Simple 4-segment thermal cycling pyroelectric measurement protocol for differentiating between ferroelectric and non-ferroelectric materials

Wagh, AA and Bhat, SG and Anusree, VK and Santhosh, PN and Elizabeth, S and Kumar, PSA (2023) Simple 4-segment thermal cycling pyroelectric measurement protocol for differentiating between ferroelectric and non-ferroelectric materials. In: Current Applied Physics, 49 . pp. 55-63.

PDF cur_app_phy_49_55-63_2023.pdf - Published Version Restricted to Registered users only Download (2MB) | Request a copy

Abstract

The rare-earth chromates, RECrO3 and manganites REMnO3 (RE = Eu, Y, Dy, Ho, Gd) are considered potential room temperature multiferroics. However, artefacts and undesirable signals pose a severe challenge in confirming the ferroelectric (FE) phase, especially in pyroelectric current measurement technique. We propose a simple modified approach to the technique, named as 4-segment thermal cycling protocol. This protocol assists in isolating the irreversible thermally stimulated current from those associated with spontaneous and reversible nature of the electric polarization in FE phase. Here, we have compared simulated response of two hypothetical materials; an FE material and a paraelectric material. Further, we experimentally verify the protocol in a single crystal of prototype FE material, Glycine Phosphite. Using the proposed protocol, we investigated polycrystalline materials, HoCrO3 (reported multiferroic earlier) and DyFe0.5Mn0.5O3. Our results expound on the absence of reversible spontaneous electric polarization in temperature ranges tested.

Item Type:	Journal Article
Publication:	Current Applied Physics
Publisher:	Elsevier B.V.
Additional Information:	The copyright for this article belongs to Elsevier B.V.
Keywords:	Amino acids; Chromates; Dysprosium compounds; Ferroelectric materials; Ferroelectricity; Manganites; Polarization; Polycrystalline materials; Single crystals; Thermal cycling, Electric polarization; Ferroelectric phasis; Ferroelectrics materials; Insulator; Magnetically ordered material; Multiferroics; Pyroelectric measurements; Rare-earth alloys and compounds; Simple++; Thermal-cycling, Rare earths
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	15 Mar 2023 10:35
Last Modified:	15 Mar 2023 10:35
URI:	https://eprints.iisc.ac.in/id/eprint/80966

Actions (login required)

View Item