Abstract
The complete set of third-order elastic constants of the high-temperature superconductor is calculated by taking into account the interactions between nine nearest-neighbour atoms in the lattice. Finite deformation theory is used to obtain the strain energy density of a tetragonal 2-1-4-type single crystal of the high-temperature superconductor . This is compared with the strain-dependent lattice energy in continuum model approximation. The second-order derivative of the potential function is obtained from the measured . The third-order derivative is evaluated from the Mie-Grüneisen interatomic potential. The second-order elastic constants of are calculated and compared with the available measured values. The third-order elastic constants of are negative and their absolute magnitudes are one order higher than those of the second-order elastic constants.
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.
