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Alexander Tkach
Alexander Tkach
CICECO - Aveiro Institute of Materials, University of Aveiro, Portugal
Email confirmado em ua.pt - Página inicial
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(Sr, Mn) TiO 3: A Magnetoelectric Multiglass
VV Shvartsman, S Bedanta, P Borisov, W Kleemann, A Tkach, ...
Physical Review Letters 101 (16), 165704, 2008
1812008
Accessing the fundamentals of magnetotransport in metals with terahertz probes
Z Jin, A Tkach, F Casper, V Spetter, H Grimm, A Thomas, T Kampfrath, ...
Nature Physics 11 (9), 761-766, 2015
1402015
Structure–microstructure–dielectric tunability relationship in Mn-doped strontium titanate ceramics
A Tkach, PM Vilarinho, AL Kholkin
Acta Materialia 53 (19), 5061-5069, 2005
1282005
Magnetic anisotropy engineering in thin film Ni nanostructures by magnetoelastic coupling
S Finizio, M Foerster, M Buzzi, B Krüger, M Jourdan, CAF Vaz, J Hockel, ...
Physical Review Applied 1 (2), 021001, 2014
1162014
Broad-band dielectric spectroscopy analysis of relaxational dynamics in Mn-doped SrTiO 3 ceramics
A Tkach, PM Vilarinho, AL Kholkin, A Pashkin, S Veljko, J Petzelt
Physical Review B 73 (10), 104113, 2006
1092006
Polar behavior in Mn-doped SrTiO3 ceramics
A Tkach, PM Vilarinho, AL Kholkin
Applied Physics Letters 86 (17), 172902, 2005
1082005
Defects and charge transport in Mn-doped K 0.5 Na 0.5 NbO 3 ceramics
MA Rafiq, A Tkach, ME Costa, PM Vilarinho
Physical Chemistry Chemical Physics 17 (37), 24403-24411, 2015
952015
Dependence of dielectric properties of manganese-doped strontium titanate ceramics on sintering atmosphere
A Tkach, PM Vilarinho, AL Kholkin
Acta Materialia 54 (20), 5385-5391, 2006
912006
Giant dielectric permittivity and high tunability in Y-doped SrTiO3 ceramics tailored by sintering atmosphere
A Tkach, O Okhay, A Almeida, PM Vilarinho
Acta Materialia 130, 249-260, 2017
792017
Electron spin resonance investigation of Mn 2+ ions and their dynamics in Mn-doped Sr Ti O 3
VV Laguta, IV Kondakova, IP Bykov, MD Glinchuk, A Tkach, PM Vilarinho, ...
Physical Review B 76 (5), 054104, 2007
772007
Thermoelectric performance of Nb-doped SrTiO3 enhanced by reduced graphene oxide and Sr deficiency cooperation
O Okhay, S Zlotnik, W Xie, K Orlinski, MJH Gallo, G Otero-Irurueta, ...
Carbon 143, 215-222, 2019
762019
Graphene/reduced graphene oxide-carbon nanotubes composite electrodes: From capacitive to battery-type behaviour
O Okhay, A Tkach
Nanomaterials 11 (5), 1240, 2021
752021
Effect of nonstoichiometry on the microstructure and dielectric properties of strontium titanate ceramics
A Tkach, PM Vilarinho, AMR Senos, AL Kholkin
Journal of the European Ceramic Society 25 (12), 2769-2772, 2005
732005
Impedance analysis and conduction mechanisms of lead free potassium sodium niobate (KNN) single crystals and polycrystals: A comparison study
MA Rafiq, ME Costa, A Tkach, PM Vilarinho
Crystal Growth & Design 15 (3), 1289-1294, 2015
642015
X-ray absorption fine structure studies of Mn coordination in doped perovskite SrTiO3
I Levin, V Krayzman, JC Woicik, A Tkach, PM Vilarinho
Applied Physics Letters 96 (5), 052904, 2010
632010
Effect of Mg doping on the structural and dielectric properties of strontium titanate ceramics
A Tkach, PM Vilarinho, A Kholkin
Applied Physics A 79, 2013-2020, 2004
612004
Lattice dynamics and dielectric response of Mg-doped SrTiO3 ceramics in a wide frequency range
A Tkach, PM Vilarinho, AL Kholkin, A Pashkin, P Samoukhina, J Pokorny, ...
Journal of Applied Physics 97 (4), 044104, 2005
572005
Multiglass order and magnetoelectricity in Mn2+ doped incipient ferroelectrics
W Kleemann, S Bedanta, P Borisov, VV Shvartsman, S Miga, J Dec, ...
The European Physical Journal B 71, 407-410, 2009
562009
Role of trivalent Sr substituents and Sr vacancies in tetragonal and polar states of SrTiO3
A Tkach, TM Correia, A Almeida, JA Moreira, MR Chaves, O Okhay, ...
Acta Materialia 59 (14), 5388-5397, 2011
442011
Broad-band dielectric spectroscopy and ferroelectric soft-mode response in the Ba0. 6Sr0. 4TiO3 solid solution
T Ostapchuk, J Petzelt, J Hlinka, V Bovtun, P Kužel, I Ponomareva, ...
Journal of Physics: Condensed Matter 21 (47), 474215, 2009
442009
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