Al-doped ZnO: Electronic, electrical and structural properties

F Maldonado, A Stashans - Journal of Physics and Chemistry of Solids, 2010 - Elsevier
Changes in structural, electrical and electronic properties of zinc oxide (ZnO) due to Al
doping are studied using a quantum-chemical approach based on the Hartree–Fock theory …

Conduction states in oxide perovskites:  Three manifestations of Jahn-Teller polarons in barium titanate

S Lenjer, OF Schirmer, H Hesse, TW Kool - Physical Review B, 2002 - APS
A comprehensive study of conduction polarons in purified BaTiO 3 crystals, containing about
100-ppm Nb as extrinsic ions, is presented. Nb 5+ is compensated by Ti 3+(3 d 1) ions …

Synergistic behaviors of tribocorrosion and electrochemical performance of in situ laser deposited CaTixOy–Ti coatings by DFT calculation

K Weicheng, L Detao, K Dejun - Tribology International, 2023 - Elsevier
CaTi x O y–Ti coatings were in–situ grew on Ti6Al4V alloy by laser direct energy deposition.
The synergistic behaviors of tribocorrosion and electrochemical performance of CaTi x O y …

Nb-doped CaTiO3 transparent semiconductor thin films

RP Wang, CJ Tao - Journal of crystal growth, 2002 - Elsevier
Optically transparent Nd-doped CaTiO3 thin films with a transmittance higher than 60% in
the visible region have been epitaxially grown on LaAlO3 (001) substrates by pulsed laser …

Defects in titanates

A Stashans - International journal of nanotechnology, 2004 - inderscienceonline.com
Electronic, structural and optical properties of titanates (BaTiO3, SrTiO3, CaTiO3 and
PbTiO3) containing different point defects are reviewed and discussed in the present work …

Systematic study of ferroelectric, interfacial, oxidative, and doping effects on conductance of Pt/BaTiO/Pt ferroelectic tunnel junctions

L Shen, T Zhou, Z Bai, M Zeng, JQ Goh, Z Yuan… - Physical Review B …, 2012 - APS
Using the nonequilibrium Green's function method combined with density functional theory,
we systematically study the ferroelectric, interfacial, oxidative, and doping effects on electron …

Effect of interstitial hydrogen on structural and electronic properties of BaTiO3

A Stashans, J Chimborazo - Philosophical Magazine B, 2002 - Taylor & Francis
We investigate the geometry and electronic structure of an interstitial H atom in the BaTiO3
crystal considering both cubic and tetragonal crystallographic lattices. A quantum-chemical …

A quantum mechanical study of La-doped Pb (Zr, Ti) O3

A Stashans, F Maldonado - Physica B: Condensed Matter, 2007 - Elsevier
Lanthanum-modified Pb (Zr, Ti) O3 (PZT) crystals have been investigated applying a
quantum-mechanical approach based on the Hartree–Fock theory. A morphotropic phase …

Oxygen-vacancy defects on BaTiO3 (001) surface: a quantum chemical study

C Duque, A Stashans - Physica B: Condensed Matter, 2003 - Elsevier
A quantum-chemical study of technologically important BaTiO3 crystal and oxygen-vacancy
defects on its (001) surface is reported in the present work. The computations are made …

Superconductivity and Jahn-Teller polarons in titanates

A Stashans, H Pinto, P Sánchez - Journal of low temperature physics, 2003 - Springer
The present work focuses on the superconductivity phenomenon in La-doped SrTiO 3
crystal, and the Jahn-Teller (JT) polarons in BaTiO 3 crystal. In the case of SrTiO 3 crystal …