Iron substitution in Y sub 2 BaCuO sub 5 and YBa sub 2 Cu sub 3 O sub 7 minus y
Journal Article
·
· Journal of Applied Physics; (USA)
- Physics Department, Buffalo State College, 1300 Elmwood Avenue, Buffalo, New York 14222 (USA)
- Electrical Engineering Department, Alfred University, Alfred, New York 14802 (USA)
- Physics Department, State University of New York, Buffalo, New York 14260 (USA)
A few atomic percent of {sup 57}Fe has been substituted for Cu in the YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital y}} system. Air-annealed samples are the superconducting 1-2-3 compound YBa{sub 2}Cu{sub 3{minus}{ital x}}{sup 57}Fe{sub {ital x}}O{sub 7{minus}{ital y}} while nitrogen-annealed samples are mainly the nonsuperconducting 2-1-1 compound Y{sub 2}BaCu{sub 1{minus}{ital x}}{sup 57}Fe{sub {ital x}}O{sub 5}. X--ray, Meissner effect, and thermogravimetric measurements have been made on both compounds. The site dependence has been studied and compared in these two compounds by the Moessbauer effect with the result that Fe prefers the Cu(l) site in the 1-2-3 compound.
- OSTI ID:
- 5491171
- Journal Information:
- Journal of Applied Physics; (USA), Journal Name: Journal of Applied Physics; (USA) Vol. 69:8; ISSN 0021-8979; ISSN JAPIA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
ANNEALING
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
CHEMICAL ANALYSIS
COPPER COMPOUNDS
COPPER OXIDES
EVEN-ODD NUCLEI
GRAVIMETRIC ANALYSIS
HEAT TREATMENTS
IMPURITIES
INTERMEDIATE MASS NUCLEI
IRON 57
IRON ADDITIONS
IRON ALLOYS
IRON ISOTOPES
ISOTOPES
MEDIUM TEMPERATURE
MOESSBAUER EFFECT
NUCLEI
OXIDES
OXYGEN COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
STABLE ISOTOPES
THERMAL ANALYSIS
THERMAL GRAVIMETRIC ANALYSIS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
ANNEALING
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
CHEMICAL ANALYSIS
COPPER COMPOUNDS
COPPER OXIDES
EVEN-ODD NUCLEI
GRAVIMETRIC ANALYSIS
HEAT TREATMENTS
IMPURITIES
INTERMEDIATE MASS NUCLEI
IRON 57
IRON ADDITIONS
IRON ALLOYS
IRON ISOTOPES
ISOTOPES
MEDIUM TEMPERATURE
MOESSBAUER EFFECT
NUCLEI
OXIDES
OXYGEN COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
STABLE ISOTOPES
THERMAL ANALYSIS
THERMAL GRAVIMETRIC ANALYSIS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES