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Single crystal structure and electrical properties of Cu8 Ni4 Sn12 Sn32
Starting from pure metals and sulphur in evacuated silica tubes single crystals of Cu Ni Sn S have been obtained by heating at 8 4 12 32 ] ° 7508C. It crystallizes in the Fd 3m space group with Z51 and a510.3022 (6) A. The ...
New double perovskites having low dielectric loss:LaBaZnTaO6, LaSrZnNbO6, and Ba2Zn0.5Ti0.5TaO6
Oxides of the type LaBaZnTaO6 and LaSrZnNbO6 have been synthesized by the solid-state method at 1100°C. Ba2Zn0.5Ti0.5TaO6 was synthesized by the molten salt method (using NaCl–KCl as flux), the solid-state method yielding ...
Temperature synthesis of bismuth cuprates
A low temperature aqueous solution preparation under strong alkaline medium is reported for the synthesis of bismuth cuprates. Highly crystalline products were obtained at temperatures around 90 “C. Tetragonal Bi2Cu04 ...
Ba3ZnTa2−xNbxO9 and Ba3MgTa2−xNbxO9 (0≤x≤1): synthesis, structure and dielectric properties
Oxides belonging to the families Ba3ZnTa2−xNbxO9 and Ba3MgTa2−xNbxO9 were synthesized by the solid state reaction route. Sintering temperatures of 1300°C led to oxides with disordered (cubic) perovskite structure. However, ...
Improvement of adhesion of TiN coatings on stainless steel substrates by high energy heavy ion irradiation
The performance of tribological coatings depends greatly on the adhesion of the coating to the substrate. Various techniques are known for surface modification. Ion irradiation is a technique which has been used to modify ...
Toughening of thin films by high energy ion beams
Refractory metal films tend to grow with a high degree of intrinsic tensile stress. As the film thickness increases, the integrated stress becomes high enough to cause loss of adhesion. In the present study, when chromium ...