Comparison of true and calculated specific heat of YBa2Cu3O<i>y</i> for different values of oxygen index <i>y</i>
F. A. BoĭkoPhysicotechnical Institute, Academy of Sciences of the Ukrainian SSR, DonetskG. Yu. BochkovayaPhysicotechnical Institute, Academy of Sciences of the Ukrainian SSR, DonetskA. M. BykovPhysicotechnical Institute, Academy of Sciences of the Ukrainian SSR, DonetskV. L. KovarskiĭPhysicotechnical Institute, Academy of Sciences of the Ukrainian SSR, DonetskB. Ya. SukharevskiǐPhysicotechnical Institute, Academy of Sciences of the Ukrainian SSR, Donetsk
ABI
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The specific heat of YBa2Cu3Oy is measured by using low-temperature adiabatic calorimetry in the temperature interval 14–300 K for y = 6.98, 6.3, 6.8, and 6.2. The results of measurements are compared with the values of specific heat calculated from neutron spectra obtained in different laboratories.
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