Variable resistor made by repeated steps of epitaxial deposition and lithographic structuring of oxide layers by using wet chemical etchants

Dieter Weber; Róza Vöfély; Yuehua Chen; Yulia Mourzina; Ulrich Poppe

doi:10.1016/j.tsf.2012.11.118

Variable resistor made by repeated steps of epitaxial deposition and lithographic structuring of oxide layers by using wet chemical etchants

Materials Science 2013-01-22 v1 Mesoscale and Nanoscale Physics

Authors: Dieter Weber , Róza Vöfély , Yuehua Chen , Yulia Mourzina , Ulrich Poppe

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Abstract

Variable resistors were constructed from epitaxial SrRuO3 (SRO), La0.67Sr0.33MnO3 (LSMO) and SrTiO3 layers with perovskite crystal structure. Each layer was patterned separately by lithographic methods. Optimized wet chemical etchants and several polishing steps in organic solvents allowed good epitaxy of subsequent layers, comparable to epitaxy on pristine substrates. Periodate as the oxidizing agent for SRO and iodide with ascorbic acid as the reducing agents for LSMO were used to attack these chemically resistant oxides. The final devices changed their conductance in a similar manner to previously described variable resistors that were defined with shadow masks.

Keywords

variable resistor epitaxial deposition lithographic structuring wet chemical etching oxide layers

Cite

@article{arxiv.1301.4828,
  title  = {Variable resistor made by repeated steps of epitaxial deposition and lithographic structuring of oxide layers by using wet chemical etchants},
  author = {Dieter Weber and Róza Vöfély and Yuehua Chen and Yulia Mourzina and Ulrich Poppe},
  journal= {arXiv preprint arXiv:1301.4828},
  year   = {2013}
}

Variable resistor made by repeated steps of epitaxial deposition and lithographic structuring of oxide layers by using wet chemical etchants

Abstract

Keywords

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