Mid- and far-infrared optical characterization of monoclinic HfO2 nanoparticles and evidence of localized surface phonon polaritons

Owen Dominguez; Tracie L. McGinnity; Ryan K. Roeder; Anthony J. Hoffman

doi:10.1117/12.2252844

16 February 2017 Mid- and far-infrared optical characterization of monoclinic HfO₂ nanoparticles and evidence of localized surface phonon polaritons

Owen Dominguez, Tracie L. McGinnity, Ryan K. Roeder, Anthony J. Hoffman

Author Affiliations +

Proceedings Volume 10100, Optical Components and Materials XIV; 101001G (2017) https://doi.org/10.1117/12.2252844
Event: SPIE OPTO, 2017, San Francisco, California, United States

Abstract

Monoclinic HfO₂ nanoparticles (9 - 45 nm) are synthesized using a sol-gel method and optically characterized using transmission- and angle-dependent reflection spectroscopy in the mid- to far-infrared. A detailed HfO₂ identification of the infrared-active phonon modes is presented; consistent with previously reported thin film values, and in excellent agreement with density functional perturbation theory calculations. An anomaly is observed in both reflection and transmission measurements, at 556 cm^-1 that is not attributed to the optical phonon modes. Numerical models indicate that this measured anomaly is in the spectral region of a localized surface phonon polariton mode. The results of this work suggest that HfO₂ nanoparticles could enable new mid- and far-infrared materials and devices with engineered optical properties.

Citation Download Citation

Owen Dominguez, Tracie L. McGinnity, Ryan K. Roeder, and Anthony J. Hoffman "Mid- and far-infrared optical characterization of monoclinic HfO₂ nanoparticles and evidence of localized surface phonon polaritons", Proc. SPIE 10100, Optical Components and Materials XIV, 101001G (16 February 2017); https://doi.org/10.1117/12.2252844

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