Search Results - "PANKRATH, R"

Composition dependence of the phase transition temperature in SrxBa1−xNb2O6 by David, C., Granzow, T., Tunyagi, A., Wöhlecke, M., Woike, Th, Betzler, K., Ulex, M., Imlau, M., Pankrath, R.

“…The temperature dependence of the spontaneous polarization in strontium–barium–niobate single crystals with varying Sr/Ba ratio is presented. The temperature…”
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Dynamic light scattering at domains and nanoclusters in a relaxor ferroelectric by Kleemann, W, Licinio, P, Woike, T, Pankrath, R

“…In the probably first successful photon correlation spectroscopy experiment on a crystalline solid, inelastic light scattering of vibrating random-field-pinned…”
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Absorption spectroscopy and energy levels of rare earth impurity centres in Srx Ba1-x Nb2O6 crystals by Demirbilek, R., Kutsenko, A. B., Pankrath, R., Kapphan, S. E.

“…The absorption spectra of Ce3+, Nd3+, Eu3+, Tb3+, Er3+, Tm3+ and Yb3+ rare earth (RE) impurity ions incorporated in Srx Ba1–x Nb2O6 (SBN) crystals were studied…”
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Aging in the ferroic random-field ising model system strontium-barium niobate by MIGA, S, DEC, J, KLEEMANN, W, PANKRATH, R

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Temperature dependent determination of the linear electrooptic coefficient r33 in Sr0.61Ba0.39Nb2O6 single crystals by means of light-induced scattering by GOULKOV, M, GRANZOW, T, DÖRFLER, U, WOIKE, Th, IMLAU, M, PANKRATH, R, KLEEMANN, W

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Growth and dielectric properties of congruently melting Ba1-xCaxTiO3 crystals by KUPER, C, PANKRATH, R, HESSE, H

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Instrumental neutron activation and absorption spectroscopy of photorefractive strontium-barium niobate single crystals doped with cerium by Woike, Th, Weckwerth, G., Palme, H., Pankrath, R.

“…Instrumental neutron activation analysis (INAA) was applied to determine the compositions of Sr x Ba 1− x Nb 2O 6: Ce single crystals with x = 0.61, grown from…”
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Local electric-field-driven repoling reflected in the ferroelectric polarization of Ce-doped Sr0.61Ba0.39Nb2O6 by Granzow, T., Dörfler, U., Woike, Th, Wöhlecke, M., Pankrath, R., Imlau, M., Kleemann, W.

“…We present pyroelectric measurements with the relaxor-ferroelectric strontium barium niobate in the phase transition regime. It is demonstrated that domains…”
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Performance of photorefractive crystals as derived from EPR-based defect studies: application to BaTiO3 :Rh and Ba0.77Ca0.23TiO3:Rh by MEYER, M, SCHIRMER, O. F, PANKRATH, R

“…A method is introduced which allows us to predict the performance of a photorefractive material quantitatively using electron paramagnetic resonance…”
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Study of beam-fanning hysteresis in photorefractive SBN:Ce: light-induced and primary scattering as functions of polar structure by GOULKOV, M. Y, GRANZOW, T, DÖRFLER, U, WOIKE, T, IMLAU, M, PANKRATH, R

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Photorefractive properties of Cr-doped Sr0.61Ba0.39Nb2O6 related to crystal purity and doping concentration by Woike, T., Dörfler, U., Tsankov, L., Weckwerth, G., Wolf, D., Wöhlecke, M., Granzow, T., Pankrath, R., Imlau, M., Kleemann, W.

“…The purity and the concentrations of the constituents Sr, Ba, Nb and Cr were determined in single crystals of chromium-doped Sr0.61Ba0.39Nb2O6 (SBN) by…”
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Light-induced charge-transport properties of photorefractive barium-calcium-titanate crystals doped with rhodium by Veenhuis, H., Börger, T., Peithmann, K., Flaspöhler, M., Buse, K., Pankrath, R., Hesse, H., Krätzig, E.

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Aging of the ferroelectric hysteresis in Ce-doped strontium-barium-niobate observed by holographic phase gratings by DÖRFLER, U, GRANZOW, T, WOIKE, Th, WÖHLECKE, M, PANKRATH, R, IMLAU, M

“…The ferroelectric hysteresis of Strontium-Barium-Niobate single crystals doped with Ce (SBN:Ce) is measured by a holographic method. The hysteresis loop…”
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Effects of rare-earth impurity doping on the ferroelectric and photorefractive properties of strontium–barium niobate crystals by Volk, T., Ivleva, L., Lykov, P., Polozkov, N., Salobutin, V., Pankrath, R., Wöhlecke, M.

“…Doping strontium–barium niobate (SBN) crystals with rare earth (RE) impurities strongly lowers the ferroelectric phase transition T c which results in a…”
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XPS study of photorefractive Sr0.61Ba0.39Nb2O6:Ce crystals by NIEMANN, R, BUSE, K, PANKRATH, R, NEUMANN, M

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Relaxor Ferroelectrics-From Random Field Models to Domain State Physics by KLEEMANN, W., DEC, J., MIGA, S., PANKRATH, R.

“…Substitutional charge disorder in ferroelectrics giving rise to quenched electric random-fields (RFs) is probably at the origin of their relaxor behavior…”
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Study of beam-fanning hysteresis in photo- refractive SBN:Ce: light-induced and primary scattering as functions of polar structure by Goulkov, M.Y., Granzow, T., D rfler, U., Woike, T., Imlau, M., Pankrath, R.

“…We study light-induced scattering (beam-fanning) in the photorefractive crystal SBN:Ce as a function of the polar structure of the crystal. The spatial…”
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Intensity and wavelength dependence of the photoconductivity in Cr-doped Sr0.61Ba0.39Nb2O6 by DÖRFLER, U, GRANZOW, T, WOIKE, Th, WÖHLECKE, M, IMLAU, M, PANKRATH, R

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Photoluminescence and thermoluminescence in SBN:Cr crystals by GAO, M, KAPPHAN, S, PANKRATH, R

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Ferroelectric properties of strontium barium niobate crystals doped with rare-earth metals by Volk, T. R., Salobutin, V. Yu, Ivleva, L. I., Polozkov, N. M., Pankrath, R., Woehlecke, M.

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