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@ARTICLE{Meuffels:56545,
      author       = {Meuffels, P.},
      title        = {{P}ropane gas sensing with high-density
                      {S}r{T}i0.6{F}e0.4{O}(3-gamma) ceramics evaluated by
                      thermogravimetric analysis},
      journal      = {Journal of the European Ceramic Society},
      volume       = {27},
      issn         = {0955-2219},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {PreJuSER-56545},
      pages        = {285},
      year         = {2007},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {Semi-conducting SrTi0.6Fe0.4O(3-delta) in the form of
                      porous thick films might be of interest as a novel material
                      for resistive hydrocarbon sensor applications. As the
                      underlying gas-sensing mechanism is still a matter of
                      question, thermogravimetric analysis was performed on
                      high-density (>= $99\%)$ SrTi0.6Fe0.4O(3-delta) ceramic
                      specimens in order to investigate whether bulk properties
                      are affected by the catalytic oxidation of propane at the
                      material surface. At temperatures 250-400 degrees C, bulk
                      oxygen content was found to significantly decrease upon
                      exposure to traces of propane (0-3000 ppm) in a background
                      of $20\%$ $O-2/80\%$ Ar. Lattice oxygen is sufficiently
                      mobile in this compound so that reducing surface reactions
                      are followed by a bulk redox reaction even at low or
                      moderate temperatures. Concomitant changes in the electrical
                      resistance of dense ceramics are consistent with this
                      picture. The hydrocarbon sensitivity of
                      SrTi0.6Fe0.40O(3-delta) artifacts seems thus to a large
                      extent to be correlated to modifications in the bulk defect
                      chemistry of the material. (c) 2006 Elsevier Ltd. All rights
                      reserved.},
      keywords     = {J (WoSType)},
      cin          = {IFF-6},
      ddc          = {660},
      cid          = {I:(DE-Juel1)VDB786},
      pnm          = {Kondensierte Materie},
      pid          = {G:(DE-Juel1)FUEK414},
      shelfmark    = {Materials Science, Ceramics},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000242565400039},
      doi          = {10.1016/j.jeurceramsoc.2006.05.078},
      url          = {https://juser.fz-juelich.de/record/56545},
}