Superconducting properties of pseudobinary telluride Chevrel phase Mo₄Re₂Te₈

The Chevrel phase HgMo6S8

The crystal structure of HgMo(6)S(8), mercury(II) hexa-molybdenum octa-sulfide, is based on (Mo(6)S(8))S(6) cluster units ( symmetry) inter-connected through inter-unit Mo-S bonds. The Hg(2+) cations occupy large voids between the different cluster units and are covalently bonded to two S atoms. The Hg atoms and one S atom lie on sites with crystallographic and 3 symmetry, respectively. Refinem...

Enhancement of the critical current density in Chevrel phase superconducting wires

Phase transformation and thermoelectric properties of bismuth-telluride nanowires.

Thermoelectric materials have attracted much attention due to the current interest in energy conversion and recent advancements in nano-engineering. A simple approach to synthesize BiTe and Bi2Te3 micro/nanowires was developed by combining solution chemistry reactions and catalyst-free vapor-solid growth. A pathway to transform the as-grown BiTe nanostructures into Bi2Te3 can be identified thro...

Optical Properties of Cesium Telluride

Cesium telluride is the photoemissive material used in many laser-driven RF-guns like in TTF-FEL. The material has been already used since few years but a detailed study of its optical properties is still missing. In this paper, we present the measurements of the cesium telluride reflectivity versus wavelength and incidence angle. These measurements are used to calculate the real and complex pa...

Phase relationships and structural, magnetic, and thermodynamic properties of alloys in the pseudobinary Er5Si4-Er5Ge4 system

The room temperature crystal structures of Er5SixGe4−x alloys change systematically with the concentration of Ge from the orthorhombic Gd5Si4-type when x=4, to the monoclinic Gd5Si2Ge2 type when 3.5⩽x⩽3.9 and to the orthorhombic Sm5Ge4 type forx⩽3. The Curie-Weiss behavior of Er5SixGe4−x materials is consistent with the Er3+ state. The compounds order magnetically below 30 K, apparently adoptin...