Cited by 28Microwave Dielectric Ceramics SynthesisMicrowave and Dielectric Measurement TechniquesFerroelectric and Piezoelectric Materials

Temperature Dependence of Permittivity and Loss Tangent of Lithium Tantalate at Microwave Frequencies

Jacob, M.V., Hartnett, J.G., Mazierska, J., Giordano, V., Krupka, J., Tobar, M.E.·2004·IEEE Transactions on Microwave Theory and Techniques

Abstract

Lithium tantalate (LiTaO/sub 3/) exhibits excellent electro-optical, piezoelectric, and pyroelectric properties and a very low thermal expansion. In this paper, we report measurements of loss tangent and the real part of the relative permittivity /spl epsiv//sub r/spl perp// measured in c-axis LiTaO/sub 3/ crystals in the temperature range from 14 K to 295 K at a frequency of 11.4 and 10 GHz. Microwave properties of LiTaO/sub 3/ were determined by measurements of the resonance frequency and the unloaded Q/sub o/ factor of a TE/sub 011/ mode cylindrical cavity containing the sample under test and accounting for uncalibrated cables and adaptors inside the cryocooler. The permittivity of LiTaO/sub 3/ was found to increase from 38.9 to 41.1 and the loss tangent to change from 1.1/spl times/10/sup -4/ to 6.5/spl times/10/sup -4/ over the full temperature range. Due to its low loss and relatively high permittivity, LiTaO/sub 3/ is suitable for microwave applications.

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Crossref · 10.1109/tmtt.2003.821911

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  • LiTaO3 has Pockels coefficient r33 = 30.5 pm/V, birefringence reduced by more than 10 times, higher optical destruction threshold, and 10-times-lower microwave losses compared to LN.

    “Although the Pockels coefficient is similar to that of LN (r33 = 30.5 pm/V), LT exhibits advantages such as: a birefringence reduced by more than 10 times (which suppresses mode mixing in the guides); a higher optical destruction threshold; and 10-times-lower microwave losses [187,188], essential for quantum transduction [189,190].”

    From Metal Oxide Thin Films for Advanced Photonic Applications (2026) · cites this paper as [188]

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Authors
Jacob, M. V., Hartnett, J. G., Mazierska, J., Giordano, V., Krupka, J., & Tobar, M. E.
Affiliations
  • James Cook University (AU)
  • The University of Western Australia (AU)
  • Massey University (NZ)
  • Centre National de la Recherche Scientifique (FR)
  • Warsaw University of Technology (PL)
Venue
IEEE Transactions on Microwave Theory and Techniques
Published
2004-02
Volume
52
Issue
2
Pages
536-541
ISSN
0018-9480 (ISSN-L)
OpenAlex
W2097653326
Cited by
27
References
18
Citations by year
2026: 7 · 2025: 2 · 2024: 5 · 2022: 1 · 2021: 1 · 2020: 3 · 2019: 1 · 2018: 1
FWCI
0.65
Type
journal article
Language
en
Open access
closed
Locations
  • IEEE Transactions on Microwave Theory and Techniques (publishedVersion)
  • UWA Profiles and Research Repository (UWA) (submittedVersion)
  • HAL (submittedVersion)
Topics
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Microwave Dielectric Ceramics Synthesis
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Microwave and Dielectric Measurement Techniques
  • Physical Sciences › Materials Science › Materials Chemistry › Ferroelectric and Piezoelectric Materials
Keywords
lithium tantalate, temperature dependence, dielectric constant, loss tangent, microwave dielectric properties, unloaded Q, low-loss dielectrics

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