Materials Literature
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We utilize a multifunctional atomic force microscope (AFM) cantilever applying highly localized temperature and electric fields to interrogate transport in single-wall carbon nanotube field-effect transistors (CNTFETs). The probe can be operated either in contact with the CNT, in intermittent contact, or as a Kelvin p…
Abstract In the paper we present and discuss magnetic properties of the Gd(Ni 1– x Fe x ) 3 crystalline compounds and their ball‐milled powders in a context of the magnetocaloric effect (MCE). Moreover, based on the obtained results, powders and composites with non‐magnetic (Cu) and magnetic (Fe) additions were prepar…
In this work an approach for modeling a transformer core taking into account magnetic hysteresis is presented. For this purpose, the inverse vector Jiles-Atherton hysteresis model is incorporated in a 2D finite element code. This model allows writing naturally the differential reluctivity tensor which can be directly…
The thermodynamic properties of the ferromagnetic perovskite ${\text{YTiO}}_{3}$ are investigated by thermal expansion, magnetostriction, specific-heat, and magnetization measurements. The low-temperature spin-wave contribution to the specific heat, as well as an Arrott plot of the magnetization in the vicinity of the…
Abstract Lithiated 4‐methyl‐2‐[(trimethylsilyl)amino]pyridine (Ap TMS H) undergoes a salt metathesis reaction with [ScCl 3 (thf) 3 ] and FeCl 3 , at low temperature in thf, to yield the homoleptic complexes [Sc(Ap TMS ) 3 ] ( 1 ) and [Fe(Ap TMS ) 3 ] ( 2 ). An analogous reaction with MnCl 2 , CoCl 2 and FeCl 2 using t…
In this paper, the vector magnetic property is explained first. And this paper also presents the magnetic characteristic analysis of the electrical machines by using the vector magnetic hysteretic E&S model. Furthermore, the dynamic E&S model, which can analyze the eddy current effect due to the distorted magnetic flu…
Oxygen diffusion coefficients, D, have been measured in poly(methyl methacrylate) (PMMA) films containing small amounts of a cinnamic acid derived cross-linker. In the technique employed, the time evolution of oxygen sorption into the film was monitored using the phosphorescence of singlet oxygen as a spectroscopic pr…
Vaterite is one of three polymorphs of calcium carbonate (CaCO 3 ) found in nature, the others being calcite and aragonite. Here the formation of vaterite from decomposition of ikaite (CaCO 3 ·6H 2 O) was investigated using synchrotron powder diffraction and scanning electron microscopy. The crystallite sizes of vater…
In this study, MD simulations of some face centred cubic (FCC) metals at nano-scale and under uniaxial tension were carried out. The effects of different loading rates of 5-200 m/s at constant temperature on the tensile behaviour and stress-strain curves were studied. The potential used in these simulations was Sutton…
This paper discusses the numerical implementation of a new vector hysteresis model, called the Della Torre, Pinzaglia and Cardelli (DPC) model, introduced as general hysteresis vector model for both isotropic and anisotropic magnetic materials. The present implementation is a 2-D one that uses any kind of hysteron des…
Phosphinoyl Grignard-based substitutions on 2,6-bis(chloromethyl)pyridine followed by N-oxidation of the intermediate 2,6-bis(phosphinoyl)methylpyridine compounds with mCPBA give the target trifunctional ligands 2,6-bis[bis(2-trifluoromethylphenyl)phosphinoylmethyl]pyridine 1-oxide (2a) and 2,6-bis[bis(3,5-bis(trifluo…
The prospect of realizing nanoscale transistors using individual semiconducting carbon nanotubes offers enormous potential, both as an alternative to silicon technology beyond conventional scaling limits and as a way to implement high-speed devices and circuits on flexible substrates. A significant challenge is the re…
Nanotechnology, the commercial development of engineered nanomaterials, promises breakthrough innovations by enhancing the performance of existing consumer products and enabling development of new devices, architectures, and applications. Although these materials and applications are being developed at an explosive pa…
We show an unconscious self-assembling ability of block copolymers, that is, spontaneous perpendicular orientation of nanocylinders in a block copolymer thick film of polystyrene- block -polyethylenebutylene- block -polystyrene (SEBS) triblock copolymer. The perpendicular orientation of cylinders was obtained when the…
A method of magnetic field analysis which takes eddy currents into account in laminated steel core is extended into loss calculation to investigate the loss reduction of reactor connected to inverter power supply. In the proposed method, the iron loss in the laminated core can be calculated considering the flux and ed…
We study the tunnel magnetoresistance (TMR) and spin transport in ferromagnetic graphene junctions composed of ferromagnetic graphene (FG) and normal graphene (NG) layers. It is found that the TMR in the FG/NG/FG junction oscillates from positive to negative values with respect to the chemical potential adjusted by th…
Transverse-field muon-spin rotation measurements performed on two samples of LiFeAs demonstrate that the superfluid stiffness of the superconducting condensate in relation to its superconducting transition temperature is enhanced compared to other pnictide superconductors. Evidence is seen for a field-induced magnetic…
Catalytic performances of nanostructured mesoporous TiO 2 –ZrO 2 mixed oxides impregnated by Pd and/or Au were studied in toluene total oxidation in a fixed bed microreactor and with “operando” DRIFT. Mesoporous TiO 2 –ZrO 2 mixed oxides with various Ti:Zr mole ratio of 80/20, 50/50 and 20/80, high surface areas were…
White light emission across the extended visible region of the electromagnetic spectrum from the ZnO–porous silicon (PS) nanocomposite is reported. Nanocrystallites of ZnO were grown inside the spongy structures of PS by the chemical route of sol–gel spin coating. The property of the material arises from versatile int…
Abstract Zwitterionic “sandwiches” : Combined preparative, spectroscopic and theoretical studies on the syntheses, structures and electronic properties of zwitterionic iron(II) and cobalt(II) sandwich complexes [M( Me Tpmd) 2 ] containing κ 3 N ‐coordinated tris(pyrazolyl)methanide ligands ( Me Tpmd; see picture) are…