| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Okhay, O.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2019Tuning electrical and thermoelectric properties of freestanding graphene oxide papers by carbon nanotubes and heat treatmentcitations
- 2018Mechanical strain engineering of dielectric tunability in polycrystalline SrTiO3 thin filmscitations
- 2016Thin film versus paper-like reduced graphene oxide: Comparative study of structural, electrical, and thermoelectrical propertiescitations
- 2015Drastic modification of graphene oxide properties by incorporation of nickel: a simple inorganic chemistry approachcitations
- 2013Conductivity enhancement and resistance changes in polymer films filled with reduced graphene oxidecitations
- 2013Electrical conductivity of LTA-zeolite in the presence of poly(vinyl alcohol) and poly(vinyl pyrrolidone) polymerscitations
- 2011Enhancement of tetragonality and role of strontium vacancies in heterovalent doped SrTiO.sub.3./sub.citations
- 2011Role of trivalent Sr substituents and Sr vacancies in tetragonal and polar states of SrTiO3citations
- 2011Role of trivalent Sr substituents and Sr vacancies in tetragonaland polar states of SrTiO.sub.3./sub.citations
- 2011Enhancement of tetragonality and role of strontium vacancies in heterovalent doped SrTiO3citations
- 2008High dielectric constant and tunability of strontium titanate ceramics modified by chromium dopingcitations
Places of action
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article
Enhancement of tetragonality and role of strontium vacancies in heterovalent doped SrTiO3
Abstract
The effect of Sr vacancies on the behavior of strontium titanate with trivalent dopants (La3+, Gd3+, and Y3+) substituting Sr2+ ions is reported. A remarkable shift of the antiferrodistortive transition temperature T-a is revealed by Raman spectroscopy for just a small content of dopant. It is shown that a unique linear dependence of Ta versus tolerance factor is obtained when Sr-vacancies are taken into account. A vacancy size value of similar to 1.54 angstrom is estimated, which is similar to 7% larger than Sr2+ radius. This size difference enables explaining the unexpected increase of lattice parameter with increasing Bi3+ content in Sr1-1.5xBixTiO3. (C) 2011 American Institute of Physics. [doi:10.1063/1.3549181]