TU Berlin

Keramische WerkstoffeFunctional oxide ceramics

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Functional oxide ceramics

Lupe

We develop new synthesis and processing methods and explore the functional properties of complex oxide ceramics. Oxide ceramics possess a variety of properties that allow for a range of applications. We are especially interested in sensors, transparent conductive oxides, photocatalysts, thermoelectrics, multiferroics, bioceramics and electrode materials.

Topics

  • synthesis of metastable oxide polymorphs
  • growth of single crystals
  • AMn2O4 oxides with spinel structure, where A=Al3+, Ga3+, In3+...
  • multiferroic hexagonal layered oxides AMnO3, where A= Y3+, In3+
  • in-situ characterisation of structural phase transitions
  • high pressure and high temperature studies

Financial Support / Projects

  • DFG_Schwerpunktprogramm 1415 "Kristalline Nichtgleichgewichtsphasen - Präparation, Charakterisierung und in situ-Untersuchung der Bildungsmechanismen"
Representative publications
1. Orthorhombic In2O3 – a metastable polymorph of indium sesquioxide, Angew. Chem. Int. Ed., 2013, 52, 6531–6535
M. F. Bekheet, M. R. Schwarz, S. Lauterbach, H.-J. Kleebe, P. Kroll, R. Riedel, A. Gurlo
2. In situ high pressure high temperature experiments in multi-anvil assembly’s with bixbyite-type In2O3 and synthesis of corundum-type and orthorhombic In2O3 polymorphs, High Pres. Res., 2013, 33, 697-711
M. F. Bekheet, M. Schwarz, S. Lauterbach, H.-J. Kleebe, P. Kroll, A. Stewart, U. Kolb, R. Riedel, A. Gurlo
3. Phase segregation in Mn-doped In2O3: in-situ high-pressure high-temperature synchrotron studies in multi-anvil assemblies, RSC Advances, 2013, 3, 5357-5360
M. F. Bekheet, M. R. Schwarz, M. M. Müller, S. Lauterbach, H.-J. Kleebe, R. Riedel, A. Gurlo
4. Low temperature chemical synthesis of MnIn2O4 spinel, Dalton Transactions, 2012, 41, 3374-3376
M. F. Bekheet, G. Miehe, C. Fasel, A. Gurlo, R. Riedel
5. YMnO3-ZnO Thermoelectrics, Z. Anorg. Allg. Chem., 638, 2012, 10, 1630
M. F. Bekheet, A. Gurlo, K. Morita, R. Riedel, H.-J. Kleebe, T. Sparks, D. R. Clarke

 Contact: Maged Bekheet (Maged.Bekheet(at)ceramics.tu-berlin.de)

 

 

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