
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
GAMMA SPECTROMETERS
IRON COMPOUNDS
IRON OXIDES
MAGNETIC FIELDS
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MAGNETISM
MEASURING INSTRUMENTS
MOESSBAUER SPECTROMETERS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PRASEODYMIUM COMPOUNDS
PRASEODYMIUM OXIDES
RARE EARTH COMPOUNDS
SAMPLE PREPARATION
SPECTROMETERS
SUPERCONDUCTIVITY
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES