Effect of oxygen deficiency on the low-temperature peculiarities of the velocity of sound in YBa2Cu3O7–<i>δ</i>
A. L. GaidukPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, KharkovV. M. GasanPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, KharkovV. V. DemirskiĭPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, KharkovS. ZherlitsynPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, KharkovИ. Г. КолобовPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, KharkovE. D. TabachnikovaPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, KharkovV. D. FilPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Kharkov
ABI
Abstract
The behavior of the velocity of sound is investigated in the region of low temperatures under various thermal treatments leading to a change in the oxygen content. It is found that the temperature dependence is nearly linear and its slope correlates with the oxygen deficit in the YBa2Cu3O7–δ samples. Obviously, this paves the way for developing a method to monitor the oxygen deficit in bulk samples of yttrium ceramics.
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