Abstract
Tuning the magnetic hysteresis and optical absorption in single crystal epitaxial magnetic garnet films is investigated. It is demonstrated that high values of coercivity and optical absorption are caused by lattice mismatch stress and/or oxygen vacancies which compensate calcium anions in Ca-containing garnet films. Several methods for enhancing coercivity in Bi-containing films are studied: by doping bivalent impurity anions, by mismatch stress and by treatment in negative corona discharge. Optimization and comparative analysis of these methods are carried out discussing their pros and cons.
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