Investigations on Crystalline Perfection, Raman Spectra and Optical Characteristics of Transition Metal (Ru) Co-Doped Mg:LiNbO Single Crystals.

Congruent lithium niobate single crystals with a Ru:Mg co-dopant have been successfully grown using the Czochralski technique from the melt containing 0.02 mol % Ru with Mg of two varied concentrations (4.0 and 6.

Spin reorientation transition and coupled spin-lattice dynamics of SmDyFeO.

In this work, we have presented a solid-solution of SmDyFeOin the form of nano-particles having spin reorientation transition (SRT) at a temperature interval of 220-260 K. The lattice dynamics of SmDyFeOhave investigated by temperature-dependent x-ray diffraction and Raman spectroscopy. A negative thermal expansion at low temperatures has observed, which might be due to the interaction between Smand Fesublattice.

Effect of Yb doping on the refractive index and thermo-optic coefficient of YVO single crystals.

Single crystals of YVO with different doping concentrations of Yb (1.5, 3.0, 8.

Temperature-dependent index of refraction of monoclinic Ga2O3 single crystal.

We present temperature-dependent refractive index along crystallographic b[010] and a direction perpendicular to (100)-plane for monoclinic phase (β) Ga(2)O(3) single crystal grown by the optical floating zone technique. The experimental results are consistent with the theoretical result of Litimein et al.1.