ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

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
Filter
  • PACS: 42.70.Nq; 42.65.Hw  (1)
  • PACS: 81.10.Fq; 81.30.Dz; 42.70.Nq  (1)
Collection
Keywords
Publisher
Years
  • 1
    Electronic Resource
    Electronic Resource
    Dynamic properties of multiple grating formation in doped and thermally treated lead germanate (1999)
    Springer
    Applied physics 68 (1999), S. 887-891 
    Details
    ISSN: 1432-0649
    Keywords: PACS: 42.70.Nq; 42.65.Hw
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract. During holographic recording in lead germanate (Pb5Ge3O11) crystals two types of refractive-index gratings are observed. One has a very fast response whereas the second builds up comparably slowly. Measurements of diffraction efficiency and two-beam coupling are carried out to study the formation of both gratings and to obtain the relative phase between them. Differently doped and thermally treated samples are divided into four classes due to their different time evolution of diffraction efficiency and of the energy transfer direction during two-beam coupling. The classification depends on doping and treatment. For Ni-doped and thermally treated samples dark and photo conductivities corresponding to the slow grating are determined, indicating that Ni-doping combined with oxidation enhances the properties of the slow grating.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003400050719
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Growth and dielectric properties of congruently melting Ba1-xCaxTiO3 crystals (1997)
    Springer
    Applied physics 65 (1997), S. 301-305 
    Details
    ISSN: 1432-0630
    Keywords: PACS: 81.10.Fq; 81.30.Dz; 42.70.Nq
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: 3 –CaTiO3 is investigated with regard to a congruently melting composition. The liquidus curve is determined from x=0.0 to 0.3, where x is the mole fraction of CaTiO3. It shows a minimum melting point near x=0.23. Ba1-xCaxTiO3 crystals are grown by the Czochralski technique from melts close to this composition. X-ray fluorescence analyses of the crystals indicate a congruently melting composition at x=0.227, corresponding to the observed minimum melting point. At the growth temperature the crystals possess a cubic perovskite-type structure. They undergo a structure change to the ferroelectric tetragonal phase at 98±3 °C, indicated by a sharp peak of the dielectric constant. Down to -120 °C no further phase transition is observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003390050583
    Location Call Number Expected 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...