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@ARTICLE{Zahler:1014776,
      author       = {Zahler, M. Pascal and Jennings, Dylan and Kindelmann,
                      Moritz and Guillon, Olivier and Rheinheimer, Wolfgang},
      title        = {{R}eactive {FAST}/{SPS} sintering of strontium titanate as
                      a tool for grain boundary engineering},
      journal      = {Journal of the European Ceramic Society},
      volume       = {43},
      number       = {15},
      issn         = {0955-2219},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2023-03460},
      pages        = {6925 - 6933},
      year         = {2023},
      note         = {Open Access; Grants: DFG MA 1280/69-1 $\&$ Emmy
                      Noether-Program No. Rh 146/1-1},
      abstract     = {A high-pressure FAST/Spark Plasma Sintering method was used
                      to produce dense SrTiO3 ceramics at temperaturesof 1050
                      ◦C, more than 250 ◦C below typical sintering
                      temperatures. Combining SPS with solid-state
                      reactivesintering further improves densification. The
                      process resulted in fine-grained microstructures with grain
                      sizes of~300 nm. STEM-EDS was utilized for analyzing
                      cationic segregation at grain boundaries, revealing no
                      cationicsegregation at the GBs after SPS. Electrochemical
                      impedance spectroscopy indicates the presence of a
                      spacecharge layer. Space charge thicknesses were calculated
                      according to the plate capacitor equation and the
                      Mott-Schottky model. They fit the expected size range, yet
                      the corresponding space charge potentials are lower
                      thantypical values of conventionally processed SrTiO3. The
                      low space charge potential was associated to low cationicGB
                      segregation after SPS and likely results in better grain
                      boundary conductivity. The findings offer a path totailor
                      grain boundary segregation and conductivity in perovskite
                      ceramics.},
      cin          = {IEK-1 / JARA-ENERGY},
      ddc          = {660},
      cid          = {I:(DE-Juel1)IEK-1-20101013 / $I:(DE-82)080011_20140620$},
      pnm          = {1232 - Power-based Fuels and Chemicals (POF4-123)},
      pid          = {G:(DE-HGF)POF4-1232},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:001065318400001},
      doi          = {10.1016/j.jeurceramsoc.2023.07.021},
      url          = {https://juser.fz-juelich.de/record/1014776},
}