Publicações
Drastic modification of graphene oxide properties by incorporation of nickel: a simple inorganic chemistry approach
Okhay, O; Krishna, R; Tkach, A; Klaui, M; Guerra, LM; Ventura, J; Titus, E; Gracio, JJA
2015, JOURNAL OF MATERIALS SCIENCE, 50, 9, 3425-3433.
Electrical and Magnetic Properties of Graphene Films with Ni Nanoparticles
Okhay, O; Guerra, LM; Ventura, J; Tkach, A; Klaui, M; Krishna, R; Titus, E
2015, MATERIALS TODAY-PROCEEDINGS, 2, 1, 383-388.
Manipulation of dielectric permittivity of sol-gel SrTiO3 films by deposition conditions
Okhay, O; Tkach, A; Wu, A; Vilarinho, PM
2013, JOURNAL OF PHYSICS D-APPLIED PHYSICS, 46, 50.
Magnetic Anomaly and Dielectric Tunability of (Sr,Mn)TiO3 Thin Films
Tkach, A; Okhay, O; Wu, AY; Vilarinho, PM; Bedanta, S; Shvartsman, VV; Borisov, P
2012, FERROELECTRICS, 426, 274-281.
Dielectric relaxation of Sr1-1.5xBixTiO3 sol-gel thin films
Okhay, O; Wu, AY; Vilarinho, PM; Tkach, A
2011, JOURNAL OF APPLIED PHYSICS, 109, 6.
Enhancement of tetragonality and role of strontium vacancies in heterovalent doped SrTiO3
Tkach, A; Almeida, A; Moreira, JA; Correia, TM; Chaves, MR; Okhay, O; Vilarinho, PM; Gregora, I; Petzelt, J
2011, APPLIED PHYSICS LETTERS, 98, 5.
Role of trivalent Sr substituents and Sr vacancies in tetragonal and polar states of SrTiO3
Tkach, A; Correia, TM; Almeida, A; Moreira, JA; Chaves, MR; Okhay, O; Vilarinho, PM; Gregora, I; Petzelt, J
2011, ACTA MATERIALIA, 59, 14, 5388-5397.
Low temperature dielectric characterization of Mg-doped SrTiO3 thin films prepared by sol-gel
Okhay, O; Wu, AY; Vilarinho, PM; Tkach, A
2010, APPLIED PHYSICS LETTERS, 96, 15.
Dielectric response of polycrystalline Sr1-1.5xBixTiO3 thin films under direct current bias
Okhay, O; Wu, AY; Vilarinho, PM; Tkach, A
2010, APPLIED PHYSICS LETTERS, 97, 6.
High dielectric constant and tunability of strontium titanate ceramics modified by chromium doping
Tkach, A; Okhay, O; Vilarinho, PM; Kholkin, AL
2008, JOURNAL OF PHYSICS-CONDENSED MATTER, 20, 41.
