Phonon confinement and particle size effect on the low-frequency Raman mode of aurivillius phase Bi<sub>4</sub>Ti<sub>3</sub>O<sub>12</sub> powders
Ifeanyichukwu C. Amaechi, Andreas Ruëdiger, A. Pignolet
Abstract
law, respectively. Moreover, a single phonon coupling term corresponding to a three-phonon anharmonic process is sufficient to describe the phonon coupling decay culminating from the softening of this strongly overdamped phonon mode.
Topics & Concepts
AurivilliusRaman spectroscopyPhononMode (computer interface)Materials sciencePhase (matter)Particle sizeParticle (ecology)Condensed matter physicsPhysicsOpticsOptoelectronicsChemistryQuantum mechanicsPhysical chemistryComputer scienceGeologyDielectricOceanographyFerroelectricityOperating systemFerroelectric and Piezoelectric MaterialsMicrowave Dielectric Ceramics SynthesisAcoustic Wave Resonator Technologies