An anomalous narrowing of the T2g phonon linewidth in ceria at 1023-1123 K is reported and attributed to temperature-induced phonon renormalization shrinking the three-phonon scattering phase space.
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Lattice anharmonicity effects in fluorite oxide single crystals and anomalous increase in phonon lifetime in ceria at elevated temperature
An anomalous narrowing of the T2g phonon linewidth in ceria at 1023-1123 K is reported and attributed to temperature-induced phonon renormalization shrinking the three-phonon scattering phase space.