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
    Rapid thermal annealing effects on InP grown by the LEC method (1992)
    Springer
    Journal of materials science 27 (1992), S. 5635-5639 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract InP crystals, grown by the liquid-encapsulated Czochralski method, were prepared by rapid thermal annealing and were investigated by photoluminescence spectroscopy as a function of annealing time. In the photoluminescence spectra of as-grown samples, the 1.414 eV acceptor-bound peak and the 1.378 eV free-to-acceptor peak dominated. A shift toward higher energy was observed at high excitation intensity for the 1.375 eV peak of the donor-to-acceptor emission of InP. The dominant transition centred at the 1.378 eV peak can be ascribed to zinc impurities in the starting material. Changes in the excitation intensity and the sample temperature resulted in the identification of zinc-related free-to-acceptor transitions where the zinc ionization energy was calculated to be 46 meV. Analysis of the temperature-dependent data yield an activation energy of 47 meV.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00541635
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Applying the Coordinate Tolerance System to Tolerance Stack Analysis Involving Position Tolerance (1999)
    Springer
    The international journal of advanced manufacturing technology 15 (1999), S. 404-408 
    Details
    ISSN: 1433-3015
    Keywords: Key words.Bonus; Coordinate tolerance system; Geometric dimensioning and tolerancing; Position; Shift; Tolerance stack analysis; Tolerance zone
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Geometric dimensioning and tolerancing (GDT) has been playing an important role in specifying the geometry of part features during the product design stage. Tolerance stack analysis is then used to study the conformity of the parts to the tolerance zone. Performing stack analysis is time consuming because geometric tolerances are complex to compute. This paper presents a technique to formulate the bonus and shift tolerances (due to positional callout) and convert them to equal bilateral expressions as in a coordinate tolerance system. An example is used to demonstrate the effectiveness of the expressions. The usage of the expressions is less conceptual and this makes the application simple and direct. Most importantly, the results are shown to be accurate and reliable.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001700050083
    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...