Oleksandr Tkach

Investigador Auxiliar

Projectos

Publicações

Structure and Microstructure of Y-doped Strontium Titanate Ceramics

Tkach, A; Vilarinho, PM; Reaney, IM
2008, MICROSCOPY AND MICROANALYSIS, 14, 11-12.

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.

Field Effect on the Dielectric Properties of Sr1-1.5xYxTiO3 Ceramics

A. Tkach, P.M. Vilarinho, A. Almeida
2008, IMAPS/ACerS 4th International Conference and Exhibition on Ceramic Interconnect and Ceramic Microsystems Technologies 2008 (CICMT 2008) Proceedings , 569-577.

Electron spin resonance investigation of Mn2+ ions and their dynamics in Mn-doped SrTiO3

Laguta, VV; Kondakova, IV; Bykov, IP; Glinchuk, MD; Tkach, A; Vilarinho, PM; Jastrabik, L
2007, PHYSICAL REVIEW B, 76, 5.

Nonlinear dc electric-field dependence of the dielectric permittivity and cluster polarization of Sr1-xMnxTiO3 ceramics

Tkach, A; Vilarinho, PM; Kholkin, AL
2007, JOURNAL OF APPLIED PHYSICS, 101, 8.

Mechanisms of the effect of dopants and P(O-2) on the improper ferroelastic phase transition in SrTiO3

Tkach, A; Vilarinho, PM; Kholkin, AL; Reaney, IM; Pokorny, J; Petzelt, J
2007, CHEMISTRY OF MATERIALS, 19, 26, 6471-6477.

Dielectric permittivity and Cr3+ impurity ion probe luminescence in SrTiO3 sol-gel ceramics

Trepakov, VA; Savinov, ME; Okhay, O; Tkach, A; Vilarinho, PM; Kholkin, AL; Gregora, I; Jastrabik, L
2007, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 27, 13-15, 3705-3707.

The influence of dc bias on the dielectric response of Sr1-xCaxTiO3 ceramics

Tkach, A; Araujo, B; Vilarinho, PM
2006, ADVANCED MATERIALS FORUM III, PTS 1 AND 2, 514-516, 240-244.

Dependence of dielectric properties of manganese-doped strontium titanate ceramics on sintering atmosphere

Tkach, A; Vilarinho, PM; Kholkin, AL
2006, ACTA MATERIALIA, 54, 20, 5385-5391.

Broad-band dielectric spectroscopy analysis of relaxational dynamics in Mn-doped SrTiO3 ceramics

Tkach, A; Vilarinho, PM; Kholkin, AL; Pashkin, A; Veljko, S; Petzelt, J
2006, PHYSICAL REVIEW B, 73, 10.

Metal Oxide Based Thermoelectric Materials

In Vijay Kumar, Irfan Ayoub, Vishal Sharma, Hendrik C. Swart (Eds.), Optical Properties of Metal Oxide Nanostructures
Olena Okhay and Alexander Tkach
2023, 399-430, Singapore , Springer Nature Singapore Pte Ltd..
ISBN: 978-981-99-5639-5

Antiferrodistortive phase transition in doped strontium titanate ceramics: the role of the perovskite lattice vacancies

In J. Clabel and V. Rivera (Eds.), Perovskite Ceramics
Alexander Tkach
2022, 77-98, Elsevier.
ISBN: 978-0-323-90586-2

Nonstoichiometry Role on the Properties of Quantum-Paraelectric Ceramics

In Tanasescu, S. (Eds.), Structure Processing Properties Relationships in Stoichiometric and Nonstoichiometric Oxides
Tkach, A; Vilarinho, PM
2020, London, IntechOpen.
ISBN: 978-1-78985-452-7

Strain effect on the properties of polar dielectric thin films

In Alexander Pogrebnjak and Valentin Novosad (Eds.), Advances in Thin Films, Nanostructured Materials, and Coatings
Tkach, A; Okhay, O; Santos, A; Zlotnik, S; Serrazina, R; Vilarinho, PM; Costa, ME
2019, 331-342, Springer Nature Singapore Pte Ltd.
ISBN: 978-981-13-6132-6

Sr/Ti ratio in strontium titanate ceramics: designing the microstructure, envisaging the properties

In Alexander Tkach and Paula Vilarinho (Eds.), Strontium Titanate: Synthesis, Properties and Uses
Amaral, L; Tkach, A; Vilarinho, PM; Senos, AMR
2019, 71-100, New York, Nova Science Publishers, Inc.
ISBN: 978-1-53615-437-5

Effect of bismuth doping on the properties of strontium titanate thin films

In Alexander Tkach and Paula Vilarinho (Eds.), Strontium Titanate: Synthesis, Properties and Uses
Okhay, O; Tkach, A; Vilarinho, PM
2019, 209-258, New York, Nova Science Publishers, Inc.
ISBN: 978-1-53615-437-5

Enhancement of thermoelectric performance in SrTiO3-based ceramics by processing conditions

In Alexander Tkach and Paula Vilarinho (Eds.), Strontium Titanate: Synthesis, Properties and Uses
Tkach, A; Resende, J; Diaz-Chao, P; Guilmeau, E; Costa, ME; Vilarinho, PM
2019, 297-322, New York, Nova Science Publishers, Inc.
ISBN: 978-1-53615-437-5

Functional Tantalum-based Oxides: From the Structure to the Applications

In Ashutosh Tiwari, Rosario A. Gerhardt andMagdalena Szutkowska (Eds.), Advanced Ceramic Materials
S. Zlotnik, A. Tkach, P. M. Vilarinho
2016, 337-283, John Wiley & Sons, Inc.
ISBN: 978-1-119-24244-4

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