Microwave absorption studies on high-T sub c superconductors and related materials III; Electron spin resonance studies of Y sub 2 Ba sub 1 Cu sub 1 O sub 5 and Gd sub 2 Ba sub 1 Cu sub 1 O sub 5

Journal Article · Mon Jun 10 04:00:00 EDT 1991 · Modern Physics Letters B; (Singapore)

DOI:https://doi.org/10.1142/S0217984991001118· OSTI ID:5229592

Sugawara, K; Baar, D J; Shiohara, Y; Tanaka, S ^[1]

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1. Superconductivity Research Lab., ISTEC, 10-13 Shinonome, 1-chome Koto-ku, Tokyo 135 (JP)

In this paper the ESR of Cu{sup 2+} and Gd{sup 3+} ion in Y{sub 2}Ba{sub 1}Cu{sub 1}O{sub 5} and Gd{sub 2}Ba{sub 1}Cu{sub 1}Cu{sub 1}O{sub 5} has been studied at temperatures from 4 K to room temperature. Particular emphasis has been paid to the ESR linewidths ({Delta}H{sub pp}) and g-values of the ions. The {Delta}H{sub pp} and g-values for Y{sub 1}Ba{sub 1}Cu{sub 1}O{sub 5} were found to have anomalous increments near 15 K, close to the Neel temperature of Y{sub 2}Ba{sub 1}Cu{sub 1}O{sub 5}. Similarly, {Delta}H{sub pp} for Gd{sub 2}Ba{sub 1}Cu{sub 1}O{sub 5} had peaks near 12 K. Our analysis reveals that the ESR signal from Gd{sub 2}Ba{sub 1}Cu{sub 1}O{sub 5} is dominated by the Gd{sup 3+} ESR. However, the magnetic ordering may be caused by both Gd-Gd and Gd-Cu interactions.

• OSTI ID: 5229592
• Journal Information: Modern Physics Letters B; (Singapore), Journal Name: Modern Physics Letters B; (Singapore) Vol. 5:13; ISSN MPLBE; ISSN 0217-9849
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
360207 -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
661200 -- Techniques of General Use in Physics-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION SPECTRA
ALKALINE EARTH METAL COMPOUNDS
AMINES
AMMONIUM COMPOUNDS
BARIUM COMPOUNDS
CATIONS
CHARGED PARTICLES
COPPER COMPOUNDS
COPPER IONS
CUPRATES
ELECTRON SPIN RESONANCE
GADOLINIUM COMPOUNDS
GADOLINIUM IONS
HIGH-TC SUPERCONDUCTORS
IONS
MAGNETIC RESONANCE
MICROWAVE SPECTRA
NEEL TEMPERATURE
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
QUATERNARY COMPOUNDS
RARE EARTH COMPOUNDS
RESONANCE
SPECTRA
SUPERCONDUCTORS
TEMPERATURE RANGE
TEMPERATURE RANGE 0000-0013 K
TEMPERATURE RANGE 0013-0065 K
TEMPERATURE RANGE 0065-0273 K
TEMPERATURE RANGE 0273-0400 K
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS