OK-edge x-ray absorption study of ultrathinNiOepilayers depositedin situonAg(001)

Magnetic linear dichroism studies of in situ grown NiO thin films

“…XAS sees the average lattice parameter within the probing volume, while LEED is most sensitive to the topmost layer. It is interesting to note that the thickness range where MLD saturates ðt c Þ is close to the 50ML film with near-bulk lattice parameters [3], confirming that the decrease of MLD with increase of thickness is indeed a strain induced effect.…”

“…It is found from LEED studies of NiO(0 0 1) thin films on Ag(0 0 1) [7] that the surface in-plane lattice parameter is fully relaxed at a thickness of 20ML. Another study using Oxygen K-edge XAS [3], it was shown that the experimental lattice parameters were close to that of bulk single crystal, by about 50ML thickness of NiO(0 0 1). This difference in the critical thickness between the two techniques can be understood as the sample probing depth of XAS is quite different compared to LEED.…”

“…The appealing electronic properties of NiO such as large bandgap ð$4 eVÞ, high-magnetic ordering temperature ðT N ¼ 520 KÞ and high-thermal stability make it a favorable material also for device applications. There have been several studies on the growth and structural characterization of the thin oxide films [3][4][5][6][7][8][9][10][11][12][13], but many aspects of the magnetic properties are still unclear. It is essential to understand the antiferromagnetic (AF) spin structure and domain behaviors of these films if we have to manipulate them in a controlled way to be useful for applications.…”

Synchrotron ultrafast techniques for photoactive transition metal complexes

“…This makes XANES a very powerful instrument for direct structural characterization in a wide range of systems, including semiconductors [83,103], superconductors [104], oxides [105][106][107][108][109], catalysts [82,102,[110][111][112][113][114][115][116][117], solutions [118], surfaces and interfaces [119][120][121], and biological [122][123][124][125][126], geological [127][128][129][130] and hybrid organic-inorganic materials [113,[131][132][133]. The relation between geometrical features and XANES response mainly depends on the multiple-scattering processes (figure 5c) of the excited photoelectron after the ionization threshold, which dominate with respect to the single-scattering events due to the lowered photoelectron energy.…”

Silver nanostructures on a c(4×2)-NiOx/Pd(100) monolayer

“…the growth of NiO on Ag(1 0 0), has been thoroughly studied and the NiO/Ag(1 0 0) interface has assumed the status of a reference system for a well-matched ultrathin film [26][27][28][29][30][31][32].…”