Magnetostriction in epitaxial SrTi1-xFexO3-delta perovskite films with x=0.13 and 0.35

作者：Kim Dong Hun^*; Aimon Nicolas M; Bi Lei; Florez J M; Dionne Gerald F; Ross C A

来源：Journal of Physics: Condensed Matter , 2013, 25(2): 026002.

DOI：10.1088/0953-8984/25/2/026002

• In-plane strains
• Lattice strain
• Magneto-elastic
• Magneto-elasticity
• Magnetocrystalline
• Magnetoelastic anisotropy
• Magnetostriction constants
• Out-of-plane anisotropy
• Perovskite films
• Rhombohedral distortion
• Room temperature
• Shape anisotropy
• SrTiO3 substrates

The crystal structure, magnetic anisotropy and magnetoelasticity of epitaxial SrTi0.87Fe0.13O3-delta (STF13) and SrTi0.65Fe0.35O3-delta (STF35) films grown on (001), (011), and (111) oriented SrTiO3 substrates were investigated. The films grew with compressive in-plane strain and underwent tetragonal, monoclinic, and rhombohedral distortions on the (001), (011), and (111) substrates, respectively. All samples showed room temperature magnetic hysteresis loops with strong out-of-plane anisotropy. The resulting magnetoelastic anisotropy was an order of magnitude greater than the magnetocrystalline and shape anisotropies. Magnetoelastic coefficients of B-1 = -6.7 x 10(6) and B-2 = -28 to 26 x 10(6) erg cm(-3) for STF13 and B-1 = -2.0 x 10(6) and B-2 = -5.4 to -3.9 x 10(6) erg cm(-3) for STF35 were determined from the magnetic anisotropy and lattice strain, corresponding to magnetostriction constants of lambda 100 = 2.09 x 10(-6) and lambda 111 = 7.68 x 10(-6) for STF13, and lambda 100 = 0.62 x 10(-6) and lambda 111 = 1.07x 10(-6) for STF35.

• 出版日期2013-1-16
• 单位MIT