Crystal Research and Technology

Cover image for Vol. 51 Issue 9

Editor: Wolfgang Neumann (Editor-in-Chief), Klaus-W. Benz (Consulting Editor)

Online ISSN: 1521-4079

Associated Title(s): physica status solidi (a), physica status solidi (b), physica status solidi (RRL) - Rapid Research Letters

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Recently Published Articles

  1. Strontium titanate: From symmetry changes to functionality

    Hartmut Stöcker, Juliane Hanzig, Matthias Zschornak, Erik Mehner, Sven Jachalke, Carsten Richter, Florian Hanzig, Falk Meutzner, Tilmann Leisegang and Dirk C. Meyer

    Version of Record online: 22 SEP 2016 | DOI: 10.1002/crat.201600222

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    Pure strontium titanate exhibits a cubic perovskite-type structure, but many approaches to break this high degree of symmetry are accessible. Since oxygen vacancies are the most prominent and most mobile defect species in strontium titanate, they play a crucial role also for structural changes due to external influences. Possible functionalities range from tuning of permittivity and conductivity to field-induced structure changes, which lead to applications as solid-state battery or switchable pyroelectric.

  2. Comparative study of dislocation density characterizations on silicon

    B. Gallien, S. Bailly and T. Duffar

    Version of Record online: 22 SEP 2016 | DOI: 10.1002/crat.201600224

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    This study involves characterizing the sample with four different methods. Before each characterization, the sample is polished to obtain a mirror surface, by SiC grinding (EPA 1200 and 2400) and diamond paste polishing down to 1 μm. Then, specific chemical etching and dislocation density measurement are performed.

  3. Reevaluation of phase relations in the chemical system neodymium lutetium oxide NdLuO3

    Tamino Hirsch, Reinhard Uecker and Detlef Klimm

    Version of Record online: 22 SEP 2016 | DOI: 10.1002/crat.201600237

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    The phase relations of NdLuO3 were investigated. A mixture of solid solutions in the cubic C and in the monoclinic B rare earth oxide structure exists between 1200 and 1650 °C. The C-phase is dominated by Lu content while the B-phase is Nd rich. With rising temperature, the portion of Nd in the C-phase is increased and lowered for the B-phase. No evidence for stability of perovskitic NdLuO3 could be found. Thermal signals up to 2184 °C were examined.

  4. Observation of the δ to ε Zr-hydride transition by in-situ synchrotron X-ray diffraction

    T. Maimaitiyili, A. Steuwer, J. Blomqvist, C. Bjerkén, M.S. Blackmur, O. Zanellato, J. Andrieux and F. Ribeiro

    Version of Record online: 22 SEP 2016 | DOI: 10.1002/crat.201600234

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    The formation and dissolution of hydrides in commercially pure zirconium powder investigated in-situ using high-energy synchrotron X-ray radiation. Experimental results showed a continuous phase transition between the δ and ε zirconium hydride phases with indication of a second order phase transformation.

  5. Phase formation in molten system (Na/K)2O-TiO2-P2O5. Crystal structures of NASICON and langbeinite-related phosphates (K/Na)1+xTi2(PO4)3 (x = 0 and 0.357)

    Nataliia Strutynska, Marina Bondarenko, Nikolay Slobodyanik, Vyacheslav Baumer, Igor Zatovsky, Kostyantin Bychkov and Anna Puzan

    Version of Record online: 20 SEP 2016 | DOI: 10.1002/crat.201600207

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    Crystallization of high temperature self-flux of system Na2O-K2O-TiO2-P2O5 was investigated. The conditions of complex phosphates formation of K0.10Na0.90Ti2(PO4)3 (NASICON-related) and K0.877Na0.48TiІІІ0.357TiІV1.643(PO4)3 (langbeinite-related) have been established. The influence of alkaline metal nature on the structure formation of complex phosphates in the high temperature self-fluxes is discussed.