The correlation between mechanical stress and magnetic anisotropy in ultrathin films Export

@article{citeulike:2073764, abstract = {The impact of stress-driven structural transitions and of film strain on the magnetic properties of nm ferromagnetic films is discussed. The stress-induced bending of film-substrate composites is analysed to derive information on film stress due to lattice mismatch or due to surface-stress effects. The magneto-elastic coupling in epitaxial films is determined directly from the magnetostrictive bending of the substrate. The combination of stress measurements with magnetic investigations by the magneto-optical Kerr effect (MOKE) reveals the modification of the magnetic anisotropy by film stress. Stress-strain relations are derived for various epitaxial orientations to facilitate the analysis of the substrate curvature. Biaxial film stress and magneto-elastic coupling coefficients are measured in epitaxial Fe films in situ on W single-crystal substrates. Tremendous film stress of more than 10 GPa is measured in pseudomorphic Fe layers, and the important role of film stress as a driving force for the formation of misfit distortions and for inducing changes of the growth mode in monolayer thin films is presented. The direct measurement of the magneto-elastic coupling in epitaxial films proves that the magnitude and sign of the magneto-elastic coupling deviate from the respective bulk value. Even a small film strain of order 0.1\% is found to induce a significant change of the effective magneto-elastic coupling coefficient. This peculiar behaviour is ascribed to a second-order strain dependence of the magneto-elastic energy density, in contrast to the linear strain dependence that is valid for bulk samples.}, author = {Sander, D.}, citeulike-article-id = {2073764}, citeulike-linkout-0 = {http://dx.doi.org/10.1088/0034-4885/62/5/204}, citeulike-linkout-1 = {http://stacks.iop.org/0034-4885/62/i=5/a=204}, doi = {10.1088/0034-4885/62/5/204}, journal = {Reports on Progress in Physics}, keywords = {film, stress, thin}, number = {5}, pages = {809--858}, posted-at = {2007-12-07 16:07:18}, priority = {5}, title = {The correlation between mechanical stress and magnetic anisotropy in ultrathin films}, url = {http://dx.doi.org/10.1088/0034-4885/62/5/204}, volume = {62}, year = {1999} }

TY - JOUR ID - citeulike:2073764 L3 - citeulike-article-id:2073764 N2 - The impact of stress-driven structural transitions and of film strain on the magnetic properties of nm ferromagnetic films is discussed. The stress-induced bending of film-substrate composites is analysed to derive information on film stress due to lattice mismatch or due to surface-stress effects. The magneto-elastic coupling in epitaxial films is determined directly from the magnetostrictive bending of the substrate. The combination of stress measurements with magnetic investigations by the magneto-optical Kerr effect (MOKE) reveals the modification of the magnetic anisotropy by film stress. Stress-strain relations are derived for various epitaxial orientations to facilitate the analysis of the substrate curvature. Biaxial film stress and magneto-elastic coupling coefficients are measured in epitaxial Fe films in situ on W single-crystal substrates. Tremendous film stress of more than 10 GPa is measured in pseudomorphic Fe layers, and the important role of film stress as a driving force for the formation of misfit distortions and for inducing changes of the growth mode in monolayer thin films is presented. The direct measurement of the magneto-elastic coupling in epitaxial films proves that the magnitude and sign of the magneto-elastic coupling deviate from the respective bulk value. Even a small film strain of order 0.1% is found to induce a significant change of the effective magneto-elastic coupling coefficient. This peculiar behaviour is ascribed to a second-order strain dependence of the magneto-elastic energy density, in contrast to the linear strain dependence that is valid for bulk samples. IS - 5 JF - Reports on Progress in Physics EP - 858 TI - The correlation between mechanical stress and magnetic anisotropy in ultrathin films VL - 62 SP - 809 KW - film KW - stress KW - thin AU - Sander, D PY - 1999/// UR - http://dx.doi.org/10.1088/0034-4885/62/5/204 ER -