Working Paper Article Version 2 This version is not peer-reviewed

Temperature-Modulated Pyroelectricity Measurements of a Thin Ferroelectric Crystal With in-Plane Polarization and the Thermal Analysis Based on One-Dimensional Layer Models

Version 1 : Received: 6 June 2021 / Approved: 7 June 2021 / Online: 7 June 2021 (14:54:05 CEST)
Version 2 : Received: 29 July 2021 / Approved: 30 July 2021 / Online: 30 July 2021 (09:22:29 CEST)

A peer-reviewed article of this Preprint also exists.

Yamamoto, K.; Kawasaki, A.; Chinen, T.; Ryugo, K. Temperature-Modulated Pyroelectricity Measurements of a Thin Ferroelectric Crystal with In-Plane Polarization and the Thermal Analysis Based on One-Dimensional Layer Models. Crystals 2021, 11, 880. Yamamoto, K.; Kawasaki, A.; Chinen, T.; Ryugo, K. Temperature-Modulated Pyroelectricity Measurements of a Thin Ferroelectric Crystal with In-Plane Polarization and the Thermal Analysis Based on One-Dimensional Layer Models. Crystals 2021, 11, 880.

Journal reference: Crystals 2021, 11, 880
DOI: 10.3390/cryst11080880

Abstract

A temperature-modulated pyroelectricity measurement system for a small single crystal is developed and applied to standard sample measurements performed on a thin single crystal of lithium niobate. The modulation measurement is based on the AC technique, in which the temperature of the sample is periodically oscillated, and the synchronized pyroelectric signal is extracted using a lock-in amplifier. Temperature modulation is applied by irradiating periodic light on the sample placed in the heat exchange gas. To apply this technique to the transparent reference sample, a commercially available black resin is coated on the sample’s surface to absorb the light energy and transmits it to the specimen. The experimental results are analyzed using a two-layer heat transfer model to verify the effect of the light-absorbing layer as well as the non-contact temperature modulation system.

Keywords

pyroelectricity; temperature modulation; molecular ferroelectrics; non-contact measurement; thermal diffusion model; lithium niobate

Comments (1)

Comment 1
Received: 30 July 2021
Commenter: Kaoru Yamamoto
Commenter's Conflict of Interests: Author
Comment: The descriptions about the uncertainty of the experimental data and the estimated pyroelectric coefficient have been corrected.
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