Oleksandr Tkach

Investigador Auxiliar

Projectos

Publicações

Lattice dynamics in Ba0.7Sr0.3TiO3: study by THz and IR spectroscopy and ab initio simulations

Ostapchuk, T; Petzelt, J; Kuzel, P; Savinov, M; Hlinka, J; Tkach, A; Vilarinho, PM; Lisenkov, S; Ponomareva, I; Bellaiche, L
2010, PHASE TRANSITIONS, 83, 10-11, 955-965.

Spin cluster glass and magnetoelectricity in Mn-doped KTaO3.

Shvartsman, VV; Bedanta, S; Borisov, P; Kleemann, W; Tkach, A; Vilarinho, PM
2010, JOURNAL OF APPLIED PHYSICS, 107, 10.

Sr- and Ti-site substitution, lattice dynamics, and octahedral tilt transition relationship in SrTiO3:Mn ceramics

Tkach, A; Vilarinho, PM; Nuzhnyy, D; Petzelt, J
2010, ACTA MATERIALIA, 58, 2, 577-582.

Multiglass order and magnetoelectricity in Mn2+ doped incipient ferroelectrics

Kleemann, W; Bedanta, S; Borisov, P; Shvartsman, VV; Miga, S; Dec, J; Tkach, A; Vilarinho, PM
2009, EUROPEAN PHYSICAL JOURNAL B, 71, 3, 407-410.

Magnetoelectricity in multiferroically composed multilayers and multiglasses

Kleemann, W; Borisov, P; Shvartsman, VV; Bedanta, S; Tkach, A; Vilarinho, PM
2009, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 321, 11, 1785-1789.

Broad-band dielectric spectroscopy and ferroelectric soft-mode response in the Ba0.6Sr0.4TiO3 solid solution

Ostapchuk, T; Petzelt, J; Hlinka, J; Bovtun, V; Kuzel, P; Ponomareva, I; Lisenkov, S; Bellaiche, L; Tkach, A; Vilarinho, P
2009, JOURNAL OF PHYSICS-CONDENSED MATTER, 21, 47.

(Sr, Mn) TiO3-a magnetoelectrically coupled multiglass

Kleemann, W; Shvartsman, VV; Bedanta, S; Borisov, P; Tkach, A; Vilarinho, PM
2008, JOURNAL OF PHYSICS-CONDENSED MATTER, 20, 43.

Infrared and THz Soft-Mode Spectroscopy of (Ba,Sr)TiO3 Ceramics

Ostapchuk, T; Petzelt, J; Kuzel, P; Veljko, S; Tkach, A; Vilarinho, P; Ponomareva, I; Bellaiche, L; Smirnova, E; Lemanov, V; Sotnikov, A; Weihnacht, M
2008, FERROELECTRICS, 367, 139-148.

(Sr, Mn)TiO(3): A Magnetoelectric Multiglass

Shvartsman, VV; Bedanta, S; Borisov, P; Kleemann, W; Tkach, A; Vilarinho, PM
2008, PHYSICAL REVIEW LETTERS, 101, 16.

Scandium doped Strontium Titanate Ceramics: Structure, Microstructure, and Dielectric Properties

Tkach, A; Vilarinho, PM
2008, BOLETIN DE LA SOCIEDAD ESPANOLA DE CERAMICA Y VIDRIO, 47, 4, 238-241.

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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