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Proceedings Paper

Mid- and far-infrared optical characterization of monoclinic HfO2 nanoparticles and evidence of localized surface phonon polaritons
Author(s): Owen Dominguez; Tracie L. McGinnity; Ryan K. Roeder; Anthony J. Hoffman
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Paper 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.

Paper Details

Date Published: 16 February 2017
PDF: 9 pages
Proc. SPIE 10100, Optical Components and Materials XIV, 101001G (16 February 2017); doi: 10.1117/12.2252844
Show Author Affiliations
Owen Dominguez, Univ. of Notre Dame (United States)
Tracie L. McGinnity, Univ. of Notre Dame (United States)
Ryan K. Roeder, Univ. of Notre Dame (United States)
Anthony J. Hoffman, Univ. of Notre Dame (United States)

Published in SPIE Proceedings Vol. 10100:
Optical Components and Materials XIV
Shibin Jiang; Michel J. F. Digonnet, Editor(s)

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