Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Growth of YBaCuO thin films on random and (100) aligned ZrO2 substrates (1989)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 55 (1989), S. 1792-1794 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The growth quality of thin, superconducting YBaCuO films has been compared on random and (100) oriented yttrium-stabilized zirconia substrates using x-ray diffraction and ion channeling experiments. Superior growth is observed on (100) substrates with narrow mosaic distributions (0.4°) and a minimum yield value of 10% in the channeling experiment. The lattice matching required for epitaxial growth is achieved by azimuthal adjustment of the film plane with respect to the substrate. The superior growth is reflected in the film properties like the critical current density yielding values of 2×106 A/cm2 at 77 K.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.102320
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Growth characterization of YBa2Cu3O7−x thin films on (100) MgO (1989)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 55 (1989), S. 310-312 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The growth features of YBa2Cu3O7−x thin films on (100) MgO substrates were studied by He ion channeling and x-ray diffraction measurements. A minimum yield value of 7% at 2 MeV He ion energy and a standard deviation of the crystallite misorientation of only 0.1° show that epitaxial growth (c-axis oriented) is achieved despite a large lattice mismatch of about 9% between the film and the substrate. Detailed studies of the energy dependence of the dechanneling yield at the film-substrate interface for films of different thickness reveal the presence of dislocations probably formed by strain relief in the initial state of growth. Stacking faults appear as the main defect structure in the bulk of the films.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.102413
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Preparation and superconducting properties of ultrathin YBa2Cu3O7−x films (1989)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 54 (1989), S. 2367-2369 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Ultrathin films of YBa2Cu3O7−x with thicknesses down to 2 nm were grown on(100)SrTiO3 and (100)MgO by inverted cylindrical magnetron sputtering. Metallic behavior and zero resistance temperatures above 4.2 K were obtained in 3-nm-thick films on SrTiO3. Thinner films revealed temperature-activated conductivity and only partial transitions to superconductivity due to inhomogeneities in the film morphology. On MgO, the critical film thickness leading to deteriorations of the transport properties was 6 nm. An analysis of the fluctuation-enhanced conductivity near Tc in terms of the Aslamazov–Larkin theory [Phys. Lett. A 26, 238 (1968)] revealed three-dimensional behavior even in the thinnest fully superconducting films.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.101530
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Analysis of holographic fringe formation and holospeckle interferometry (1989)
    Springer
    Journal of nondestructive evaluation 8 (1989), S. 77-95 
    Details
    ISSN: 1573-4862
    Keywords: holography ; holographic interferometry ; holospeckle interferometry ; coherent optical methods ; strain measurement
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00565633
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    An analysis of postsynaptic potentials of tectal neurons of the frog: correlation with impulses recorded from the terminals of retinotectal afferents (1988)
    Springer
    Experimental brain research 70 (1988), S. 429-432 
    Details
    ISSN: 1432-1106
    Keywords: Optic tectum ; Frog ; Monosynaptic activation ; “On-off” retinal fiber ; Pulse-analogue correlation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The purpose of this study is to examine the synaptic action between terminals of retinal ganglion cell axons and tectal neurons. To accomplish this, an extracellular single unit identified as retinotectal fiber was first isolated from the superficial layer of the optic tectum and intracellular responses were recorded from a tectal neuron in the vicinity of the extracellular recording electrode. “On-off” retinal fibers and both E-E (EPSP at “on” and “off” of diffuse light) and EI-EI type (EPSP-IPSP combination at “on” and “off” of diffuse light) tectal neurons were selected for the pre- and postsynaptic pair. Postsynaptic responses to a small moving square were averaged by triggering with the isolated presynaptic impulses. The latency of the resultant EPSPs indicated that most of the E-E and EI-EI type tectal neurons were monosynaptically activated by “on-off” retinal fibers. One of the E-E type tectal neurons was identified as a large ganglionic neuron in layer 8.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00248367
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Assay for thymidine incorporation into anchorage dependent or independent cells without filtration or cell harvesting (1989)
    Springer
    Methods in cell science 12 (1989), S. 47-51 
    Details
    ISSN: 1573-0603
    Keywords: DNA synthesis ; erythropoietin ; cell proliferation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Methods are presented for the assay of [3H]thymidine incorporation into anchorage-dependent cells (3T3 fibroblasts) using 96-well microplates. The plated cells remain in the wells throughout the procedure. In the final step, trichloroacetic acid-precipitated materials are hydrolyzed directly in the wells and aliquots are taken for counting. The same method is used for anchorage-independent cells (K562 or liver erythroid cells) but the incubations are carried out in 96-well-matched micro test tubes. The cells are washed from nonincorporated thymidine by centrifugation, and DNA is hydrolyzed as indicated for the anchorage-dependent cells. These methods avoid the use of expensive and time-consuming cell harvesting machines and the problems of quantitative transfer and filtration of precipitates. At the same time, the small incubation volumes decrease the cost of reagents, growth factors, and tissue culture media.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01404641
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Why terminators are UAA UAG and UGA? (1986)
    Springer
    Origins of life and evolution of the biospheres 16 (1986), S. 263-264 
    Details
    ISSN: 1573-0875
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02422016
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Gyrotron traveling wave amplifier with out-ridged waveguide (1986)
    Springer
    International journal of infrared and millimeter waves 7 (1986), S. 71-98 
    Details
    ISSN: 1572-9559
    Keywords: gyro-TWA ; ridged waveguide
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The out-ridged waveguide is proposed for the use of gyrotrons operating at higher harmonics of electron gyrofrequency. Eigenvalues and the associated field components of the out-ridged waveguide are obtained with Ritz-Galerkin method. The prominent advantages of the out-ridged waveguide over the existing waveguide structures used in gyrotrons include the simplicity in manufacture, freedom from local modes, good separation of lower order modes, high power handling ability, and good beam-field coupling at higher harmonics of the electron gyrofrequency. Gain-frequency functional curves of the gyrotron traveling wave amplifiers with the out-ridged waveguide and some other waveguide structures are computed numerically by employing the general analytical results developed in [15].
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01011063
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...