Inorganic Functional Materials

M.Sc. Jascha Rohmer

Research

Kaiserstraße 2, R. A-207
Phone: +49 431 880-6224
Telefax: +49 431 880-6203
jaro@tf.uni-kiel.de

Details

Jascha Rohmer received his Master of Science (M.Sc.) degree in Materials Science and Engineering at the Kiel University. He is a scientific researcher at the Faculty of Engineering in the chair of “Inorganic Functional Materials” and his doctoral research focuses on polycrystalline zirconia based bulk materials and is funded by the Reinhart Koselleck Project "Crystallographically Compatible Ceramic Shape Memory Materials" of the German Research Foundation (DFG).  

Zirconium and hafnium oxide based ceramics (Zr/HfO2) show a shape memory effect which is accompanied by a martensitic phase transformation. Unlike metallic materials, they are attractive for high temperature applications under extreme conditions.

His research considers the reversible phase transformation of these shape memory ceramic materials (SMC). Moreover, he is investigating the correlations between crystallographic compatibility and shape memory related properties like reversibility and thermal hysteresis. The scope of his research includes synthesis, thermal analysis and crystallographic characterization of SMC samples by DTA/DSC and XRD, respectively. The objective is focused on the search for a ceramic material showing a high reversibility in first order phase transformations upon cycling coupled with an outstanding low thermal hysteresis.

 

Talk and Publications

  • Rohmer, J., Characterization of piezo- and dielectric properties of thin films in the system Pb(ZrxTi1-x)O3 prepared by CSD, Master’s Thesis, Institute for Materials Science, Kiel University (Germany), 2018.
  • Rohmer, J., Jetter, J. and Quandt, E, Development of zirconium and hafnium oxide based thin films by pulsed laser deposition, 4th European Symposium on Intelligent Materials, Institute for Materials Science, Kiel University (Germany), 2019.
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