Crystal-field splittings and magnetic properties of Pr sup 3+ and Nd sup 3+ in R Ba sub 2 Cu sub 3 O sub 7

Journal Article · Mon Apr 01 04:00:00 EST 1991 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.43.7923· OSTI ID:5690033

Soderholm, L; Loong, C; Goodman, G L; Dabrowski, B D ^[1]

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1. Argonne National Laboratory, Argonne, Illinois 60439 (USA)

Neutron inelastic scattering spectra are reported for superconducting NdBa{sub 2}Cu{sub 3}O{sub 7} and insulating PrBa{sub 2}Cu{sub 3}O{sub 7}. These spectra are analyzed in terms of standard crystal-field theory for 3+ rare-earth ions in a manner that is consistent with the level assignments made in a similar study of HoBa{sub 2}Cu{sub 3}O{sub 7}. Using the eigenfunctions and eigenvalues obtained from this analysis of the inelastic neutron scattering spectra, the corresponding magnetic susceptibilities as a function of temperature were calculated according to the van Vleck formalism. Good agreement with experimental susceptibilities is achieved for all three compounds over the range of 100 to 300 K. The observed magnetic scattering in NdBa{sub 2}Cu{sub 3}O{sub 7} agrees very well with the crystal-field calculations. In spite of the observed large intrinsic widths of the experimental crystal-field peaks for PrBa{sub 2}Cu{sub 3}O{sub 7}, the measured intensity is consistent with the calculated crystal-field excitation spectrum for Pr{sup 3+} ions in this lattice. The standard crystal-field treatment of Pr{sup 3+} ions is shown to explain the magnetic properties of PrBa{sub 2}Cu{sub 3}O{sub 7} with no need to consider either the static or dynamic coexistence of Pr{sup 3+} and Pr{sup 4+}.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5690033
• Journal Information: Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 43:10; ISSN PRBMD; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL FIELD
DIFFRACTION
EIGENFUNCTIONS
EIGENVALUES
ELECTRIC CONDUCTIVITY
ELECTRICAL EQUIPMENT
ELECTRICAL INSULATORS
ELECTRICAL PROPERTIES
EQUIPMENT
FUNCTIONS
HIGH-TC SUPERCONDUCTORS
HOLMIUM COMPOUNDS
HOLMIUM OXIDES
INELASTIC SCATTERING
LOW TEMPERATURE
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MEDIUM TEMPERATURE
MINERALS
NEODYMIUM COMPOUNDS
NEODYMIUM OXIDES
NEUTRON DIFFRACTION
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PEROVSKITE
PEROVSKITES
PHYSICAL PROPERTIES
PRASEODYMIUM COMPOUNDS
PRASEODYMIUM OXIDES
RARE EARTH COMPOUNDS
SCATTERING
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS