We present a combined experimental and theoretical analysis of the dielectric and vibrational properties of crystalline lutetium oxide in its ground-state bixbyite structure. The vibrational dielectric function of Lu2O3 thin films grown by atomic-layer deposition was studied by infrared transmission and reflection-absorption spectroscopies, selectively accessing transverse and longitudinal optical frequencies. The static dielectric constant is extracted analyzing the infrared response. We also present first-principles density-functional linear-response calculations, which are in close agreement with experiment, and provide insight into the microscopic nature of vibrational spectra and dielectric properties.
Bonera, E., Scarel, G., Fanciulli, M., Delugas, P., Fiorentini, V. (2005). Dielectric properties of high-kappa oxides: Theory and experiment for Lu-2O-3. PHYSICAL REVIEW LETTERS, 94(2) [10.1103/PhysRevLett.94.027602].
Dielectric properties of high-kappa oxides: Theory and experiment for Lu-2O-3
BONERA, EMILIANO;FANCIULLI, MARCO;
2005
Abstract
We present a combined experimental and theoretical analysis of the dielectric and vibrational properties of crystalline lutetium oxide in its ground-state bixbyite structure. The vibrational dielectric function of Lu2O3 thin films grown by atomic-layer deposition was studied by infrared transmission and reflection-absorption spectroscopies, selectively accessing transverse and longitudinal optical frequencies. The static dielectric constant is extracted analyzing the infrared response. We also present first-principles density-functional linear-response calculations, which are in close agreement with experiment, and provide insight into the microscopic nature of vibrational spectra and dielectric properties.
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