Search Results - "Trepakov, V V"

Photoluminescence Spectra and Unusual Temperature Shift of Zero-Phonon Emission Line of V3+ in SrTiO3 by Skvortsov, A. P., Potuček, Z., Bryknar, Z., Dejneka, A., Trepakov, V. A.

“…The paper presents the first observation of photoluminescence spectra of V 3+ impurity in SrTiO 3 . The broad band of the observed emission is located in the…”
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Evidence for strain-induced ferroelectric order in epitaxial thin-film KTaO3 by Tyunina, M, Narkilahti, J, Plekh, M, Oja, R, Nieminen, R M, Dejneka, A, Trepakov, V

“…In perovskite-structure epitaxial films, it has been theoretically predicted that the polarization and the coherence of polar order can increase with…”
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Breaking of the Cubic Symmetry in Millimeter-Size SrTiO3 Crystals: ESR Manifestations by Gabbasov, B. F., Gracheva, I. N., Nikitin, S. I., Trepakov, V. A., Yusupov, R. V.

“…— The found effect of lowering the symmetry of the crystal structure of thin (less than 1 mm) plates and bars of strontium titanate (SrTiO 3 ) single crystals…”
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Symmetry breaking in single-crystal SrTiO3 plates: EPR manifestations by Gabbasov, B F, Gracheva, I N, Rodionov, A A, Kiiamov, A G, Nikitin, S I, Zverev, D G, Trepakov, V A, Dejneka, A, Jastrabik, L, Yusupov, R V

“…Results of the electron paramagnetic resonance (EPR) studies of Fe3+ and Mn4+ impurity centers in high-quality single-crystal SrTiO3 plates with thickness are…”
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d0 ferromagnetic interface between nonmagnetic perovskites by Oja, R, Tyunina, M, Yao, L, Pinomaa, T, Kocourek, T, Dejneka, A, Stupakov, O, Jelinek, M, Trepakov, V, van Dijken, S, Nieminen, R M

“…We use computational and experimental methods to study d(0) ferromagnetism at a charge-imbalanced interface between two perovskites. In SrTiO(3)/KTaO(3)…”
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Temperature Shift of the Zero-Phonon f–f Lines of Er3+ Luminescence in Quantum Paraelectric KTaO3 by Trepakov, V. A., Skvortsov, A. P., Potůček, Z., Jastrabik, L., Dejneka, A.

“…In KTaO 3 :Er crystals, we observed a temperature shift, unusual for rare earth impurities, for narrow zero-phonon luminescence lines, due to the 4 S 3/2 → 4 I…”
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Optical spectroscopy and unusual temperature shift of f - f zero-phonon luminescence lines: KTaO3:Er by Trepakov, V. A., Skvortsov, A. P., Potucek, Z., Bryknar, Z., Nuzhnyy, D., Laguta, V., Kuznetsov, V. G., Gavrikov, A. A., Dejneka, A.

“…We present a study of KTaO 3 :Er (≈0.05%) single crystals based on a multifaceted approach including the use of optical absorption, far-infrared reflectivity,…”
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Electric Field Effect in ESR Spectra of Fe3+ and Mn4+ Centers in Thin SrTiO3 Plates by Gabbasov, B. F., Rodionov, A. A., Nikitin, S. I., Trepakov, V. A., Yusupov, R. V.

“…The electric field effect in electron spin resonance spectra of Fe 3+ and Mn 4+ impurity ions in thin oriented single-crystal plates of strontium titanate has…”
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A crystal optical study of short range polar order in the ferroelectric phase: doped incipient ferroelectrics by Markovin, P. A., Trepakov, V. A., Guzhva, M. E., Kvyatkovskii, O. E., Razdobarin, A. G., Itoh, M.

“…The temperature dependence of the principal values of the refraction of light (specific optical retardation) in Sr 1-x Ca x TiO 3 with x = 0.014, SrTi( 16 O…”
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Soft chemistry preparation methods and properties of strontium titanate nanoparticles by Makarova, M., Dejneka, A., Franc, J., Drahokoupil, J., Jastrabik, L., Trepakov, V.

