Abstract Measurements of the dynamic Youngs modulus were performed in polycrystalline YBCO by the vibrating reed technique (102-104 Hz) at different temperatures between 300 and 850 K. An abrupt and strong modulus softening, indicative of a phase transition, occurs with increasing x at about 0.50. Isothermal modulus measurements suggest that the orthogonal phase first transforms into a tetragonal matrix with embedded micro-ortho domains. Successively, a first order kinetics yields the tetragonal phase.

Dynamic Youngs Modulus relaxation and softening in Yba2Cu3O7-x

E. Bonetti
Primo
Supervision
;
E. G. Campari
Secondo
Investigation
;
P. Cammarota
Penultimo
Formal Analysis
;
A. Casagrande
Ultimo
Investigation
;
1991

Abstract

Abstract Measurements of the dynamic Youngs modulus were performed in polycrystalline YBCO by the vibrating reed technique (102-104 Hz) at different temperatures between 300 and 850 K. An abrupt and strong modulus softening, indicative of a phase transition, occurs with increasing x at about 0.50. Isothermal modulus measurements suggest that the orthogonal phase first transforms into a tetragonal matrix with embedded micro-ortho domains. Successively, a first order kinetics yields the tetragonal phase.
1991
Superconductor Science and Technology
196
198
E.Bonetti, E.G.Campari, P.Cammarota, A.Casagrande, S.Mantovani
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/817482
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