Effects of Ce substitution and and reduction on the electronic states ofNd2−xC

Electronic structure of layered titanate Nd2Ti2O7

“…A band is found in the BE range of 2-9 eV with maximum at 3.4 eV. The shape of the band is very similar to that measured earlier in NTO [29], Nd 2 O 3 [32,33], Nd 2 CuO 4 [34,35] and several other neodymium-bearing oxides [36][37][38][39]. As it was shown by detailed observations, the band at 2-9 eV is formed by hybridization of the O 2p and Nd 4f states with the latter component positioned at the top of the valence band [29,32,33,38,39].…”

“…As it was shown by detailed observations, the band at 2-9 eV is formed by hybridization of the O 2p and Nd 4f states with the latter component positioned at the top of the valence band [29,32,33,38,39]. In copper-bearing oxides, this band is dominated by Cu 3d states [34][35][36][37]. A core band at 14-26 eV is formed by superposition of the Nd 5p and O 2s levels.…”

“…However, the set of oxide compounds, for which the values BE(Nd 3d 5/2 ) and BE(O 1s) were determined by means of XPS is very limited. Actually, only the following compounds can be used for comparison: Nd 2 O 3 , D Nd = 452.5 eV[32], Nd 2 CuO 4 , D Nd = 452.9-453.0 eV[34,35], Nd 1.85 Ce 0.15 CuO 4 , D Nd = 452.4-452.8 eV[34][35][36], Li 0.30 Nd 0.57 TiO 3 , D Nd = 452.8 eV[44], NdGaO 3 , D Nd = 451.6 eV-452 34. …”

Surface and interface study on MBE-grownNd1.85Ce0.15CuO4Yamamoto1, Naito2, Sato3 1997Phys. Rev. B464190View full textAdd to dashboardCite

“…Second, accurate information on the surface and interface seems to be needed to build HTSC-based tunnel junctions, the attempts at which have been unsuccessful in spite of tremendous efforts since the discovery of HTSC's. 8 NCCO has been extensively investigated by photoemission spectroscopies 6,7,[9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27] because its surface is relatively stable among cuprates and also because it belongs to a small family of n-type HTSC's. 28,29 A comparison of these with those in the p-type family should shed light on the superconducting mechanism of HTSC's.…”

Nd-substituted SrBi2Ta2O9 ferroelectric thin films prepared by radio frequency magnetron sputtering

“…In SNBT, the Nd3d 5/2 and Nd3d 3/2 peaks (Fig. 2a) before or after etching appear at 982.2 eV and 1004.6 eV while in pure Nd 2 O 3 , the peaks attributed to Nd 3+ appear at around 980.8 eV and 1003.3 eV, respectively [19]. The peak-fitting analysis of the SNBT spectrum suggests that Nd 4+ is not present.…”