Oleksandr Tkach
  Investigador Auxiliar  
   
  telefone: 234370235  
  extensão: 22911  
  e-mail: atkach@ua.pt  
  departamento: Engenharia de Materiais e Cerâmica  
  gabinete: 9.2.18  
   
  grupo: 2 - nanoestruturas e cerâmicos ferróicos multifuncionais
 
  linha: 1 - tecnologias da informação e comunicação
 		 
  url directo: https://www.ciceco.ua.pt/oleksandrtkach  
   
Últimas Notícias


Projectos
Group2 Icon Additive Manufacturing for Smart Plastics (AM4SP)
Group5 Icon Group2 Icon Group0 Icon BioMEMs Avançados para Engenharia de Tecidos: Aplicações em Tecidos Duros (BioMEMs)
Group2 Icon Materiais flexíveis piezoelétricos de alto desempenho preparados utilizando grafite porosa organizada para sensores e geração de energia (PIEZOFLEX)
Group3 Icon Group2 Icon Multiferroicos e magnetoeléctricos para spintrónica: barreiras e interfaces (PTDC/CTM/099415/2008)
Group2 Icon Multifunctional all-oxide heterostructures for electronic applications (IF/00602/2013/CP1162/CT0015)


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.
CICECO Authorship
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,
CICECO Authorship
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.
CICECO Authorship
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.
CICECO Authorship
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.
CICECO Authorship
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,
CICECO Authorship
(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,
CICECO Authorship
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.
CICECO Authorship
(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,
CICECO Authorship
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.
CICECO Authorship
Structure and Microstructure of Y-doped Strontium Titanate Ceramics
Tkach, A; Vilarinho, PM; Reaney, IM
2008, MICROSCOPY AND MICROANALYSIS, 14, 11-12.
CICECO Authorship
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,
CICECO Authorship
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.
CICECO Authorship
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,
CICECO Authorship
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,
CICECO Authorship
Nonstoichiometry Role on the Properties of Quantum-Paraelectric Ceramics
Tkach, A; Vilarinho, PM
In Tanasescu, S. (Eds.), Structure Processing Properties Relationships in Stoichiometric and Nonstoichiometric Oxides
2020, London: IntechOpen.
CICECO Authorship
Strain effect on the properties of polar dielectric thin films
Tkach, A; Okhay, O; Santos, A; Zlotnik, S; Serrazina, R; Vilarinho, PM; Costa, ME
In Alexander Pogrebnjak and Valentin Novosad (Eds.), Advances in Thin Films, Nanostructured Materials, and Coatings
2019, 331-342. Springer Nature Singapore Pte Ltd.
CICECO Authorship
Sr/Ti ratio in strontium titanate ceramics: designing the microstructure, envisaging the properties
Amaral, L; Tkach, A; Vilarinho, PM; Senos, AMR
In Alexander Tkach and Paula Vilarinho (Eds.), Strontium Titanate: Synthesis, Properties and Uses
2019, 71-100. New York: Nova Science Publishers, Inc.
CICECO Authorship
Effect of bismuth doping on the properties of strontium titanate thin films
Okhay, O; Tkach, A; Vilarinho, PM
In Alexander Tkach and Paula Vilarinho (Eds.), Strontium Titanate: Synthesis, Properties and Uses
2019, 209-258. New York: Nova Science Publishers, Inc.
CICECO Authorship
Enhancement of thermoelectric performance in SrTiO3-based ceramics by processing conditions
Tkach, A; Resende, J; Diaz-Chao, P; Guilmeau, E; Costa, ME; Vilarinho, PM
In Alexander Tkach and Paula Vilarinho (Eds.), Strontium Titanate: Synthesis, Properties and Uses
2019, 297-322. New York: Nova Science Publishers, Inc.
CICECO Authorship
Functional Tantalum-based Oxides: From the Structure to the Applications
S. Zlotnik, A. Tkach, P. M. Vilarinho
In Ashutosh Tiwari, Rosario A. Gerhardt andMagdalena Szutkowska (Eds.), Advanced Ceramic Materials
2016, 337-283. John Wiley & Sons, Inc.
CICECO Authorship

 
Apoio

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