“…A brief survey of chemical synthesis methods for SrTiO 3 nanoparticle fabrication is presented. The principal features of microwave, mechano-chemical,…”
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A 'soft electronic band' and the negative thermooptic effect in strontium titanate by Trepakov, V, Dejneka, A, Markovin, P, Lynnyk, A, Jastrabik, L

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Thermooptical and Dielectric Studies of a Calcium-Induced Ferroelectric Phase in a SrTiO3 Incipient Ferroelectric by Markovin, P. A., Trepakov, V. A., Guzhva, M. E., Dejneka, A., Razdobarin, A. G., Kvyatkovskii, O. E.

“…We have examined temperature changes of the light refraction, birefringence, dielectric permittivity, and dielectric hysteresis loops in Sr 1 – x Ca x TiO 3…”
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Synthesis, structure and properties of heavily Mn-doped perovskite-type SrTiO3 nanoparticles by Trepakov, V., Makarova, M., Stupakov, O., Tereshina, E.A., Drahokoupil, J., Čerňanský, M., Potůček, Z., Borodavka, F., Valvoda, V., Lynnyk, A., Jäger, A., Jastrabik, L., Dejneka, A.

“…Cubic perovskite SrTi1−xMnxO3 nanopowders with x = 0–0.5, which is much higher than the conventionally believed Mn incorporation limit, and particles sizes…”
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Features of the low-frequency polarization response in the region of the ferroelectric phase transition in multiferroic TbMnO3 by Trepakov, V. A., Kvyatkovskii, O. E., Savinov, M. E., Dejneka, A., Wang, X., Cheong, S.-W.

“…The unusual behavior of the low-frequency (10 Hz–1 MHz) permittivity in single crystals of ferroelectric multiferroic TbMnO 3 has been experimentally and…”
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Thermo-Optical Study of Short-Range Polar Order in a Ferroelectric Phase: The Ca2+ Impurity-Induced Ferroelectric Phase in SrTiO3 by Markovin, P. A., Trepakov, V. A., Guzhva, M. E., Kvyatkovskii, O. E., Andreev, D. A.

“…The magnitudes and temperature dependences of the root-mean-square of polarization fluctuations, which characterizes short-range ordering below T C , are…”
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High-frequency electron paramagnetic resonance investigation of Mn3+ centers in SrTiO3 by Azamat, D.V., Badalyan, A.G., Dejneka, A., Trepakov, V.A., Jastrabik, L., Frait, Z.

“…A high-frequency (49 and 70GHz) electron paramagnetic resonance (EPR) study is reported on SrTiO3 single crystals doped with 0.5-at% of manganese. EPR spectra…”
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Li-impurity effect in optical spectra of KTaO3:Er3+ crystals by Skvortsov, A. P., Potůček, Z., Poletaev, N. K., Syrnikov, P. P., Bryknar, Z., Dejneka, A., Jastrabik, L., Trepakov, V. A.

“…The f–f absorption and emission spectra of Er 3+ impurities were observed and identified in KTaO 3 and K 1 – x Li x TaO 3 single crystals. It was shown that Li…”
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Photoconductivity and the structural phase transition in SrTiO3 by Rossella, F., Galinetto, P., Samoggia, G., Trepakov, V., Jastrabik, L.

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Experimental evidences of the shape-induced structural distortion of SrTiO3 single crystals from impurity Mn4+ ions electron paramagnetic resonance by Gabbasov, B F, Gracheva, I N, Nikitin, S I, Zverev, D G, Dejneka, A, Trepakov, V A, Yusupov, R V

“…A study of high-quality SrTiO3 single crystals doped with the Mn4+ ions in the cubic phase (T > 105 K) with X-band electron paramagnetic resonance reveals…”
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EPR investigation of the trivalent chromium complexes in SrTiO3 by Azamat, D.V., Dejneka, A., Lančok, J., Jastrabik, L., Trepakov, V.A., Bryknar, Z., Neverova, E.V., Badalyan, A.G.

“…The trivalent chromium centers were investigated by means of electron paramagnetic resonance (EPR) in SrTiO3 single crystals grown using the Verneuil…”
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