% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Falkenstein:826300,
      author       = {Falkenstein, Andreas and Müller, David and De Souza, Roger
                      A. and Martin, Manfred},
      title        = {{C}hemical relaxation experiments on mixed conducting
                      oxides with large stoichiometry deviations},
      journal      = {Solid state ionics},
      volume       = {280},
      issn         = {0167-2738},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2017-00533},
      pages        = {66 - 73},
      year         = {2015},
      abstract     = {Relaxation techniques are widely used to determine the mass
                      transport parameters of oxygen, namely the chemical surface
                      exchange coefficient kchem and the chemical diffusion
                      coefficient Dchem, of mixed ionic-electronic conductors. The
                      investigation of technologically relevant mixed conducting
                      oxides that exhibit high values of both kchem and Dchem by
                      relaxation methods faces the problem that the amount of
                      oxygen released or taken up by the sample during a
                      relaxation experiment is not negligible. In fact, it can be
                      of the same order as the amount supplied by the gas stream;
                      the desired step-like change in oxygen activity that
                      initiates the relaxation process thus becomes ill defined.
                      In this study we examine strategies to identify and
                      counteract this problem: As a model system we use the mixed
                      ionic electronic conducting perovskite-type oxide
                      Ba0.5Sr0.5Co0.8Fe0.2O3 − δ, which exhibits
                      extraordinarily high oxygen exchange kinetics, and we
                      perform conductivity relaxation experiments that monitor the
                      oxygen partial pressure in the vicinity of the sample.},
      cin          = {PGI-6},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-6-20110106},
      pnm          = {522 - Controlling Spin-Based Phenomena (POF3-522)},
      pid          = {G:(DE-HGF)POF3-522},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000362605500009},
      doi          = {10.1016/j.ssi.2015.07.023},
      url          = {https://juser.fz-juelich.de/record/826300},
}