In this work we are concerned with the preparation and characterisation of BaTiO3 - CaTiO3 –B2O3 nonlinear dielectric materials. Samples of (1-x) BaTiO3 +xCaTiO3 +y B2O3 type (with x=0.3; 0.7 and 0.01≤y≤0.03) were elaborated ...