Lithuanian Journal of Physics article / Lietuvos fizikos žurnalo straipsnis

CONTRIBUTION OF FERROELECTRIC AND NON-FERROELECTRIC FACTORS TO P–E HYSTERESIS LOOPS OF CuInP₂S₆-TYPE SINGLE CRYSTALS
Ilona Zamaraitė^a, Andrius Džiaugys^a, Yulian Vysochanskii^b, and Jūras Banys^a
^aFaculty of Physics, Vilnius University, Saulėtekio 9, 10222 Vilnius, Lithuania
^bInstitute of Solid State Physics and Chemistry, Uzhgorod University, 46 Pidgirna St., 88000 Uzhgorod, Ukraine
Email: ilona.zamaraite@ff.vu.lt

Received 18 October 2022; accepted 18 October 2022

A defining property of ferroelectricity is the switching between different states by the application of an electric field. Hysteresis loops serve like a fingerprint of ferroelectric materials giving some useful information. Sometimes the interpretation of information extracted from hysteresis measurements can be challenging due to the non-ferroelectric factors such as electrical conductivity, defect dipole presence and/or dielectric properties. In this paper, the ferroelectric and non-ferroelectric factors on P–E hysteresis loops were investigated in a CuInP₂S₆-type single crystal. The analysis of data obtained for this single crystal allowed extracting the reliable values in the materials with a low polarization and a high conductivity.
Keywords: ferroelectrics, dielectric spectroscopy, hysteresis

FEROELEKTRINIŲ IR NEFEROELEKTRINIŲ VEIKSNIŲ ĮTAKA CuInP₂S₆ TIPO MONOKRISTALŲ P–E HISTEREZĖS KILPOMS
Ilona Zamaraitė^a, Andrius Džiaugys^a, Yulian Vysochanskii^b, Jūras Banys^a

^aVilniaus universiteto Fizikos fakultetas, Vilnius, Lietuva
^bUžhorodo nacionalinio universiteto Kietojo kūno fizikos ir chemijos institutas, Užhorodas, Ukraina

Viena pagrindinių feroelektrinius kristalus apibūdinančių savybių yra perjungimas tarp skirtingų būsenų naudojant išorinį elektrinį lauką. Histerezės kilpos dažnai interpretuojamos kaip feroelektrinių medžiagų pirštų atspaudai, suteikiantys naudingos informacijos apie medžiagos savybes. Kartais informacija, gauta iš histerezės matavimų, gali būti sudėtingai interpretuojama dėl neferoelektrinių veiksnių, tokių kaip elektros laidumas, defektų dipolių buvimas ir (arba) dielektrinės savybės. Šiame darbe feroelektriniai ir neferoelektriniai veiksniai P–E histerezės kilpose buvo nagrinėjami CuInP₂(Se_0,98S_0,02)₆ monokristale.

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