title: Magnetostriction in epitaxial SrTi(1-x)Fe(x)O(3-δ) perovskite films with x = 0.13 and 0.35.
abstract: The crystal structure, magnetic anisotropy and magnetoelasticity of epitaxial SrTi(0.87)Fe(0.13)O(3-δ) (STF13) and SrTi(0.65)Fe(0.35)O(3-δ) (STF35) films grown on (001), (011), and (111) oriented SrTiO(3) 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 × 10(6) and B(2) =- 28 to -26 × 10(6) erg cm(-3) for STF13 and B(1) =- 2.0 × 10(6) and B(2) =- 5.4 to -3.9 × 10(6) erg cm(-3) for STF35 were determined from the magnetic anisotropy and lattice strain, corresponding to magnetostriction constants of λ(100) = 2.09 × 10(-6) and λ(111) = 7.68 × 10(-6) for STF13, and λ(100) = 0.62 × 10(-6) and λ(111) = 1.07 × 10(-6) for STF35.
authors.affiliation: Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, USA.
authors.forename: Dong Hun
authors.initials: DH
authors.lastname: Kim
authors.forename: Nicolas M
authors.initials: NM
authors.lastname: Aimon
authors.forename: Lei
authors.initials: L
authors.lastname: Bi
authors.forename: J M
authors.initials: JM
authors.lastname: Florez
authors.forename: Gerald F
authors.initials: GF
authors.lastname: Dionne
authors.forename: C A
authors.initials: CA
authors.lastname: Ross
mesh_terms: D017610:Calcium Compounds / Q000737:chemistry*; D003198:Computer Simulation; D055119:Elastic Modulus; D060526:Magnetic Fields; D008567:Membranes, Artificial; D008670:Metals / Q000737:chemistry*; D008956:Models, Chemical; D008958:Models, Molecular; D010087:Oxides / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*
chemical_list: D017610:Calcium Compounds; D008567:Membranes, Artificial; D008670:Metals; D010087:Oxides; C059910:perovskite; D014025:Titanium