Measurements of the diamagnetic moment of yttrium-based metal-oxide ceramic
O. V. GrigutPhysicotechnical Institute, Academy of Sciences of the Ukrainian SSR, DonetskYu. M. IvanchenkoPhysicotechnical Institute, Academy of Sciences of the Ukrainian SSR, DonetskE. N. MalyshevPhysicotechnical Institute, Academy of Sciences of the Ukrainian SSR, DonetskP. MikheenkoPhysicotechnical Institute, Academy of Sciences of the Ukrainian SSR, DonetskYu. F. RevenkoPhysicotechnical Institute, Academy of Sciences of the Ukrainian SSR, Donetsk
ABI
Abstract
Inductive measurements of the temperature dependence of the diamagnetic moment of the metal oxide ceramic Y1.2Ba0.8CuO4 were performed. The diamagnetic properties of this ceramic were compared with the resistive properties. Their evolution was followed. The percentage content of the superconducting phase was determined. It is concluded that the conductivity has a percolation character and the links between the ceramic granules are Josephson links. It was discovered that a surface superconducting interlayer is formed, and its thickness is determined. The contribution of the paramagnetic phase present in the ceramic to the inductance is discussed.
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