Abstract
Using the Extended X-ray Absorption Fine Structure (EXAFS) technique, we have investigated the local structure of disordered PbSxTe1−x and ZnxCd1−xTe alloys at temperatures below and above the reported ferroelectric transition temperatures. For the PbSxTe1−x alloys (x=0.10, 0.18, and 0.30), the sulphur ions are found to be off-center in both the high and the low temperature phase and Pb sublattice and Te sublattice shift relative to one another below the transition temperature. For ZnxCd1−xTe alloys (x=0.10 and 0.20), the zinc ions are found in a slightly asymmetric site in the cages formed by four NN Te ions and no relative shift between the cation and anion sublattice is observed. We discuss our results concerning the ferroelectric phase transitions (FPT) induced by off-center ions in these two systems.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
