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Magnetoelectric composite ceramics of nickel ferrite and lead zirconate titanate viain situprocessing

Dandan Wu、Weihua Gong、Haijin Deng 等 4 位作者2007-08-03Journal of Physics D Applied Physics

Magnetoelectric (ME) composite ceramics of NiFe 2 O 4 (NFO) and lead zirconate titanate (PZT) were synthesized by a simple in situ processing based on a sol–gel method followed by a conventional sintering. X-ray diffraction patterns and scanning electron microscopy images revealed that this processing can produce two…

Ferroelectric and Piezoelectric MaterialsMultiferroics and related materialsDielectric properties of ceramics

Direct Syntheses of Mixed Ion and Electronic Conductors La4Ni3O10 and La3Ni2O7 from Nanosized Coprecipitates

Xiaole Weng、Paul Boldrin、Isaac Abrahams 等 5 位作者2007-08-03Chemistry of Materials

Nanoparticle coprecipitates of lanthanum hydroxide and nickel hydroxide were synthesized in a continuous hydrothermal flow synthesis system. Two such coprecipitates with the appropriate La:Ni molar ratios were subsequently directly converted to phase-pure La4Ni3O10 and La3Ni2O7, respectively, via a single heat-treatme…

Catalytic Processes in Materials ScienceMagnetic and transport properties of perovskites and related materialsElectronic and Structural Properties of Oxides

Nanokristalle mit ungewöhnlichen Formen – eine vielversprechende Katalysatorklasse

Yujie Xiong、Benjamin J. Wiley、Younan Xia2007-08-03Angewandte Chemie

Auf Form und Größe kommt es an: Edelmetall-Nanokristalle sind wegen der hohen Aktivität ihrer Oberflächenatome, die aus großen Oberfläche/Volumen-Verhältnissen und großen Oberflächenenergien resultiert, attraktive Kandidaten für den Einsatz als Katalysatoren. Ein Beispiel sind Platin-Nanokristalle, die in der ungewöhn…

Gold and Silver Nanoparticles Synthesis and ApplicationsNanocluster Synthesis and ApplicationsNanomaterials for catalytic reactions

Magnetic spin excitations in diluted ferromagnetic systems: The case of Ga 1−x Mn x As

G. Bouzerar2007-08-03Europhysics Letters (EPL)

By using an approach based on the Self-Consistent Local Random Phase Approximation (SC-LRPA) we calculate the magnetic excitation spectrum in diluted/disordered ferromagnetic systems. In previous studies, the SC-LRPA was shown to be reliable for the determination of the Curie temperature. In this letter, we now demons…

Physics of Superconductivity and MagnetismMagnetic properties of thin filmsMagnetic and transport properties of perovskites and related materials

Microstructural Characterization and Role of Glassy Layer Developed on Inconel 690 During a Nuclear High‐Level Waste Vitrification Process

Pranesh Sengupta、C.P. Kaushik、Raman K. Mishra 等 4 位作者2007-08-03Journal of the American Ceramic Society

The interaction of Inconel 690 metallic components with borosilicate melt leads to development of a partially amorphous and a partially crystalline layer within borosilicate melt adjacent to the interface. Such a heterogeneous layer is referred to here as a glassy layer. In the present investigation, the glassy layer…

Glass properties and applicationsMetallurgical Processes and ThermodynamicsNuclear materials and radiation effects

Effect of annealing ambient on the ferromagnetism of Mn-doped anatase TiO2films

Jianping Xu、Jianfeng Wang、Yingbin Lin 等 9 位作者2007-08-03Journal of Physics D Applied Physics

The magnetic properties of anatase Ti1?xMnxO2 (0 < x < 0.06) films prepared by sol?gel spin coating annealed in air and vacuum have been investigated. Room temperature ferromagnetism was observed in all the films. Enhancement of ferromagnetism is revealed in the films annealed in vacuum. The magnetic moment of the fil…

ZnO doping and propertiesGas Sensing Nanomaterials and SensorsElectronic and Structural Properties of Oxides

Intrinsic electrical, magnetic, and thermal properties of single-crystallineAl64Cu23Fe13icosahedral quasicrystal: Experiment and modeling

J. Dolinšek、S. Vrtnik、M. Klanjšek 等 10 位作者2007-08-03Physical Review B

In order to test for the true intrinsic properties of icosahedral $i\text{\ensuremath{-}}\mathrm{Al}\text{\ensuremath{-}}\mathrm{Cu}\text{\ensuremath{-}}\mathrm{Fe}$ quasicrystals, we performed investigations of magnetism, electrical resistivity, thermoelectric power, and thermal conductivity on a single-crystalline $…

