Thermodynamic conditions during growth determine the magnetic anisotropy in epitaxial thin-films of La$_{0.7}$Sr$_{0.3}$MnO$_{3}$

摘要: The suitability of a particular material for use in magnetic devices is determined by the process magnetization reversal/relaxation, which turn depends on anisotropy. Therefore, designing new ways to control anisotropy technologically important materials highly desirable. Here we show that epitaxial thin-films half-metallic ferromagnet La$_{0.7}$Sr$_{0.3}$MnO$_{3}$ (LSMO) proximity thermodynamic equilibrium conditions during growth. We performed series X-ray diffraction and ferromagnetic resonance (FMR) experiments two different sets samples: first corresponds LSMO deposited under tensile strain (001) SrTiO$_{3}$ Pulsed Laser Deposition (PLD; far from equilibrium); second were slow Chemical Solution (CSD) method, quasi-equilibrium conditions. Thin films prepared PLD in-plane cubic with an overimposed uniaxial term. A large constant perpendicular film plane was also observed these films. However, completely suppressed CSD out reduced, resulting much stronger chemically synthesized This change due rotation pattern MnO$_{6}$ octahedra accomodate strain, not only amount stress imposed STO substrate, but growth Our results demonstrate nature magnitude can be tuned parameters thin-film deposition.