Abstract
Based on a generalized Ising model in which first-, second- and third-neighbor interaction are considered and a combinative cluster variation method of a five- and a four-body square cluster is utilized, the structural transitions are discussed and a phase diagram is obtained. The calculation results show that the third-neighbor interactiom contributes to the existence of the double cell structure at relative high temperature, and are in good agreement with recent experimental observations.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.