Annealing induced effect on the physical properties of ion-beam sputtered 0.5 Ba(Zr0.2Ti0.8)O-3-0.5 (Ba0.7Ca0.3)TiO3-delta ferroelectric thin films

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10389409" target="_blank" >RIV/00216208:11320/18:10389409 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.apsusc.2018.02.269" target="_blank" >https://doi.org/10.1016/j.apsusc.2018.02.269</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.apsusc.2018.02.269" target="_blank" >10.1016/j.apsusc.2018.02.269</a>

Result language
angličtina
Original language name
Annealing induced effect on the physical properties of ion-beam sputtered 0.5 Ba(Zr0.2Ti0.8)O-3-0.5 (Ba0.7Ca0.3)TiO3-delta ferroelectric thin films
Original language description
This work reports thermal annealing induced effect on the structural, optical, chemical and ferroelectric properties of ion-beam sputtered lead-free ferroelectric 0.5 Ba(Zr0.2Ti0.8)O-3 - 0.5(Ba0.7Ca0.3)TiO3-delta (0.5BZT-0.5BCT) thin films. X-ray diffraction studies reveal that the tetragonality increases with the annealing temperature (T-a), while photoluminescence and X-ray photoelectron spectroscopy studies confirm that this effect is associated with the annihilation of the oxygen vacancies as well as changes in the Ba2+ coordination. The films annealed at 750 degrees C show a remarkable remnant polarization of P-r = 45.0 mu C/cm(2), with a coercive field of 32 kV/cm. The temperature dependence of the spontaneous polarization of the 0.5BZT-0.5BCT film reveals a mean field behavior of the polarization and the fatigue study reveals that P-r only decreases 3% after passing 10(9) cycles. Therefore the high remnant polarization and its high P-r stability make these films as promising candidates for memory applications.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10305 - Fluids and plasma physics (including surface physics)

Project
<a href="/en/project/LM2015057" target="_blank" >LM2015057: Surface Physics Laboratory – Materials Science Beamline</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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