Abstract
The motivation for this work is the investigation of structural phase transitions by means of deformation measurements. The universal X-ray diffractometer AMADEUS (Automatisches Mehrachsen Diffraktometer für Einkristalluntersuchungen) is used in the configuration of a double crystal diffractometer in the dispersion free arrangement. This set up provides high resolution for deformation measurements. The profile of the Bragg-peak and double crystal topographies yield information about the sample quality. TGSe exhibits nearly tricritical behaviour with a transition temperature of 295.9 K. From the temperature dependence of the deformation, the thermal expansion is determined in a temperature range of 100 to 310 K. The results are compared with dielectric data from the literature. The thermodynamic behaviour can be suitably described by the Landautheory. The data fit especially well to the theory of Albera.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
R.W. James, The optical principles of the diffraction of X-Rays, Bell and Sons, London (1962).
A. Freund, Dissertation 1973 T.U. München and ILL Grenoble.
J. Grindlay, Introduction to the Phenomenological Theory of Ferroelectricity. Pergamon Press (1970).
J. Stankowska, I. Polovinko, J. Stankowski, Ferroelectrics 21, 529 (1978).
H. Schmitt, H.E. MUser, O. Mengelkoch, W. Sterta, 4. Europen Meeting on Ferroelectricity (1979), Ferroelectrics in press.
K.H. Ehses, H. Meister, Ferroelectrics 20, 287 (1978); 4. European Meeting on Ferroelectricity (1979) in press.
K.H. Ehses, H. Meister, J. Albers, phys. stat. sol (b) 91, 509 (1979).
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1981 Plenum Press, New York
About this chapter
Cite this chapter
Ehses, K.H., Wern, H., Schildkamp, W. (1981). The Critical Behaviour of Ferroelectric Triglycineselenate Investigated with the X-Ray Double Crystal Diffractometer Amadeus. In: Devreese, J.T., Lemmens, L.F., Van Doren, V.E., Van Royen, J. (eds) Recent Developments in Condensed Matter Physics. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-1086-0_18
Download citation
DOI: https://doi.org/10.1007/978-1-4684-1086-0_18
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4684-1088-4
Online ISBN: 978-1-4684-1086-0
eBook Packages: Springer Book Archive