Materials Literature
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Red light emitting cubic Y 1.95 Eu 0.05 O 3 nanophosphors have been synthesized by a low temperature solution combustion method using ethylene diamine tetra acetic acid (EDTA) as fuel. The systematic studies on the effect of calcination temperature on its structural, photoluminescence (PL), and thermoluminescence (TL)…
We found a phase transition in the normal state of superconducting carbide, Mo 3 Al 2 C by nuclear magnetic resonance (NMR) measurement. At ~130 K the sharp central NMR line broadens and has additional broad components at the foot. In addition, the Knight shift and the spin-lattice relaxation rate exhibit a significan…
This paper examines the densification of the pore space of a carbon-carbon composite material through methane pyrolysis at a reduced pressure and the dynamics of the pyrolytic saturation process. The morphology and microstructure of the pyrolytic carbon are compared to those of the main components of the parent carbon…
Abstract An amorphous carbon (a-C) semiconductor was prepared by the pyrolysis of naphthalene in the presence of AlCl3 under a nitrogen gas flow. Electrical properties, such as the Seebeck coefficient (S) and electrical conductivity (σ), of the a-C materials were studied as a function of the heat treatment temperature…
We have fabricated the thermoelectric generator devices from 100 alternating layers of SiO 2 /SiO 2 +CoSb superlattice thin films using the ion beam–assisted deposition. Rutherford backscattering spectrometry was used for quantitative elemental analysis of Si, Co, and Sb in the multilayer films. The thin films were th…
In this report, the synthesis of zinc ferrite ( ZnFe 2 O 4 ) by co-precipitation method has been presented along with its subsequent characterization by using X-ray diffraction (XRD), vibrating sample magnetometer (VSM) and electron spin resonance (ESR) techniques. The obtained XRD results of as-synthesized sample ind…
Penelitian ini menggunakan metode eksperimen. Obyek eksperimen pada penelitian ini adalah plat baja karbon rendah (Baja ST 37) berbentuk plat persegi dengan dimensi p x l x t. Penelitian ini melalui beberapa tahapan yaitu, persiapan eksperimen dan pelaksanaan eksperimen. Persiapan eksperimen meliputi persiapan benda k…
We study thermal transport in a classical one-dimensional Heisenberg model employing a discrete-time odd-even precessional update scheme. This dynamics equilibrates a spin chain for any arbitrary temperature and finite value of the integration time step $\ensuremath{\Delta}t$. We rigorously show that in presence of dr…
The doping effects of low melting-point nonmagnetic Sb 3+ ions on the microstructure and electromagnetic properties of Mn–Zn ferrites were studied. All the samples were prepared by traditional ceramic technique. According to the investigation on the microstructure, it was found that all the samples consisted of ferrit…
Abstract Gold nanoparticles (GNPs) have gained in prominence within the field of nanomedicine with recent advancement of several embodiments to clinical trials. To ensure their success in the clinic it has become increasingly clear that a deeper understanding of the biological interactions of GNPs is imperative. Since…
Abstract A review of significant investigations reported on simulating the nucleation and growth processes of carbon nanotubes (CNTs) using different modeling techniques is presented here. Special emphasis is given to the chemical vapor deposition method, being the cheapest and most versatile of the fabrication method…
We compare the kinetics of the formation of an ordered structure in the Cu-49 at % Pd alloy in various initial states and demonstrate that the alloy can be brought into a single-phase, B 2-ordered state, at variance with the commonly accepted Cu-Pd phase diagram. The alloy in this structural state has an extremely low…
Superconductivity (SC) and long-range ferromagnetism (FM) are mutually antagonistic, thus in general SC does not coexist with FM. In this mini-review, however, we will show that such a coexistence can inhabit several iron pnictide systems, including EuFe 2 (As 1− x P x ) 2 , Eu(Fe 1− x Co x ) 2 As 2 , Eu(Fe 1− x Ru x…
Various methods were employed to prepare precipitated calcium carbonate (PCC) particles. Particle size and morphology were dependent on reaction conditions as well as temperature, reagents and stirring, either mechanical or by ultrasound probe sonication. Sonication helped to reduce the size of CaCO3 particles as well…
A method has been proposed for the preparation of nickel ferrite nanoparticles in a system of direct sodium dodecyl sulfate micelles using ion flotation. Amorphous nickel ferrite nanoparticles with the overall composition x NiFe 2 O 4 · y Fe 2 O 3 · z H 2 O, containing dodecyl sulfate anion impurities, have been prepa…
Ca 0.5 Zr 2 (PO 4 ) 3 :Er/Yb and Ca 0.75 Zr 2 (PO 4 ) 2.5 (SiO 4 ) 0.5 :Er/Yb compounds have been prepared and their luminescence properties and biocompatibility have been investigated. We found synthesis conditions that ensured phase homogeneity and formation of nanopowders. Their luminescence properties have been st…
A novel method for temperature dependence of order parameter calculations at different wavelengths through birefringence measurements for ferroelectric liquid crystals (S)-(-)-2-methylbutyl 4′-(4″-n-alkanoyloxy benzoyloxy) biphenyl-4-carboxylates (where n = 16 and 18) has been proposed using image analysis and linear…
Interlayer Rb(+) of the perovskite-type layered oxyfluoride RbSrNb(2)O(6)F was ion-exchanged with H(+), and the protonated phase was reacted with aqueous solution of tetrabutylammonium hydroxide to exfoliate it into nanosheets. The resulting nanosheet suspension exhibits Tyndall scattering of a laser beam, indicating…
The effect of hydrogen bonding on the phase behavior of PS-based block copolymer and poly(styrene-graft-acrylic acid) (PS-g-PAA) blends was investigated. The presence of hydrogen bonding enhanced the compatibility of two copolymers. This caused PS-g-PAA to intervene in the interface between microdomains of the block c…
The morphological evolution of PANI helixes was achieved without the use of chiral dopants, but by a facile process through the generation of onion-like multi-lamellar vesicles used as a novel soft-template and a liquid crystal acting as a promoter for PANI polymerization and self-assembly, which is a breakthrough for…