Physical properties and structure of vapor-quenched immiscible alloys

Abstract

The method of modernized ion-plasma sputtering produced metastable states, including nanocrystalline and amorphous phases in films of Fe-Ag, Fe-Bi, Fe-Ag-Bi, Fe-Co-Ag and Ni-Ag alloys whose components do not mixed in the liquid state. The periods of the crystal lattices and the dimensions of the crystallites of the nonequilibrium phases in the fresh-sputtered state and after the heating are determined. The temperatures of the beginning and the end of the decomposition of metastable phases are established when heated at a constant rate. The electric and hysteretic magnetic properties of films in freshly dusted and thermally processed states are measured. The compositions and conditions for obtaining films with low values of the temperature coefficient of electrical resistivity (~ 10-5 K-1) and high coercive force (HC ~ 150 kA/m) are established. Such films can be promising for use as thin-film precision resistors and magnetic information carriers with an increased recording density.

Thermodynamic and kinetic features of the formation of amorphous state in films during quenching from the vapor state

“…These conditions are supported by experimental results: 1) if the energy and velocity of condensed atoms in the adhesion field of the substrate are increased, then condition (1) is satisfied and the tendency to amorphization of the substance increases; 2) with an increase in the values of Sа and νТ, inequality (8) and condition (2) intensify, which will contribute to the amorphization process: thus, substances with a high evaporation temperature amorphized more easily than substances with a lower evaporation temperature; 3) lowering the substrate temperature decreases the temperature of condensed atoms and enhances the third condition for amorphization. However, there is a value of νp, which is currently difficult for experimental determination, but its effect on the process of amorphization of a substance is also significant.…”

“…All this and a many of immiscible systems (about 200 systems of metal-metal type) determine the relevance and prospects of research of a new class of materials for the industry. To date, sufficiently many single-phase alloys have already been obtained in systems of immiscible components characterized by anomalously large positive mixing energy by different methods, primarily quenching from the vapor phase, amorphous phases and highly supersaturated solid solutions [6][7][8].…”

High-adhesion unlayered films: physical and technological basis of their production

“…The objects of study were Cu films. The deposition of the films was carried out simultaneously on a glass ceramic sitall-substrate by the method of three-electrode ion-plasma sputtering with using a bias potential the substrate [5][6][7][8].…”

“…It is known that the deposition of films on a glass-ceramic substrate by the method of three-electrode ion-plasma sputtering simultaneously with the use of the bias potential on the substrate leads to an increase in adhesion [3][4][5][6][7][8].…”

Effect of chromium additions on the structure and physical properties of manganese-based films

“…Such alloys can be obtained in the form of films by the method of modernized three-electrode ion-plasma spraying (MTIPS) [4,8]. The modernized method of three-electrode ion-plasma sputtering of mosaic targets [9] increases the efficiency of traditional methods of ion-plasma deposition. This method provides an increase in the kinetic energy of the sputtered atoms over 100 eV prior to collision with the substrate [10].…”