Structure evolution for annealing Co ultrathin films on Pt(111)

Structure Related Magnetic Dead Layer for Ultrathin Fe/Ir(111) Films

“…For heteroepitaxy, the surface energy and the lattice constant of the growing film, which are different from substrate values, may influence the growth mode [22], [23]. The strain introduced by the lattice mismatch may be released after a few MLs of deposition and this thickness is dependent on the system [1], [23], [24].…”

“…The strain introduced by the lattice mismatch may be released after a few MLs of deposition and this thickness is dependent on the system [1], [23], [24]. An fcc-to-bcc structural transformation for Fe films on Cu Au , accompanied by a distinct change in the surface topography, starts at about 3.5 ML for the growth temperatures of 300 K [24].…”

“…An fcc-to-bcc structural transformation for Fe films on Cu Au , accompanied by a distinct change in the surface topography, starts at about 3.5 ML for the growth temperatures of 300 K [24]. For Co/Pt(111), pseudostructure transforms to be incoherent epitaxy at 1.2 ML [23]. For Fe/Ir(111), the fcc-to-bcc structural transformation occurs around 3 ML.…”

In situ scanning tunneling microscopy study of cobalt thin film electrodeposited on Pt(111) electrode

“…Given this critical role of interface, electron diffraction and scanning probe techniques are used to study interfacial structure in vacuum, as exemplified by a number of studies on cobalt deposition on Pt(1 1 1) [8,[14][15][16][17]. STM results show that Co deposition proceeds in layer-by-layer with Co atoms arranging in a hexagonal array for the first five layers, but the thin film becomes rougher upon continuous deposition.…”

Alloy formation of Co/Ni/Pt(111)

“…Due to the sensitivity of Auger electrons, we did not observe any significant changes for the Co 656 eV and Ni 848 eV Auger signals between 420 K and 580 K. As the temperature exceeds 650 K, the drops of Ni 848 eV and Co 656 eV signals indicate that the bulk diffusions for Co and Ni occur because of high-energy Auger electrons come from the deep layers. According to recent studies about the alloy formation of Co-Pt [12] and Ni-Pt [9] interfaces, these drops can be confirmed as the alloy formation of Co-Pt and Ni-Pt. The formation of Ni-Co-Pt alloy is also possible in the subsurface region.…”