2019/11/01 by Anna N. Morozovska, Eugene А. Eliseev, Morozovska, Anna N. +11
Engineering · Materials Science · Physics and Astronomy · #Acoustic Wave Resonator Technologies #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Multiferroics and related materials #Physics of Superconductivity and Magnetism
paper · pdf · doi:10.48550/arxiv.1911.00258
openalex publication_date 2019/11/01 · openalex created_date 2022/07/28 · openalex updated_date 2026/07/28
Ordering of mobile defects in functional materials can give rise to\nfundamentally new phases possessing ferroic and multiferroic functionalities.\nHere we develop the Landau theory for strain induced ordering of defects (e.g.\noxygen vacancies) in thin oxide films, considering both the ordering and\nwavelength of possible instabilities. Using derived analytical expressions for\nthe energies of various defect-ordered states, we calculated and analyzed phase\ndiagrams dependence on the film-substrate mismatch strain, concentration of\ndefects, and Vegard coefficients. Obtained results open possibilities to create\nand control superstructures of ordered defects in thin oxide films by selecting\nthe appropriate substrate and defect concentration.\n