Search Results - "Knizek, K"

Structure and magnetic state of hydrothermally prepared Mn-Zn ferrite nanoparticles by Kaman, O., Kubániová, D., Knížek, K., Kubíčková, L., Klementová, M., Kohout, J., Jirák, Z.

“…•MnZn ferrite particles with a size of ≈ 12 nm are prepared by hydrothermal synthesis.•Analysis by Mössbauer spectroscopy and neutron diffraction reveals a…”
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A multiferroic material to search for the permanent electric dipole moment of the electron by Spaldin, N. A, Rushchanskii, K. Z, Kamba, S, Goian, V, Vaněk, P, Savinov, M, Prokleška, J, Nuzhnyy, D, Knížek, K, Laufek, F, Eckel, S, Lamoreaux, S. K, Sushkov, A. O, Ležaić, M

“…We describe the first-principles design and subsequent synthesis of a new material with the specific functionalities required for a solid-state-based search…”
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Crystal field parameters with Wannier functions: Application to rare-earth aluminates by Novak, P, Knizek, K, Kunes, J

“…A method to calculate the crystal field parameters is proposed and applied to trivalent rare-earth impurities in yttrium aluminate and to Tb super(3+) ion in…”
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Crystal field and magnetism with Wannier functions: Orthorhombic rare-earth manganites by Novák, P., Nekvasil, V., Knížek, K.

“…The crystal field parameters of seven R3+ ions (R=Pr, Nd, Sm, Eu, Gd, Tb, Dy) in RMnO3 perovskites were calculated using the combination of the band structure…”
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Distribution of cations in nanosize and bulk Co-Zn ferrites by Veverka, M, Jirák, Z, Kaman, O, Knížek, K, Maryško, M, Pollert, E, Závěta, K, Lančok, A, Dlouhá, M, Vratislav, S

“…The structural and magnetic properties of Co(1-x)Zn(x)Fe2O4 ferrites (Co-Zn ferrites) are investigated in a narrow compositional range around x = 0.6, which is…”
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Non-collinear magnetic structures of TbCoO3 and DyCoO3 by Knížek, K., Jirák, Z., Novák, P., de la Cruz, Clarina

“…The orthoperovskites TbCoO3 and DyCoO3 with Co3+ in a non-magnetic low-spin state have been investigated by neutron diffraction down to 0.25 K. Magnetic…”
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Phase transition in Pr0.5Ca0.5CoO3 and related cobaltites by Hejtmánek, J., Jirák, Z., Kaman, O., Knížek, K., Šantavá, E., Nitta, K., Naito, T., Fujishiro, H.

“…We present an extensive investigation (magnetic, electric and thermal measurements and X-ray absorption spectroscopy) of the Pr 0.5 Ca 0.5 CoO 3 and (Pr 1− y Y…”
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Crystal field of rare earth impurities in LaF3 by NOVAK, P, KUNES, J, KRUZEK, K

“…•Crystal field of all trivalent lanthanide impurities in LaF3 is calculated ab initio.•Hybridization of 4f states with valence states of ligands is…”
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Magnetodielectric effect and optic soft mode behaviour in quantum paraelectric EuTiO3 ceramics by Kamba, S, Nuzhnyy, D, Vaněk, P, Savinov, M, Knížek, K, Shen, Z, Šantavá, E, Maca, K, Sadowski, M, Petzelt, J

“…Infrared reflectivity and time-domain terahertz transmission spectra of EuTiO3 ceramics revealed a polar optic phonon at 6-300 K whose softening is fully…”
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Test System for Thermoelectric Modules and Materials by Hejtmánek, J., Knížek, K., Švejda, V., Horna, P., Sikora, M.

“…We present a design for a complex measuring device that enables its user to assess the parameters of power-generating thermoelectric modules (TEMs) (or bulk…”
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Silica encapsulated manganese perovskite nanoparticles for magnetically induced hyperthermia without the risk of overheating by Kaman, O, Pollert, E, Veverka, P, Veverka, M, Hadová, E, Knízek, K, Marysko, M, Kaspar, P, Klementová, M, Grünwaldová, V, Vasseur, S, Epherre, R, Mornet, S, Goglio, G, Duguet, E

“…Nanoparticles of manganese perovskite of the composition La(0.75)Sr(0.25)MnO(3) uniformly coated with silica were prepared by encapsulation of the magnetic…”
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Oriented thin films of Na0.6CoO2 and Ca3Co4O9 deposited by spin-coating method on polycrystalline substrate by Buršík, J., Soroka, M., Knížek, K., Hirschner, J., Levinský, P., Hejtmánek, J.

“…Thin film of two thermoelectric materials, NaxCoO2 (x~0.6) and Ca3Co4O9, was deposited using the sol–gel spin-coating method on a polycrystalline…”
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Synthesis and magnetic properties of Co1―xZnxFe2O4+γ nanoparticles as materials for magnetic fluid hyperthermia by VEVERKA, M, VEVERKA, P, JIRAK, Z, KAMAN, O, KNIZEK, K, MARYSKO, M, POLLERT, E, ZAVETA, K

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Oriented Y-type hexagonal ferrite thin films prepared by chemical solution deposition by Buršík, J., Kužel, R., Knížek, K., Drbohlav, I.

“…Thin films of Ba2Zn2Fe12O22 (Y) hexaferrite were prepared through the chemical solution deposition method on SrTiO3(111) (ST) single crystal substrates using…”
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New T c -tuned magnetic nanoparticles for self-controlled hyperthermia by Pollert, E., Knížek, K., Maryško, M., Kašpar, P., Vasseur, S., Duguet, E.

“…Manganese perovskite nanoparticles of the XRD size in the range of 30–49 nm were synthesized via sol–gel technique employing citric acid and ethylene glycol…”
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The calculation of rare-earth levels in layered cobaltates Rx/3CoO2 (x≦1) by Novák, P., Knížek, K., Jirák, Z., Buršík, J.

“…We studied theoretically the crystal field and Zeeman split electronic levels of trivalent rare earths that are distributed over trigonal prismatic sites of…”
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Peculiar magnetic properties of Er conditioned Ni43Co7Mn31Ga19 at ambient and hydrostatic pressures by Kaštil, J., Kamarád, J., Knížek, K., Arnold, Z., Javorský, P.

“…► Sample of Er conditioned Ni43Co7Mn31Ga19 was prepared and studied. ► Magnetic properties were investigated in mag. field and high hydrostatic pressures. ►…”
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Structural anomalies associated with the electronic and spin transitions in LnCoO3 by KNIZEK, K, JIRAK, Z, HEJTMANEK, J, VEVERKA, M, MARYSKO, M, MARIS, G, PALSTRA, T. T. M

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The magnetic and hyperthermia studies of bare and silica-coated La0.75Sr0.25MnO3 nanoparticles by Kaman, O., Veverka, P., Jirák, Z., Maryško, M., Knížek, K., Veverka, M., Kašpar, P., Burian, M., Šepelák, V., Pollert, E.

“…The magnetic nanoparticles of La 0.75 Sr 0.25 MnO 3 perovskite manganite with a controlled size were prepared via sol–gel procedure, followed by thermal…”
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New Tc-tuned magnetic nanoparticles for self-controlled hyperthermia by POLLERT, E, KNIZEK, K, MARYSKO, M, KASPAR, P, VASSEUR, S, DUGUET, E

“…Manganese perovskite nanoparticles of the XRD size in the range of 30-49nm were synthesized via sol-gel technique employing citric acid and ethylene glycol…”
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