Quasicrystal Structures and PropertiesMineralogy and Gemology Studies

Mechanical and microstructural characterization of high aspect ratio through-wafer electroplated copper interconnects

Pradeep Dixit、Luhua Xu、Jianmin Miao 等 5 位作者2007-08-03Journal of Micromechanics and Microengineering

In this paper we present the mechanical and microstructural characterization results of through-wafer electroplated copper interconnects. Copper was deposited in very high aspect ratio (∼15), narrow (15 µm) through-vias in silicon, which were earlier created by deep reactive ion etching. The two critical mechanical pr…

Electronic Packaging and Soldering Technologies3D IC and TSV technologiesCopper Interconnects and Reliability

Epitaxial Multiferroic BiFeO3Thin Films: Progress and Future Directions

Ying‐Hao Chu、Lane W. Martin、Q. Zhan 等 9 位作者2007-08-03Ferroelectrics

We write this article in honor of Professor Vitaly L. Ginzburg, truly the father of the field of ferroelectricity. This article serves as a review of the current state of research pertaining to multiferroic BiFeO 3 thin films. In this review we will delve into details of the growth of BiFeO 3 thin films and the use of…

Ferroelectric and Piezoelectric MaterialsMultiferroics and related materialsAdvanced Condensed Matter Physics

Investigations on the growth, optical behaviour and factor group of an NLO crystal: L‐alanine alaninium nitrate

A. Aravindan、P. Srinivasan、N. Vijayan 等 5 位作者2007-08-03Crystal Research and Technology

Abstract Amino acid family crystals exhibit excellent nonlinear and electro‐optical properties. L‐alanine alaninium nitrate (LAAN) single crystal belonging to the amino acid group was grown by slow cooling solution growth technique. The High resolution X‐ray diffraction (HRXRD), Fourier transform infrared (FTIR) spect…

Crystal structures of chemical compoundsNonlinear Optical Materials ResearchSolid-state spectroscopy and crystallography

Controlled Growth of SnO2 Hierarchical Nanostructures by a Multistep Thermal Vapor Deposition Process

Shuhui Sun、Guowen Meng、Gaixia Zhang 等 5 位作者2007-08-03Chemistry - A European Journal

Branched and sub-branched SnO(2) hierarchical architectures in which numerous aligned nanowires grew on the surface of nanobelt substrates have been obtained by a multistep thermal vapor deposition route. Branch size and morphology can be controlled by adjusting the temperature and duration of growth. The same approac…

ZnO doping and propertiesGas Sensing Nanomaterials and SensorsNanowire Synthesis and Applications

Photoinduced Electron Transfer on Aqueous Carbon Nanohorn–Pyrene–Tetrathiafulvalene Architectures

Georgia Pagona、Atula S. D. Sandanayaka、Alan Maignè 等 11 位作者2007-08-03Chemistry - A European Journal

Water-soluble carbon-nanohorn-tetrathiafulvalene (CNH-TTF) nanoensembles were prepared by utilizing positively charged pyrene as an assembly medium and characterized by spectroscopy and electron microscopy. Electronic interactions within the nanoensemble were probed by optical spectroscopy, indicating electron transfe…

Magnetism in coordination complexesPorphyrin and Phthalocyanine ChemistryOrganic and Molecular Conductors Research

Influence of the draw ratio on the tensile and fracture behavior of NMMO regenerated silk fibers

Paola Corsini、José Pérez‐Rigueiro、Gustavo V. Guinea 等 8 位作者2007-08-03Journal of Polymer Science Part B Polymer Physics

Abstract The tensile properties and fracture surfaces of N ‐methylmorpholine‐ N ‐oxide (NMMO) regenerated silk fibroin fibers produced with a range of draw ratios has been characterized and related to their microstructure with data obtained from Raman spectroscopy and birefringence measurements. The spinning process a…

Electrospun Nanofibers in Biomedical ApplicationsSilk-based biomaterials and applicationsSilkworms and Sericulture Research

Multirotations of (Anilinium)([18]Crown‐6) Supramolecular Cation Structure in Magnetic Salt of [Ni(dmit)2]−

Sadafumi Nishihara、Tomoyuki Akutagawa、Daisuke Sato 等 6 位作者2007-08-03Chemistry - An Asian Journal

A solid-state dynamic supramolecular structure consisting of (anilinium)([18]crown-6) was arranged as the cation in a salt of [Ni(dmit)2]- (dmit = 2-thioxo-1,3-dithiole-4,5-dithiolate). With the ammonium moiety of anilinium located within the cavity of [18]crown-6, a hydrogen-bonded supramolecular structure is formed,…

Crystallography and molecular interactionsLuminescence and Fluorescent MaterialsOrganic and Molecular Conductors Research

Fabrication of Gradient Pore TiO 2 Sheets by a Novel Freeze–Tape‐Casting Process

Linlin Ren、Yu‐Ping Zeng、Dongliang Jiang2007-08-03Journal of the American Ceramic Society

Gradient pore structure TiO 2 sheets were fabricated by a novel freeze–tape‐casting process. Aqueous TiO 2 ceramic slurries were prepared by the traditional tape‐casting processing and were then cast onto an aluminum foil carrier. The slurries were immediately frozen on the substrate, whose temperature was about −18°C…

Bone Tissue Engineering MaterialsAdvanced ceramic materials synthesisAdditive Manufacturing and 3D Printing Technologies

Surface Tension Studies of Alkyl Esters and Epoxidized Alkyl Esters Relevant to Oleochemically Based Fuel Additives

Kenneth M. Doll、Bryan R. Moser、Sevim Z. Erhan2007-08-03Energy & Fuels

There are several reports on the synthesis of fuel additives based on oleochemical esters, and physical data on some of these compounds is lacking. Herein, we report the surface tension of several epoxidized oleochemicals and their comparable fatty esters, at temperatures between 25 and 60 °C. Surface tensions of the…

Surface Modification and SuperhydrophobicityBiodiesel Production and ApplicationsPolymer composites and self-healing

Nonlinear rheological behavior of silica filled solution‐polymerized styrene butadiene rubber

Jin Sun、Yihu Song、Qiang Zheng 等 6 位作者2007-08-03Journal of Polymer Science Part B Polymer Physics

Abstract The reinforcement and nonlinear viscoelastic behavior have been investigated for silica (SiO 2 ) filled solution‐polymerized styrene butadiene rubber (SSBR). Experimental results reveal that the nonlinear viscoelastic behavior of the filled rubber is similar to that of unfilled SSBR, which is inconsistent wit…

Polymer Nanocomposites and PropertiesForce Microscopy Techniques and ApplicationsRheology and Fluid Dynamics Studies

Growth of Highly Crystalline CaMoO4:Tb3+ Phosphor Layers on Spherical SiO2 Particles via Sol−Gel Process: Structural Characterization and Luminescent Properties

Guangzhi Li、Zhenling Wang、Zewei Quan 等 5 位作者2007-08-03Crystal Growth & Design

Highly crystalline CaMoO 4:Tb 3+ phosphor layers were grown on monodisperse SiO 2 particles through a simple sol−gel method, resulting in formation of core−shell structured SiO 2 @CaMoO 4:Tb 3+ submicrospheres. The resulting SiO 2 @CaMoO 4:Tb 3+ core−shell particles were fully characterized by powder X-ray diffraction…

Advanced Photocatalysis TechniquesLuminescence Properties of Advanced MaterialsAmmonia Synthesis and Nitrogen Reduction

Controlled synthesis of various morphologies of nanostructured zinc oxide: flower, nanoplate, and urchin

Tongming Shang、Jianhua Sun、Quanfa Zhou 等 4 位作者2007-08-03Crystal Research and Technology

Abstract Nanoplates, flower‐like nanostructure of ZnO were successfully synthesized by employing ZnSO 4 ·7H 2 O, NaOH as the starting materials at 120°C under hydrothermal condition. Keeping the same parameters, ZnO urchin shape was obtained by addition of vitamin C at 190°C. Characterizations were carried out by X‐ra…

ZnO doping and propertiesGas Sensing Nanomaterials and SensorsCopper-based nanomaterials and applications

Controlled Synthesis, Growth Mechanism, and Properties of Monodisperse CdS Colloidal Spheres

Xin‐Hao Li、Ji‐Xue Li、Guodong Li 等 5 位作者2007-08-03Chemistry - A European Journal

Highly monodisperse submicrometer CdS colloidal spheres (CSCS) with a controllable and tunable size (between 80 and 500 nm) have been synthesized through a facile solvothermal technique. Owing to the controllability of the reaction process, the growth mechanism of the colloidal spheres has been elucidated in detail. T…

Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsPhotonic Crystals and Applications