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Influence of iridium (Ir) doping on the structural, electrical, and dielectric properties of LuFeO3 perovskite compound
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SYSNO ASEP 0543763 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Influence of iridium (Ir) doping on the structural, electrical, and dielectric properties of LuFeO3 perovskite compound Author(s) Polat, O. (CZ)
Coskun, M. (TR)
Roupcová, Pavla (UFM-A) RID, ORCID
Sobola, D. (CZ)
Durmus, Z. (DE)
Caglar, M. (TR)
Šikola, T. (CZ)
Turut, A. (TR)Number of authors 8 Article number 160282 Source Title Journal of Alloys and Compounds. - : Elsevier - ISSN 0925-8388
Roč. 877, OCT (2021)Number of pages 14 s. Language eng - English Country CH - Switzerland Keywords ac conductivity ; relaxation ; modulus ; frequency ; Solid-state reaction ; Orthorhombic LuFeO3, Ir doping ; Dielectric properties ; Conductivity Subject RIV JG - Metallurgy OECD category Materials engineering Method of publishing Limited access Institutional support UFM-A - RVO:68081723 UT WOS 000660433800005 EID SCOPUS 85105712965 DOI 10.1016/j.jallcom.2021.160282 Annotation Rare-earth ferrites have been intensively investigated owing to their magnetic, electrical, and optical features in the literature. The present quest goals to examine the electrical properties of LuFeO3 (LFO) and LuFe1-xIrxO3 (LFIO) ceramics with different mol%, x = 0.05 and 0.10. X-ray diffractometer (XRD) method was utilized to identify the crystal nature of the obtained powders. The scanning electron microscope (SEM) was exploited to examine the surface topography of the fabricated pellets. X-ray photoelectron spectroscopy (XPS) was employed to find out the valence states of lutetium (Lu) (data is not presented here), iron (Fe), and iridium (Ir). Electrical modulus, dielectric constant, and conductivity of LFO and LFIO ceramics were detailed by dielectric/impedance spectroscopy measurements, which were performed at between 100 degrees C (173 K) up to 100 degrees C (373 K) with 20 degrees C temperature step. It was exhibited that the undoped LFO has a higher dielectric constant and conductivity than the Ir doped samples. Such a decrement in both dielectric constants and conductivity was related to i) reduction in the ratio of Fe2+ ions and ii) defects and/or distortion in the LFO structure due to Ir substitution. (C) 2021 Elsevier B.V. All rights reserved. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2022 Electronic address https://reader.elsevier.com/reader/sd/pii/S0925838821016911?token=A48DB5CB7ED696AE6B1490A87B29465551BD63F16BD5AB2BB1F261A98C1C7EE9D2FE87F017938A9CA0F1D42CC8AFE55F&originRegion=eu-west-1&originCreation=20210713132815
Number of the records: 1