Dependence of the shear modulus of Bi ceramics on external factors in the temperature range 65-130 K

Experimental data on the dependence of the dynamic shear modulus of biphase Bi ceramics (Bi-2212 and Bi-2223) on temperature, magnetic field, and deformation are presented. The results indicate the multistage penetration of the magnetic field into a sample. The shear modulus is found to be sensitive to the magnetic and the defective structure of the ceramics. It is suggested that the observed defects of the shear modulus are associated with phase separation in the CuO2 planes of the 2212 phase. (Author)