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
Filter
  • 78.30  (1)
  • Brillouin spectroscopy  (1)
  • PACS. 77.80.Bh Phase transitions and Curie point - 77.22.Gm Dielectric loss and relaxation - 78.30.-j Infrared and Raman spectra  (1)
  • n-alkane  (1)
Source
Material
Years
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    The elastic properties of hexatriacontane single crystals at their various phase transitions (1983)
    Springer
    Colloid & polymer science 261 (1983), S. 409-411 
    Details
    ISSN: 1435-1536
    Keywords: n-alkane ; single crystal ; elastic tensor ; phase transition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract For the first time directly measured elastic tensor components of C36H74 single crystals are presented as a function of temperature. The data are compared to theoretical results obtained for polyethylene.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01418214
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Structure transformation behaviour of polymer melts investigated by Brillouin spectroscopy (1981)
    Springer
    Colloid & polymer science 259 (1981), S. 215-219 
    Details
    ISSN: 1435-1536
    Keywords: Phasetransition ; Polymer-melt ; Brillouin spectroscopy ; Viscosity-measurements
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01381763
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    The ferroelastic transition of betaine fumarate (1995)
    Springer
    The European physical journal 97 (1995), S. 133-138 
    Details
    ISSN: 1434-6036
    Keywords: 62.20.D ; 78.30 ; 64.70.K
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Investigations of polarized Raman spectra of orthorhombic betaine fumarate crystals revealed the existence of two low-frequency optic modes which soften slightly on approaching the ferroelastic transition temperatureT c ≈194 K. The eigenvectors of these modes withB 1g -andB 2g -symmetry, respectively, are coupled bilinearly to strains of corresponding symmetries leading to renormalized elastic moduli. It is shown that these couplings account quantitatively for the temperature dependences of the modulic 55andc 66and eventually lead to a ferroelastic transition and a spontaneous shear straine 5s .By optical and dielectric measurements it is confirmed that the transition is of second order and follows a classical Landau behaviour with a critical exponent of the order parameter of 0.5 within experimental error.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01317597
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Investigations on the soft-mode mechanism of the ferroelectric phase transition in (1998)
    Springer
    The European physical journal 5 (1998), S. 163-168 
    Details
    ISSN: 1434-6036
    Keywords: PACS. 77.80.Bh Phase transitions and Curie point - 77.22.Gm Dielectric loss and relaxation - 78.30.-j Infrared and Raman spectra
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: Dielectric and Raman spectroscopic measurements have been performed to investigate the ferroelectric phase transition in . Single crystals were grown by the zone melting method. The frequency dependence of the dielectric permittivity from 1 MHz to 1 GHz has been studied in a temperature range between 265 and 285 K. A Debye like dielectric dispersion was found, showing a critical slowing down around K. Polarized Raman spectra have been taken between 220 and 310 K. Two softening modes have been found, one of A- and another one of B / B g-symmetry. The phase transition mechanism in can be classified as partially order-disorder and partially displacive, confirming former structural results. It resembles strongly that of monoclinic .
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100510050430
    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...