Relationship between superconductivity and crystalline stability of the Y-Ba-Cu-O system

H. Zhang; Y. Zhao; X. Y. Zhou; Q. R. Zhang

doi:10.1103/PhysRevB.42.2253

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Relationship between superconductivity and crystalline stability of the Y-Ba-Cu-O system

H. Zhang, Y. Zhao, X. Y. Zhou, Q. R. Zhang

DOI 10.1103/PhysRevB.42.2253 · Physical Review B

T1

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Abstract

The thermal decomposition temperature and the superconductivity of nine substituted systems (Y is substituted by Gd, Dy, Pr; Ba by Sr, Ca; Cu by Sn, Al, Zn, Ni, respectively) were studied systematically. The results reveal that there is a close relationship between the Tc and the thermal decomposition temperature, and that the Tc is always suppressed as the thermal decomposition temperature is lowered. The authors consider that the thermal stability may be one of the predominant factors for the superconductivity.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O7-y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	92	Pressure not reported	unknown
NdBa2Cu3O7-y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	77	Pressure not reported	zero_resistance
YBa2Cu2.9Al0.1O7.10 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
YBa2Cu2.9Sn0.1O7.28 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown