L. A. Marusak、L. N. Mulay1980-01-01Physical review. B, Condensed matter
The variation of the periodicity along the $C$ axis (${N}^{\ensuremath{'}}C$) as a function of temperature in ${\mathrm{Fe}}_{9}$${\mathrm{S}}_{10}$, where ${N}^{\ensuremath{'}}$ varies between 5 and 1 over the range 300-600 K, has been investigated. The antiferromagnetic to ferrimagnetic ($\ensuremath{\lambda}$) phas…
Microstructure and Mechanical Properties of SteelsMagnetic Properties and ApplicationsMagnetic Properties of Alloys
G. D. Danilatos1980-01-01Scanning
Abstract A new detection configuration for the Scanning Electron Microscope (SEM) has been devised, which allows the imaging of the surfaces of a specimen in the open room, i.e., at atmospheric pressure. Such a device gives rise to a new microscope: the Atmospheric Scanning Electron Microscope (ASEM). In this configur…
X-ray Spectroscopy and Fluorescence AnalysisElectron and X-Ray Spectroscopy TechniquesPhotocathodes and Microchannel Plates
Alexis Lycourghiotis、C. Defossé、Francis Delannay 等 4 位作者1980-01-01Journal of the Chemical Society Faraday Transactions 1 Physical Chemistry in Condensed Phases
The effect of preparation method, calcination temperature and sodium content on the dispersion of molybdenum on the surface of γ-Al2O3, as well as on the kind of molybdenum species formed thereon, has been studied using diffuse reflectance spectroscopy (d.r.s), X-ray powder analysis (X.r.), X-ray photoelectron spectro…
Catalytic Processes in Materials ScienceCatalysis and Hydrodesulfurization StudiesAdvanced Materials Characterization Techniques
Paul D. Benya1980-01-01Kidney & Blood Pressure Research
Primary cultures of rabbit corneal endothelial cells were labeled with proline and the medium proteins were fractionated by sedimentation through sucrose density gradients. A new collagen, endothelial cell (EC) collagen, was completely separated from type IV collagen without denaturation by this technique. Sodium dode…
Proteoglycans and glycosaminoglycans researchCorneal Surgery and TreatmentsCollagen: Extraction and Characterization
M. Miljak、B. Korin、J. R. Cooper 等 5 位作者1980-01-01Journal de physique
We report magnetic susceptibility (χs) data from 2.6 to 300 K for ten quasi one-dimensional organic conductors, most of which obey the law χs = AT-α with α ≃ 0.7 below about 20 K. Results for irradiated TTF-TCNQ and other évidence indicate that such behaviour can occur for a small concentration of unpaired spins at th…
Physics of Superconductivity and MagnetismAdvanced Condensed Matter PhysicsOrganic and Molecular Conductors Research
N. Mermilliod、L. Zuppiroli、Bertrand François1980-01-01Journal de physique
A measurement of the thermal conductivity and the specific heat of pure and iodine doped samples of polyacetylene (CH)x are presented here. The thermal conductivity of pure (CH)x is about 75 mW/cm . K at room temperature and decreases monotonically to 1.6 mW/cm . K at 25 K. The specific heat dependence with temperatur…
Advanced Battery Materials and TechnologiesIonic liquids properties and applicationsConducting polymers and applications
J.A. Turnbull1980-01-01Radiation Effects
The paper reviews the existing experimental evidence for irradiation induced re-solution and also possible explanations for the mechanism. The importance of re-solution is considered with regard to intragranular bubbles and the accumulation of gas on grain boundaries. It is concluded that re-solution is most effective…
Nuclear reactor physics and engineeringRadioactive element chemistry and processingNuclear Materials and Properties
G. Marwaha、Nafa Singh、V. K. Mathur1980-01-01Radiation Effects
Thermoluminescence spectra of CaS:Bi dosimeter have been recorded for the two glow peaks occuring at 60°C and 200°C. Due to the presence of two groups of traps, retrapping mechanism has been investigated in order to get the best performance out of this dosimeter. The effect of annealing, storage and pre-heating on the…
Luminescence Properties of Advanced MaterialsPerovskite Materials and ApplicationsSolid-state spectroscopy and crystallography
Gin‐ya Adachi、Katsuhiko Tomokiyo、Kenji Sorita 等 4 位作者1980-01-01Journal of the Chemical Society Chemical Communications
Divalent europium complexes with crown ethers give a remarkably intense, blue emission under u.v. radiation.
Magnetism in coordination complexesLanthanide and Transition Metal ComplexesNanocluster Synthesis and Applications
J. J. Benattar、F. Moussa、M. Lambert1980-01-01Journal de physique
The smectic F phase of TBPA is characterized by a stacking of weakly coupled pseudo-hexagonal layers. A careful analysis of the shape of the Debye-Scherrer lines enables a comparison to the theoretical predictions concerning the structure of 2d systems : a correlation length of about 250 A has been found within the la…
Liquid Crystal Research AdvancementsNonlinear Dynamics and Pattern Formation
W. H. Madhusudan、Krishnaswamy Jagannathan、Parthasarathy Ganguly 等 4 位作者1980-01-01Journal of the Chemical Society Dalton Transactions
Rare-earth trioxocobaltates(III), Ln[CoO3], with Ln = Pr, Nd, Tb, Dy, and Yb exhibit low-spin to high-spin transitions of cobalt characterised by a maximum in the Δχ–1 against temperature plots where Δχ is the cobalt contribution to the magnetic susceptibility. The susceptibility behaviour is distinct from that of La[…
Magnetic and transport properties of perovskites and related materialsRare-earth and actinide compoundsAdvanced Condensed Matter Physics
R. W. Munn、R. Silbey1980-01-01Molecular crystals and liquid crystals
A general theory of exciton (and electron) transport in perfect molecular crystals is discussed. The emphasis is on qualitative results and the elucidation of the effect of exciton and phonon bandwidth on the scattering of excitons and on transport. Various microscopic models are discussed in this light.
Perovskite Materials and ApplicationsMolecular Junctions and NanostructuresOrganic and Molecular Conductors Research
Renata Chaves、Maria Helena Amaral、S. Ziółkiewicz1980-01-01Journal de physique
Dark current and spontaneous polarization, obtained from measurements of pyroelectric current, have been used to study the ferro-paraelectric transition in SbSI crystals. The critical exponent of the spontaneous polarization is found to have the value predicted from a mean field theory (β = 0.51 ± 0.02).
Crystal Structures and PropertiesSemiconductor materials and interfacesSolid-state spectroscopy and crystallography
Norman C. Donaldson、Herman R. Gentry、Eveard T. Harrison 等 6 位作者1980-01-01OpenAlex
WHITMAN COUNTY is in the southeastern part of Washington (fig. 1). It has an area of 1,385,370 acres. Most of the county has a rolling to hilly topography and deep soils that formed in silty material deposited by wind. Basalt is the base rock, but there are a few promontories of quartzite, shale, and sandstone. Elevat…
Water Quality and Resources StudiesBotany, Ecology, and Taxonomy StudiesEngineering and Material Science Research
K. D. Kolwicz、M. S. Chang1980-01-01Journal of The Electrochemical Society
Silver halide‐chalcogenide glass composite thin film structures are evaluated as inorganic x‐ray resists at Al line. The sensitivity is shown to be a factor of 2 better than the PMMA 2041 for a 300 nm thick resist layer. A comparable contrast is indicated. A high resolution capability is expected because of the amorph…
Luminescence Properties of Advanced MaterialsGlass properties and applicationsPhase-change materials and chalcogenides
M. P. C. de Vries1980-01-01Communications in Soil Science and Plant Analysis
Results of pot experiments depend much on the environmental conditions under which they are conducted and on “personal factors”; such as the choice of the type of pots, rates of fertilisers applied, the way these fertilisers are applied, growing conditions in the glasshouse, and the decision when to terminate the expe…
Clay minerals and soil interactions
F. Poulin、J. C. Bourgoin1980-01-01Revue de Physique Appliquée
n-type germanium has been irradiated with electrons of various energies in the range 0.5 to 3 MeV. Using transient capacitance measurements we observed four majority carrier traps associated with levels at 0.27 eV (E1), 0.39 eV (E2), 0.35 eV (E4), 0.32 eV (E5) below the conduction band. We have studied the variations…
Electron and X-Ray Spectroscopy TechniquesIon-surface interactions and analysisAdvanced Materials Characterization Techniques
Y. Kitano、Y. Komura、Hideyuki Kajiwara 等 4 位作者1980-01-01Acta Crystallographica Section A
Two-dimensional lattice images have been obtained for the two-, four-, and nine-layer type structures of the Friauf-Laves phase, Mg(Cu0.535Al0.465)2. An intimate correlation is established between the lattice image and the crystal structure. With this relation, layer sequences of disordered stacking regions are determ…
Metallic Glasses and Amorphous AlloysQuasicrystal Structures and Properties
Takayuki Komatsu、Naohiro Soga1980-01-01Journal of Applied Physics
Mössbauer effect measurements were made to study the NiFe2O4 precipitation process from the silicate glass of 50 SiO2–30Na2O–10NiO–10Fe2O3 composition. Both the isomer shift and quadrupole splitting parameters were found to decrease in the NiFe2O4 precipitation process. These decreases were interpreted on the basis of…
Magnetic Properties and Synthesis of FerritesIron oxide chemistry and applicationsMagneto-Optical Properties and Applications
J. M. Schoen1980-01-01Journal of Applied Physics
A model of electromigration failure under pulsed constant-current excitation is derived. Starting with Black’s expression for electromigration failure under dc conditions, the fractional lifetime consumed per infinitesimal time interval is defined as a function of film temperature. The fractional lifetime consumed per…
Electronic Packaging and Soldering TechnologiesCopper Interconnects and ReliabilitySemiconductor materials and interfaces