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@ARTICLE{Schulthei:857842,
      author       = {Schultheiß, Jan and Liu, Lisha and Kungl, Hans and Weber,
                      Michael and Kodumudi Venkataraman, Laltiha and Checchia,
                      Stefano and Damjanovic, Dragan and Daniels, John E. and
                      Koruza, Jurij},
      title        = {{R}evealing the sequence of switching mechanisms in
                      polycrystalline ferroelectric/ferroelastic materials},
      journal      = {Acta materialia},
      volume       = {157},
      issn         = {1359-6454},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science85412},
      reportid     = {FZJ-2018-06809},
      pages        = {355 - 363},
      year         = {2018},
      abstract     = {Ferroelectric materials find application in numerous
                      electronic devices and are continuously enabling the
                      development of new technologies. Their versatility is
                      intimately related to the unique property to switch the
                      polarization with electric fields. However, the switching
                      mechanisms in polycrystalline ferroelectric materials remain
                      insufficiently understood. Here we reveal that switching in
                      ferroelectric/ferroelastic materials consists of a sequence
                      of individual events, separated into three regimes: rapid
                      movement of non-180° domain walls, main switching phase
                      with 180° and non-180° switching events, and creep-like
                      non-180° domain wall movement. The determination of the
                      mechanisms was enabled by a novel measurement approach,
                      simultaneously tracking the time dynamics of switched
                      polarization, macroscopic strain, and structural changes.
                      Time-resolved in situ synchrotron diffraction allowed direct
                      insight into the non-180° domain wall dynamics and lattice
                      strains and gave evidence for strong time correlation of
                      non-180° switching events in different grains of the
                      polycrystalline material. The obtained results open new
                      opportunities for targeted manipulation of individual
                      switching events and tuning of material's functional
                      properties.},
      cin          = {IEK-9},
      ddc          = {670},
      cid          = {I:(DE-Juel1)IEK-9-20110218},
      pnm          = {131 - Electrochemical Storage (POF3-131)},
      pid          = {G:(DE-HGF)POF3-131},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000445318800030},
      doi          = {10.1016/j.actamat.2018.07.018},
      url          = {https://juser.fz-juelich.de/record/857842},
}