Electronic Structure of (Pb,La)(Zr,Ti)O₃ Thin Film Probed by Soft-X-Ray Spectroscopy

Abstract

The electronic structure of (Pb,La)(Zr,Ti)O3 (PLZT) thin film was studied by X-ray absorption spectroscopy and soft-X-ray emission spectroscopy (SXES). The Ti 3d and O 2p partial densities of states in the valence band region were observed in O 1s and Ti 2p SXES spectra. The energy position of the Ti 3d state overlapped with that of the O 2p state, indicating the occurrence of the hybridization effect between the Ti 3d and O 2p states. The hybridization effect of PLZT thin film is lower than that of Pb(Zr,Ti)O3 thin film. This finding indicates that the hybridization effect is closely related to the change in the bond length between Ti and O ions.

Electronic structure of Pb1−xBaxZr0.65Ti0.35O3ferroelectric compounds probed by soft x-ray absorption spectroscopy

“…However, as presented in figure 4, a symmetric peak is observed for all compositions, and feature F, which is related to the e g states, does not shown a clear peak splitting even in the x = 0.0 sample where the Ti first coordination shell is formed by three long and three short Ti-O bonds [1]. A similar behaviour has been observed when La atoms substitute Pb atoms in Pb 1−x La x Zr 0.65 Ti 0.35 (PLZT) thin films and Ba atoms are substituted by Sr atoms in the Ba 1−x Sr x TiO 3 (BST) ceramic system [8,15]. In that case of the BST system, the absence of e g splitting was attributed to an insignificant tetragonal distortion or a lower c/a ratio [8].…”

Investigation of the amorphous to crystalline phase transition of chemical solution deposited Pb(Zr0.3Ti0.7)O3 thin films by soft X-ray absorption and soft X-ray emission spectroscopy

“…4) because the local titanium environment is dominated by the oxygen octahedra rather than by the carbon. augmented plane wave method (in the local density approximation (LDA)) as well as the experimental work from Higuchi et al [63], the peaks labelled by α (531 eV), β (532 eV) (see On the other hand it was figured out by many researchers [18][19][20][21][22][23] that a certain amount of carbon during pyrolysis is important to generate reducing conditions nearby the platinum/PZT interface which leads to the reduction of Pb 2+ to Pb 0 . The latter forms the (111) textured growth promoting Pt x Pb intermetallic phase.…”

Investigating the electronic properties of novel titanium oxonitridophosphate, Ti5P12N24O2, through structural distortions at the titanium sites

“…RIXS is particularly valuable for investigating the distortion leading to lifting the degeneracy of the 3d orbitals in transition metal. [14][15][16][17][18][19][20] Using this methodology, we successfully ascertain the specific crystallographic symmetry of the titanium sites. Consequently, we also quantify the degree of lattice distortion present.…”

“…RIXS is particularly valuable for investigating the distortion leading to lifting the degeneracy of the 3d orbitals in transition metal. 14–20…”