sup 89 Y NMR study of the exchange coupling constant between the CuO sub 2 layer and the Gd ion in Gd sub x Y sub 1 minus x Ba sub 2 Cu sub 3 O sub 7 minus. delta

Journal Article · Tue May 01 00:00:00 EDT 1990 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.41.9513· OSTI ID:7155165

Sakamoto, H; Tei, M; Takai, H; Mizoguchi, K; Kume, K ^[1]

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1. Department of Physics, Tokyo Metropolitan University, Setagaya-ku, Tokyo 158, Japan (JP)

Free-induction decays of {sup 89}Y NMR are observed in magnetically dilute alloys Gd{sub {ital x}}Y{sub 1{minus}{ital x}}Ba{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} for {ital x}=0, 0.005, and 0.01. It is shown that the excess decay by Gd is almost completely due to its direct dipolar interactions. From an analysis of the indirect Ruderman-Kittel-Kasuya-Yosida interaction, the exchange coupling constant is estimated to be less than 0.01 eV.

• OSTI ID: 7155165
• Journal Information: Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 41:13; ISSN 0163-1829; ISSN PRBMD
• 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
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COPPER COMPOUNDS
COPPER OXIDES
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RARE EARTH COMPOUNDS
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SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM 89
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YTTRIUM ISOTOPES
YTTRIUM OXIDES