Investigation of Ordered Structures Formed on the Surface of Piezoceramic Elements

The impact, by the ribbon-shaped electron stream on the surface of piezoceramic elements (ZTS-19 material), with, by the thermo-vacuum deposition formed on them, ordered structures, leads to the formation in the piezoelement of zones with dimensions (220 ... 280) × (120 ... 150) mkm with different values of the piezoelectric modulus d31 and the electro-mechanical coupling coefficient К, which allows to create a piezoelectric circuit, confining itself by the volume of a separately taken piezoelement

Investigation of Ordered Structures Formed on the Surface of Piezoceramic Elements

The impact, by the ribbon-shaped electron stream on the surface of piezoceramic elements (ZTS-19 material), with, by the thermo-vacuum deposition formed on them, ordered structures, leads to the formation in the piezoelement of zones with dimensions (220 ... 280) × (120 ... 150) mkm with different values of the piezoelectric modulus d31 and the electro-mechanical coupling coefficient К, which allows to create a piezoelectric circuit, confining itself by the volume of a separately taken piezoelement

Electronic Structure and Martensitic Transformation in a ZrRh Alloy

Experiments have revealed that equiatomic ZrRh alloy exhibits, upon cooling or heating, a structural transformation of the martensitic type from B2 to B19’ and vice versa, involving a hysteresis of the order 200°C and a shape memory effect. On the basis of the electronic structure calculation for the B2 phase of the ZrRh alloy, it is suggested that a reason for the structural instability of this ZrRh phase possessing a high-symmetry can be presence of a flat region near the Fermi level in the dispersion law