Now showing items 51-60 of 796
Upconversion luminescence of CsScF4 crystals doped with erbium and ytterbium
Tetragonal CsScF4 crystals doped with (5 at.%) Er and Er/Yb (0.5 at.%/5 at.%) are grown and their crystal structure is determined to belong to Pmmn space group. Er and Yb ions are shown to occupy distorted octahedral Sc ...
Thermal propertiesandphasetransitioninthe fluoride, (NH4)3SnF7
Calorimetric, dilatometric and differential thermal analysis studies were performed on (NH4)3SnF7 for a wide range of temperatures and pressures. Large entropy (δS0 = 22 J/mol•K) and elastic deformation (δ(ΔV/V) 0 = 0.89%) ...
Structural and magnetic features of solid-phase transformations in Mn/Bi and Bi/Mn films
Solid-phase transformations at different annealing temperatures in Mn/Bi (Mn on Bi) and Bi/Mn (Bi on Mn) films have been studied using X-ray diffraction, electron microscopy, and magnetic measurements. It has been shown ...
Coherent manipulation of the Raman-induced gratings in atomic media
We consider dynamically controllable periodic structures (gratings), resulting from Raman interaction of a weak probe field with a standing-wave pump and a second control laser field in four-level atomic media of N type. ...
Reflective Power Limiter for X-band with HTSC switching element
his paper presents a new type of power limiter (PL), using superconducting – to – normal state phase transition in HTSC. The presented device differs from the existing ones mainly in the ...
Magnetic resonance in a gallium-doped Cu-Cr-S structure
A layered Cu–Cr–S structure doped with Ga ions and consisting of single-crystal CuCrS2 layers, embedded with thin plates of spinel phases CuCr2S4 and CuGaxCr2–xS4, has been studied using the magnetic resonance and magnetic ...