Published September 1990 | Version v1
Journal article Metadata-only

On NQR spectra of copper in oxygen-deficite specimens of YBa2Cu3O7-δ (δ<0.5)

Creators

  • 1. AN SSSR, Sverdlovsk (USSR). Inst. Fiziki Metallov

Description

Evolution of NQR spectra of 63Cu is discussed for ceramic YBa2Cu3O7-δ specimens of superconducting compositions with δ≤0.5 in connection with manifestation of ordering in the nearest surrounding of Cu1 copper atoms. The highest degree of disordering was revealed for 0.1<δ<0.25 compositions. The behaviour of spin-spin relaxation rate of copper atoms in Cu2-0 planes testifies to increase of correlation length in the region of values, preceding the transformation to semiconductor state

Additional details

Additional titles

Original title (Russian)
О спектрах YaKR меди в кислородно-дефицитных образцах YBa

Publishing Information

Journal Title
Fizika Metallov i Metallovedeniya
Journal Issue
no.9
Series
Fiz. Met. Metalloved.
ISSN
0015-3230
CODEN
FMMEA

INIS

Country of Publication
Russian Federation
Country of Input or Organization
USSR
INIS RN
22071983
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
BARIUM COMPOUNDS; CERAMICS; CUPRATES; HIGH-TC SUPERCONDUCTORS; MAGNETIC SUSCEPTIBILITY; NMR SPECTRA; NUCLEAR MAGNETIC RESONANCE; ORDER-DISORDER TRANSFORMATIONS; SPIN-LATTICE RELAXATION; TEMPERATURE DEPENDENCE; YTTRIUM COMPOUNDS
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; COPPER COMPOUNDS; MAGNETIC PROPERTIES; MAGNETIC RESONANCE; OXYGEN COMPOUNDS; PHASE TRANSFORMATIONS; PHYSICAL PROPERTIES; RELAXATION; RESONANCE; SPECTRA; SUPERCONDUCTORS; TRANSITION ELEMENT COMPOUNDS