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Mechanical Damping of YBa 2 Cu 3 O 7 – x at Temperatures above 300 K
Author(s) -
Klimm D.,
Hofmann P.,
Paufler P.,
Reichelt W.,
Körbl U.
Publication year - 1991
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170260516
Subject(s) - analytical chemistry (journal) , materials science , transition temperature , phase transition , mineralogy , condensed matter physics , superconductivity , physics , chemistry , chromatography
Damping of ultrasonic waves with frequencies in the 100 kHz region was measured in the temperature region 300 … 1000 K. Two peaks could be observed (near 400 K or near 700 K, respectively). Occurrence of these peaks depends on oxygen content of the sample. The higher temperature peak is attributed to phase transition Pmmm 〈– – –〉 P 4/mmm of YBa 2 Cu 3 O 7 – x .