Infrared phonon spectroscopy of a compressively strained (001) SrTiO(3)film grown on a (110) NdGaO(3) substrate

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F11%3A10103818" target="_blank" >RIV/00216208:11320/11:10103818 - isvavai.cz</a>
Alternative codes found
RIV/68378271:_____/11:00359327
Result on the web
<a href="http://iopscience.iop.org/0953-8984/23/4/045901/" target="_blank" >http://iopscience.iop.org/0953-8984/23/4/045901/</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/0953-8984/23/4/045901" target="_blank" >10.1088/0953-8984/23/4/045901</a>

Result language
angličtina
Original language name
Infrared phonon spectroscopy of a compressively strained (001) SrTiO(3)film grown on a (110) NdGaO(3) substrate
Original language description
Polarized infrared reflectivity was measured between 5 and 300 K on a 17 nm thick, 1.1% compressively strained epitaxial (001) SrTiO(3) film and the orthorhombic (110) NdGaO(3) substrate upon which it was grown. A strong in-plane infrared anisotropy of the NdGaO(3) substrate was observed and polar modes with B(1u)-and a mixture of B(2u) + B(3u)-symmetry were seen. At low temperatures three new modes arose in the 90-130 cm(-1) range, which we assigned to 4f Nd electronic transitions. The in-plane SrTiO(3) film phonons showed strong stiffening compared to the phonon frequencies of bulk unstrained SrTiO(3), particularly the soft mode, and the in-plane phonon peaks were found to split. No anomalies were detected as a function of temperature in either the infrared response or lattice parameters of the compressively strained SrTiO(3) film, providing an absence of evidence for the out-of-plane ferroelectric phase transition predicted by theory.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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