Oleksandr Tkach

Investigador Auxiliar

Projectos

Publicações

Dielectric Relaxation, Local Structure and Lattice Dynamics in Mn-Doped Potassium Tantalate Ceramics

Tkach, A; Almeida, A; Levin, I; Woicik, JC; Vilarinho, PM
2021, MATERIALS, 14, 16.
ISBN: 1996-1944

Electrostatic Charges of Abrasive Powders: The Role of Particle Size and Humidity

Tkach, A; Garcez, M; Vilarinho, PM
2021, COATINGS, 11, 12.
ISBN: 2079-6412

Dielectric Response of KTaO3 Single Crystals Weakly Co-Doped with Li and Mn

Tkach, A; Zlotnik, S; Vilarinho, PM
2021, CRYSTALS, 11, 10.
ISBN: 2073-4352

Comment on Hole-pinned defect-dipoles induced colossal permittivity in Bi doped SrTiO3 ceramics with Sr deficiency

Tkach, A; Okhay, O
2021, JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY, 65, 151-153.

Comment on Point defect structure of La-doped SrTiO3 ceramics with colossal permittivity

Tkach, A; Okhay, O
2021, SCRIPTA MATERIALIA, 190, 38-39.
ISBN: 1872-8456

Polar Phonon Behaviour in Polycrystalline Bi-Doped Strontium Titanate Thin Films

Tkach, A; Okhay, O; Nuzhnyy, D; Petzelt, J; Vilarinho, PM
2021, MATERIALS, 14, 21.
ISBN: 1996-1944

Barium Strontium Titanate Thick Films for Tunable Software-Defined Radio Front-Ends

Patrícia Bouça, Ricardo Figueiredo, Anna Włódarkiewicz, Alexander Tkach, João Nuno Matos, Paula M. Vilarinho, Nuno Borges de Carvalho
2021, IEEE MTT-S International Microwave Symposium.

Comment on Giant dielectric response in (Nb plus Zn) co-doped strontium titanate ceramics tailored by atmosphere

Tkach, A; Okhay, O
2020, SCRIPTA MATERIALIA, 185, 19-20.

Long term durability of solid-state supercapacitor based on reduced graphene oxide aerogel and carbon nanotubes composite electrodes

Okhay, O; Tkach, A; Staiti, P; Lufrano, F
2020, ELECTROCHIMICA ACTA, 353.
ISBN: 1873-3859

Spark plasma texturing: A strategy to enhance the electro-mechanical properties of lead-free potassium sodium niobate ceramics

Pinho, R; Tkach, A; Zlotnik, S; Costa, ME; Noudem, J; Reaney, IM; Vilarinho, PM
2020, APPLIED MATERIALS TODAY, 19.

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

Metal Oxide Based Thermoelectric Materials

In Kumar, V., Ayoub, I., Sharma, V., Swart, H.C. (Eds.), Optical Properties of Metal Oxide Nanostructures
Okhay O.; Tkach A.
2023, Progress in Optical Science and Photonics, 26, 399-430, Springer.
ISBN: 978-981-99-5640-1

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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