HfO₂ (Hafnium dioxide, Hafnia)

Glasses, oxides and dielectrics integrated-photonics

4 datasets, together covering 0.1148–500 µm. Default: Al-Kuhaili 2004: n 0.2–2.0 µm.

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Tick datasets in the list to add them to the plot (up to 12).

Datasets

Thin film

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith

import lightsmith as ls

# HfO2 (Hafnium dioxide, Hafnia): Al-Kuhaili 2004: n 0.2–2.0 µm
hfo2 = ls.fetch_refractiveindex("main", "HfO2", "Al-Kuhaili", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(hfo2.range_nm)  # (200, 2000) nm
eps = hfo2.eps([633])  # complex permittivity

Downloads the original record once (pinned to the imported snapshot) and caches it.

import json, urllib.request
import lightsmith as ls

url = "https://materials.lightsmith.dev/v1/datasets/ds_f562c901da87/lightsmith"
hfo2 = ls.Tabulated.model_validate(json.load(urllib.request.urlopen(url)))
print(hfo2.source)  # citation and provenance travel with the data

Any dataset here, as the library's Tabulated material (hfo2/al-kuhaili-2004).

# ... load hfo2 as above, then:
sim = ls.Simulation(
    particles=[ls.Particle(shape=ls.Sphere(radius_nm=50), material=hfo2)],
    medium_index=1.0,
    wavelengths=ls.WavelengthRange(start_nm=400, stop_nm=1000, num=81),
)
res = ls.solve(sim)  # exact Mie for a sphere
print(res.q_ext)     # extinction efficiency at each wavelength

Same spec runs with DDA, FDTD, BEM or T-matrix: ls.compare(sim, ["mie", "dda"]).

Materials guide Open a sphere of it in Studio Quick start Ask the community

Lightsmith is open source (MIT): Mie, T-matrix, BEM, DDA, FDTD, RCWA, TMM, mode solvers and inverse design behind one spec, on CPU or GPU. GitHub.

About HfO2 (Hafnium dioxide, Hafnia)

Hafnium dioxide (HfO₂) is a high-index, low-absorption material used extensively in optical applications. It is especially valuable for making thin-film dielectric coatings for mirrors, anti-reflective coatings, and beam splitters. Due to its excellent thermal stability and resistance to chemical corrosion, it is well-suited for harsh environments. Additionally, its high refractive index makes it an attractive material for planar waveguides and other integrated optics components. Beyond its optical uses, hafnium dioxide is also a key material in the fabrication of advanced gate dielectrics in field-effect transistors, contributing to the miniaturization and performance improvement of electronic devices.

Other names: Hafnium dioxide, Hafnia, Hafnium dioxide, Hafnia, Hafnium(IV) oxide, Hafnium oxide

API: /v1/materials/mat_7ed1f754735a · slug hfo2