% 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{AndroDubraja:418800,
      author       = {Androš Dubraja, Lidija and Kruk, Robert and Brezesinski,
                      Torsten},
      title        = {{R}obust {M}acroscopic {P}olarization of {B}lock
                      {C}opolymer-{T}emplated {M}esoporous {P}erovskite-{T}ype
                      {T}hin-{F}ilm {F}erroelectrics},
      journal      = {Advanced electronic materials},
      volume       = {5},
      number       = {1},
      issn         = {2199-160X},
      address      = {Chichester},
      publisher    = {Wiley},
      reportid     = {PUBDB-2019-00716},
      pages        = {1800287},
      year         = {2019},
      note         = {© WILEY‐VCH Verlag GmbH $\&$ Co. KGaA, Weinheim},
      abstract     = {Ferroelectrics play an important role in various
                      applications, from electronics to mechanics, optics, and
                      biomedicine. Here, the preparation of a series of block
                      copolymer–templated mesostructured (lead‐free) oxide
                      ferroelectrics is described. Distorted perovskite LiNbO$_3$,
                      LiTaO$_3$, and solid solution LiNbO$_3$–LiTaO$_3$ are
                      produced as single‐phase thin films of good quality by the
                      dip‐coating method using an evaporation‐induced
                      self‐assembly process. They are investigated by a
                      combination of electron microscopy, X‐ray diffraction and
                      scattering, X‐ray photoelectron spectroscopy, and
                      time‐of‐flight secondary ion mass spectrometry. Thermal
                      treatment at ≥600 °C is required to initiate
                      crystallization. Both the pore ordering and thermal
                      stability increase with increasing tantalum content.
                      Ferroelectric testing through dynamic and remanent
                      polarization experiments at ambient conditions confirm the
                      uniformity and purity of the LiNbO$_3$ thin‐film system.
                      Results from positive‐up and negative‐down test
                      measurements reveal a stable switching polarization of 2 µC
                      cm$^{−2}$, with a coercive field of 50 kV cm$^{−1}$.
                      Taken together, the lithium niobium and tantalum oxides
                      prepared in the work are rare examples of sol–gel derived
                      perovskite‐type materials with an ordered mesoporous
                      morphology. Because of the spontaneous electrical
                      polarization observed for LiNbO$_3$, such block
                      copolymer–templated thin films might pave the way for the
                      development of a new class of 3D nanocomposite ferroics.},
      cin          = {DOOR},
      ddc          = {621.3},
      cid          = {I:(DE-H253)HAS-User-20120731},
      pnm          = {899 - ohne Topic (POF3-899)},
      pid          = {G:(DE-HGF)POF3-899},
      experiment   = {EXP:(DE-H253)D-BW4-20150101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000455220900020},
      doi          = {10.1002/aelm.201800287},
      url          = {https://bib-pubdb1.desy.de/record/418800},
}