Mechanical Damping of YBa2Cu3O7 –x at Temperatures above 300 K |
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Authors: | D. Klimm,P. Hofmann,P. Paufler,W. Reichelt,U. Kö rbl |
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Abstract: | 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 YBa2Cu3O7 – x. |
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