Macroscopic lamellar heterophase pattern in Pb(Mg.sub.1/3./sub.Nb.sub.2/3./sub.)O.sub.3./sub.-PbTiO.sub.3./sub. single crystals

0458927 - FZÚ 2017 RIV US eng J - Článek v odborném periodiku
Rafalovskyi, Iegor - Guennou, Mael - Gregora, Ivan - Hlinka, Jiří
Macroscopic lamellar heterophase pattern in Pb(Mg_1/3Nb_2/3)O₃-PbTiO₃ single crystals.
Physical Review. B. Roč. 93, č. 6 (2016), 1-7, č. článku 064110. ISSN 1098-0121
Grant CEP: GA ČR GA15-04121S; GA ČR GAP204/10/0616
Institucionální podpora: RVO:68378271
Klíčová slova: PMN-PT * Raman scattering
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 3.736, rok: 2014

The paper describes lamellar heterostructures, observed in (1 − x)Pb(Mg1/3Nb2/3)O3-xPbTiO3 (PMN-xPT) single crystals with x = 0.32. These lamellas are naturally formed in single crystals cooled under bias electric field applied along [001]pc and then zero-field heated to the vicinity of the so-called depoling temperature TRT, but similar structures were also encountered at ambient conditions. The polarization dependence of the Raman scattering intensities was employed to demonstrate that these lamellar structures are composed of tetragonal-like and rhombohedral-like layers extending over macroscopic (mm) lengths. The properties and interest of these macroscopic heterophase interfaces are discussed.
Trvalý link: http://hdl.handle.net/11104/0259138