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.
E.Bonetti, E. (1991). Dynamic Youngs Modulus relaxation and softening in Yba2Cu3O7-x. Bristol : IOP.
Dynamic Youngs Modulus relaxation and softening in Yba2Cu3O7-x
E. Bonetti
Primo
Supervision
;E. G. CampariSecondo
Investigation
;P. CammarotaPenultimo
Formal Analysis
;A. CasagrandeUltimo
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.File in questo prodotto:
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