volume 26 issue 1 pages 359-376

Electron diffraction study of inter‐ and intrapolytypic phase transitions in transition metal dichalcogenides. I. Electron diffraction patterns

J. Van Landuyt 1
G. Van Tendeloo 1
S Amelincky 1
Publication typeJournal Article
Publication date1974-11-16
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ISSN00318965, 1521396X
Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Abstract
Structural changes, occurring in the metastable IT modification of TaS2, have been studied by means of electron diffraction and correlated with changes in the electric and magnetic properties. The IT form was found to adopt a superstructure of the CdI2 structure at low temperatures and two different distortion modulated structures of the CdI2 structure at higher temperatures. Close to the transition IT 2H intense diffuse scattering is observed, which can be related to the occurrence of a Kohn anomaly. The 2H modification which results from the IT modification by a shear transformation, exhibits two superstructures as well. Specimens which have been heat treated in the temperature range where the transition IT 2H sets in, exhibit the doubly positioned IT superstructure at room temperature. This is attributed to the presence of the 4Hb polytype. Strukturanderungen, die in der metastabilen IT-Modifikation von TaS2 auftreten, werden mit Elektronenbeugung untersucht und mit Anderungen der elektrischen und magnetischen Eigenschaften verknupft. Es wird gefunden, das die IT-Form bei niedrigen Temperaturen eine Superstruktur der CdJ2-Struktur annimmt und bei hoheren Temperaturen zwei verschiedene verzerrungsmodulierte Strukturen der CdJ2-Struktur. In der Nahe des IT 2H-Ubergangs wird intensive diffuse Streuung beobachtet, die mit dem Auftreten einer Kohn-Anomalie verknupft werden kann. Die 2H-Modifikation, die aus der IT-Modifikation durch eine Schertransformation hervorgerufen wird, zeigt ebenfalls zwei Strukturen. Proben, die im Temperaturbereich getempert werden, wo der IT 2H-Ubergang einsetzt, zeigen die doppelte IT-Superstruktur bei Zimmertemperatur, was der Anwesenheit des 4Hb-Polytyps zugeschrieben wird.
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Van Landuyt J., Van Tendeloo G., Amelincky S. Electron diffraction study of inter‐ and intrapolytypic phase transitions in transition metal dichalcogenides. I. Electron diffraction patterns // phys stat sol (a). 1974. Vol. 26. No. 1. pp. 359-376.
GOST all authors (up to 50) Copy
Van Landuyt J., Van Tendeloo G., Amelincky S. Electron diffraction study of inter‐ and intrapolytypic phase transitions in transition metal dichalcogenides. I. Electron diffraction patterns // phys stat sol (a). 1974. Vol. 26. No. 1. pp. 359-376.
RIS |
Cite this
RIS Copy
TY - JOUR
DO - 10.1002/pssa.2210260138
UR - https://doi.org/10.1002/pssa.2210260138
TI - Electron diffraction study of inter‐ and intrapolytypic phase transitions in transition metal dichalcogenides. I. Electron diffraction patterns
T2 - phys stat sol (a)
AU - Van Landuyt, J.
AU - Van Tendeloo, G.
AU - Amelincky, S
PY - 1974
DA - 1974/11/16
PB - Wiley
SP - 359-376
IS - 1
VL - 26
SN - 0031-8965
SN - 1521-396X
ER -
BibTex |
Cite this
BibTex (up to 50 authors) Copy
@article{1974_Van Landuyt,
author = {J. Van Landuyt and G. Van Tendeloo and S Amelincky},
title = {Electron diffraction study of inter‐ and intrapolytypic phase transitions in transition metal dichalcogenides. I. Electron diffraction patterns},
journal = {phys stat sol (a)},
year = {1974},
volume = {26},
publisher = {Wiley},
month = {nov},
url = {https://doi.org/10.1002/pssa.2210260138},
number = {1},
pages = {359--376},
doi = {10.1002/pssa.2210260138}
}
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Van Landuyt, J., et al. “Electron diffraction study of inter‐ and intrapolytypic phase transitions in transition metal dichalcogenides. I. Electron diffraction patterns.” phys stat sol (a), vol. 26, no. 1, Nov. 1974, pp. 359-376. https://doi.org/10.1002/pssa.2210260138.