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PreprintCC BY-NC-ND 4.0arXiv

Phase-selective growth of water-soluble strontium aluminate via sputtering deposition for freestanding oxide membranes

  • Evgenios Stylianidis
  • Marie Dallocchio
  • Bernat Mundet
  • Lucia Varbaro
  • Clementine Thibault
  • Christo Guguschev
  • Mario Brützam
  • Javier Herrero
  • Marta Gibert
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Abstract

We report the epitaxial growth of high-quality water-soluble strontium aluminate films via sputtering deposition. We systematically investigate the dependence of the films structural quality on the growth conditions and we show that we can selectively grow, using the same target, both the cubic Sr3Al2O6 and the tetragonal Sr4Al2O7 phases by varying the atmosphere during growth. Using these water-soluble sacrificial layers we then synthesize ferromagnetic freestanding Sm2NiMnO6 membranes. By means of X-ray diffraction, synchrotron spectroscopic techniques and SQUID magnetometry, we demonstrate that our freestanding films exhibit properties comparable to epitaxial films.

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Cite

BibTeXRIS
BibTeX
@misc{stylianidis2026phaseselective,
  title = {{Phase-selective growth of water-soluble strontium aluminate via sputtering deposition for freestanding oxide membranes}},
  author = {Evgenios Stylianidis and Marie Dallocchio and Bernat Mundet and Lucia Varbaro and Clementine Thibault and Christo Guguschev and Mario Brützam and Javier Herrero and Marta Gibert},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.32760},
  eprint = {2609.32760},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.32760},
  note = {CC BY-NC-ND 4.0},
}
RIS
TY  - UNPB
TI  - Phase-selective growth of water-soluble strontium aluminate via sputtering deposition for freestanding oxide membranes
AU  - Evgenios Stylianidis
AU  - Marie Dallocchio
AU  - Bernat Mundet
AU  - Lucia Varbaro
AU  - Clementine Thibault
AU  - Christo Guguschev
AU  - Mario Brützam
AU  - Javier Herrero
AU  - Marta Gibert
PY  - 2026
DA  - 2026/09/26
PB  - arXiv
DO  - 10.48550/arxiv.2609.32760
UR  - https://arxiv.org/abs/2609.32760
AB  - We report the epitaxial growth of high-quality water-soluble strontium aluminate films via sputtering deposition. We systematically investigate the dependence of the films structural quality on the growth conditions and we show that we can selectively grow, using the same target, both the cubic Sr3Al2O6 and the tetragonal Sr4Al2O7 phases by varying the atmosphere during growth. Using these water-soluble sacrificial layers we then synthesize ferromagnetic freestanding Sm2NiMnO6 membranes. By means of X-ray diffraction, synchrotron spectroscopic techniques and SQUID magnetometry, we demonstrate that our freestanding films exhibit properties comparable to epitaxial films.
ER  -