CuCr 1−x Mg x O 2 , a wide band gap semiconductor with the delafossite structure, has been synthesized in bulk and thin-film form. Bulk undoped CuCrO2 is almost black moderate conductivity p-type carriers. Upon doping 5% Mg, increases by factor of 1000. In films, best 220 S cm−1 CuCr0.95Mg0.05O2, 7 higher than previously reported for Cu-based delafossites. Undoped films have order 1 cm−1. Films are usually polycrystalline on amorphous substrates, but can be c-axis oriented if deposited at or...

Neutron-diffraction measurements have been carried out to investigate the crystal structure, magnetic structures, and phase transitions in ${\mathrm{RNi}}_{2}$${\mathrm{B}}_{2}$C (R= Y, Ce, Pr, Nd, Tb, Dy, Ho, Er, Tm, Yb). The materials that order magnetically exhibit a wide variety of both commensurate incommensurate which argues strongly dominant exchange interactions are indirect Ruderman-Kittel-Kasuya-Yosida type. Nd system exhibits antiferromagnetic ordering at 4.8 K, with wave vector...

Cu2S and CuS have been under intense scrutiny, with the aim of understanding relationship between their electronic structures commercially important physical properties. Here, X-ray absorption emission spectroscopic data analyzed using a quantitative, molecular orbital (MO) based approach to understand structure these two complex systems. is shown significant amount Cu2+ sites therefore Cu0 centers. The presence low-valent Cu correlated electrical conductivity Cu2S, especially at high...

Heavily F-doped SnO(2) nanocrystals were successfully prepared by a novel synthetic approach involving low-temperature oxidation of Sn(2+)-containing fluoride complex KSnF(3) as the single-source precursor with H(2)O(2). The powder was characterized X-ray diffraction, TG-MS, BET surface area, diffuse reflectance spectroscopy, XPS, PL, FTIR Raman EPR SEM, and TEM. Broadening diffracted peaks, signifying low crystallite size products, quite evident in diffraction pattern obtained from KSnF(3)....

A novel and unique understanding pertaining to the synthesis of Cu(1.8)S CuS in bulk was achieved from analysis products Cu-Tu precursors, with Cl(-), NO(3)(-), SO(4)(2-) as counteranions, ethylene glycol. [Cu(4)(tu)(9)](NO(3))(4)·4H(2)O always yielded whether dissociation carried out glycol presence air or argon under solvothermal conditions. only product when [Cu(tu)(3)]Cl dissociated well flowing mixture formed chloride ion containing precursor solvothermally. [Cu(2)(tu)(6)]SO(4)·H(2)O a...

We have carried out powder-neutron-diffraction studies of the antiferromagnetic order that develops below ${\mathit{T}}_{\mathit{N}}$=6.8 K in magnetic superconductor (${\mathit{T}}_{\mathit{c}}$=11 K) ${\mathrm{ErNi}}_{2}$${\mathrm{B}}_{2}$C. The structure is associated with spins on Er atoms, which a transversely polarized planar sinusoidal propagating along or b axis equal domains, moments parallel to axis, respectively. Third and fifth harmonics sine wave are observed at low...

Portable electronic products demand multifunctional module comprising of digital, radio frequency and memory functions. Through silicon via (TSV) technology provides a means implementing complex, integration with higher packing density for system in package. A 3-D TSV has been developed this paper. Thermo-mechanical analysis performed interconnect design is optimized. Multiple chips representing different functional circuits are assembled using wirebond flip chip interconnection methods....

A general methodology for the precise control of final product composition in copper sulfide system has been established first time. Cu(2)S, prepared by dissociation [Cu(tu)(3)]Cl ethylenediamine, was subjected to controlled chemical oxidation iodine obtain Cu(2-x) (x = 0.2, 0.25, 0.88, 1.0) at room temperature. The compositions were characterized powder X-ray diffraction, ICP spectroscopy, Raman and magnetization measurements.

Our magnetic investigation of ${\mathrm{CoRh}}_{2}{\mathrm{O}}_{4}$ nanoparticles show the signature antiferromagnetic ordering at ${T}_{N}\ensuremath{\approx}27\mathrm{K},$ same as that bulk sample, for all particle sizes down to $\ensuremath{\approx}16\mathrm{nm}.$ However, we observe a systematic enhancement below ${T}_{N},$ being larger smaller size. We propose core-shell model magnetization nanoparticles, with core retaining its order and ${T}_{N}$ attributed increasing number...

A variety of synthetic strategies has been employed to prepare pure monophasic cuprates different families with good superconducting properties. Besides the traditional ceramic method, other methods such as coprecipitation and precursor methods, sol-gel alkali flux method combustion have for synthesis cuprates. Depending on requirements, varying conditions high oxygen or hydrostatic pressure low fugacity are in synthesis. In this review, authors discuss various types cuprate superconductors...

Nanostructured zirconium oxide (ZrO2) film (particle size∼35 nm), electrochemically deposited onto gold(Au) surface, has been used to immobilize 21-mer oligonucleotide probe (ssDNA) specific Mycobacterium tuberculosis by utilizing affinity between oxygen atom of phosphoric group and fabricate DNA biosensor. This DNA-ZrO2/Au bioelectrode, characterized using x-ray diffraction, Fourier transform infrared spectroscopy, cyclic voltammetry, scanning electron microscopy techniques, can be for...

The present work describes electrophoretic fabrication of nanostructured chitosan-zirconium-oxide composite (CHIT-NanoZrO(2)) film (180 nm) onto indium-tin-oxide (ITO)-coated glass plate. This nanobiocomposite has been explored as immobilization platform for probe DNA specific to M. Tuberculosis model biomolecule investigate its sensing characteristics. It is revealed that pH-responsive behavior CHIT and cationic skeleton responsible the movement CHIT-NanoZrO(2) colloids toward cathode...

Fluoride doping in the CeO2 lattice has been achieved by a simple, reliable, reproducible, and safe solution-based method. F-containing retained fluorite structure, its effect confirmed from various analytical techniques such as powder X-ray diffraction, Fourier transform IR, Raman, UV-visible diffuse reflectance, photoluminescence (PL), photoelectron spectroscopy (XPS), scanning electron microscopy-energy-dispersive (EDX) transmission microscopy-EDX analysis. The concentration of fluoride...

Equimolar concentrations of Zr4+ and Bi3+ were chelated with ethylenediaminetetraacetic acid ligand the purpose using it as a precursor to generate pyrochlore-like Bi2Zr2O7. When X-ray amorphous was calcined at 750 °C for 3 h in air, product superstructure reflections identified by powder diffraction (PXRD) along one minor reflection due β-Bi2O3. This phase found be metastable from additional experiments conducted varying calcination conditions. Structural refinement PXRD pattern Le Bail...

Herein, we report for the first time use of ternary oxide nanoheterostructure photocatalysts derived from (Nby, Ti1–y)2CTx MXene in treatment water. Three different compositions binary MXenes, viz., (Ti0.75Nb0.25)2CTx, (Ti0.5Nb0.5)2CTx, and (Ti0.25Nb0.75)2CTx (with Tx = OH, F, Cl), were used as single-source precursor to produce TiNbOx-3:1, TiNbOx-1:1, TiNbOx-1:3 by controlled-atmosphere thermal oxidation. Phase identification Le Bail refinements confirmed presence a mixture rutile TiO2...