Lamellar phase separation and dynamic competition in La 0.23Ca0.77MnO3

J. Tao, D. Niebieskikwiat, M. B. Salamon, J. M. Zuo

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

48 Citas (Scopus)


We report the coexistence of lamellar charge-ordered (CO) and charge-disordered (CD) domains, and their dynamical behavior, in La 0.23Ca0.77MnO3. Using high-resolution transmission electron microscopy (TEM), we show that below TCD ∼ 170 K a CD-monoclinic phase forms within the established CO-orthorhombic matrix. The CD phase has a sheetlike morphology, perpendicular to the q vector of the CO superlattice (a axis of the Pnma structure). For temperatures between 64 and 130 K, both the TEM and resistivity experiments show a dynamic competition between the two phases: at constant T, the CD phase slowly advances over the CO one. This slow dynamics appears to be linked to the magnetic transitions occurring in this compound, suggesting important magnetoelastic effects.

Idioma originalInglés
Número de artículo147206
PublicaciónPhysical Review Letters
EstadoPublicada - 15 abr. 2005
Publicado de forma externa


Profundice en los temas de investigación de 'Lamellar phase separation and dynamic competition in La 0.23Ca0.77MnO3'. En conjunto forman una huella única.

Citar esto