| Zugriffsnummer | 21847 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Pressure-induced phase transition in PbSc0.5Ta0.5O3 as a model Pb-based Perovksite-type relaxor ferroelectric |
| Autor(in); Institution |
Mihailova, B.; Universität Hamburg, Mineralogisch-Petrographisches Institut, Hamburg, GERMANY
Angel, R. J.; Virginia Tech Crystallography Laboratory, Department of Geosciences, Virginia Tech, Blacksburg, Virginia, USA
Welsch, A.-M.; Universität Hamburg, Mineralogisch-Petrographisches Institut, Hamburg, GERMANY
Zhao, J.; Virginia Tech Crystallography Laboratory, Department of Geosciences, Virginia Tech, Blacksburg, Virginia, USA
Engel, J.; Virginia Tech Crystallography Laboratory, Department of Geosciences, Virginia Tech, Blacksburg, Virginia, USA
Paulmann, C.; Universität Hamburg, Mineralogisch-Petrographisches Institut, Hamburg, GERMANY
Gospodinov, M.; Bulgarian Academy of Sciences, Institute of Solid State Physics, Sofia, BULGARIA
Ahsbahs, H.; Universität Marburg, Institut für Mineralogie, Petrologie und Kristallographie, Marburg, GERMANY
Stosch, Rainer; 3.1, Metrologie in der Chemie, PTB-Braunschweig
Güttler, Bernd; 3.1, Metrologie in der Chemie, PTB-Braunschweig
Bismayer, U.; Universität Hamburg, Mineralogisch-Petrographisches Institut, Hamburg, GERMANY
|
| Quelle/Jahr | Physical Review Letters: 101 (2008), 017602-1 - 017602-4 |
| ISSN | 0031-9007 |
| DOI | |
| URL | |
| Verlag | Ridge, NY: The American Physical Society |
| Klassifikationscode | PACS: 77.84.Dy ; PACS: 61.50.Ks ; PACS: 61.72.Dd ; PACS: 77.80.-e |
| Zusammenfassung | We report pressure-induced structural changes in PbSc0.5Ta0.5O3 studied by single-crystal x-ray diffraction and Raman scattering. The appearance of a soft mode, a change in the volume compressibility, broadening of the diffraction peaks, and suppression of the x-ray diffuse scattering show that a phase transition occurs near pc ≈ 1.9 GPa. The critical pressure is associated with a decoupling of the displacements of the B site and Pb cations in the existing polar nanoregions, leading to the suppression of B-cation off-center shifts and enhancement of the ferroic distortion in the Pb-O system. |
Zitierung
Mihailova, B., Angel, R. J., Welsch, A.-M., Zhao, J., Engel, J., Paulmann, C., Gospodinov, M., Ahsbahs, H., Stosch, R., Güttler, B., & Bismayer, U. (2008). Pressure-induced phase transition in PbSc0.5Ta0.5O3 as a model Pb-based Perovksite-type relaxor ferroelectric. Physical Review Letters, 101, 017602-1–017602-4. https://doi.org/10.1103/physrevlett.101.017602