Crystal growth and electrical properties of CaSO4:Dy single crystals

Effects of Li2O and Na2O Addition on Growth and Electrical Properties of PbTiO3 Single Crystals

parent red-brown and brown single crystals, respec tively, and had average size of 3.0•~2.8•~1.1mm and 3.6•~2.8•~1.0mm. (3) The content of Li2O in all the Li doped crystals was less than 0.01wt%, whereas the Na2O content was more than 0.07wt% and increased with increasing addition of Na2O. (4) Crystals doped with Li2O showed no variations in the lattice constant, but the lattice constant of c-a...

Intrinsic electrical and thermal properties from single crystals of Na24Si136.

The observation of intrinsic structural, electrical, and thermal properties from measurements on single-crystal specimens of clathrate-II Na24Si136 is reported, revealing metallic conduction in agreement with electronic structure calculations. Low-temperature heat capacity measurements corroborate a substantial electronic density of states at the Fermi level, and reveal an Einstein-like mode th...

Magneto-Optical properties of GaP single crystal

The temperature dependence of magneto-optical and magneto-photoconductivity measurements were carried out in the range of (200-330) K. A home made optical cryostat was used for the measurements. The measured room temperature value of the energy gap was found to be 2.211 eV. The temperature coefficient of energy gap was found to be -5.48×10-4 eV/K obtained by the optical absorption method and -4...

Crystal growth, structure and physical properties of crystals

Vesuvianite is an ortho-diorthosilicate of a general schematic formula X~19Y13Z18O68W10, where X – Ca and other cations, which occupy sites of coordination number 8, Y – cations occupying octahedrons and pentagonal polyhedrons: Al, Fe, Mg, Ti, etc., Z – Si in tetrahedrons, W – univalent and bivalent anions. Structures of vesuvianites are studied in dependence on a character of cation ordering i...

Electrical conduction properties of La - substituted bismuth titanate single crystals