Correlation of magnetism and structure for ultra thin Au/Co/Au films: Evidence for magnetoelastic effects

Film and Interface Atomic Structures of Electrodeposited Co/Au(111) Layers: An in Situ X-ray Scattering Study as a Function of the Surface Chemistry and the Electrochemical Potential

“…The distance d Co1–Co2 = 2.01 ± 0.04 Ǻ indicates that the film is ∼1% compressed perpendicularly to the film surface (the bulk distance CoCo is 2.03 Ǻ), which is consistent with the fact that 2 ML Co islands are expanded in the surface plane relative to the bulk CoCo spacing by 2.6% (see Section ). Indeed, in the case of an elastic deformation the relation between the in-plane strain ε 1 and the strain perpendicular to the surface ε 3 is ε 3 = −0.57ε 1 in the case of Co . Using this relationship, we obtain ε 1 ∼ 2%, a value close to the one measured in Section .…”

“…Parameters of the Best Fits Shown by the Solid Lines in Figure 8 Co is 2.03 Å ́), which is consistent with the fact that 2 ML Co islands are expanded in the surface plane relative to the bulk CoCo spacing by 2.6% (see Section 3.3). Indeed, in the case of an elastic deformation the relation between the in-plane strain ε 1 and the strain perpendicular to the surface ε 3 is ε 3 = −0.57ε 1 in the case of Co. 28 Using this relationship, we obtain ε 1 ∼ 2%, a value close to the one measured in Section 3.3. In general, the results are in good agreement with those shown in Section 3.5, although it appears that a more ideal 2 ML thick Co film was achieved in the thin layer cell.…”

Bonding Analysis of [Au (3.16 nm)/Co (1.5 nm)]x35/Si (100) Multilayer Thin Film

“…Such nanostructures are of great interest in research owing to their fundamental research as well as application aspects. Some novel properties like perpendicular magnetic anisotropy (PMA) [1], giant magneto resistance (GMR) [2,3], spin reorientation transition [4], spin torque transfer effect (STT) [5] etc. are found to be useful in wide range of device applications designed for low power consumption such as in magnetic recording media like read and write heads [2], magnetic ratchet memories [6,7], sensors [8,9] and magneto-plasmonic properties in biomedical field [10][11][12].…”

Magnetic transition in ultrathin Co sandwiched between Au layers in [Au (3.16 nm)/Co (1.5 nm)]x35/Si(100) multilayers

“…With the advancement in nanotechnology, newer magnetic or optomagnetic materials are being developed utilizing the well‐known magnetic properties of existing materials such as magnetic domain size and structural properties like lattice parameters 1,2 . In this regard, several theoretical and experimental studies have been done on the nanoflakes, core‐shell nanostructures, single layer, bilayer, granular, or multilayer structures (MLS) prepared by combining layers/substrate of Au and magnetic materials such as Co, Ni, or Fe to exhibit interesting magnetic properties including high magnetization and plasmonic resonance, 3–7 which is of great interest both from fundamental and application viewpoints. For example, the combination of Co and Au in the form of bilayers, multilayers, core‐shell nanoparticles, or bimetallic magnetic nanoparticles has also been utilized in preparing nanoparticles for medical applications on the basis of their magneto‐plasmonic properties, which are useful in preparing sensors 8–12 .…”