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Identification of Barium-Site Substitution of BiFeO3-Bi0.5K0.5TiO3 Multiferroic Ceramics: X-ray Absorption Near Edge Spectroscopy

Prasatkhetragarn, A, Jutimoosik, J, Jantaratan, P, Kidkhunthod, P, Yimnirun, R, Ren, J and Ren, X (2019) Identification of Barium-Site Substitution of BiFeO3-Bi0.5K0.5TiO3 Multiferroic Ceramics: X-ray Absorption Near Edge Spectroscopy. Radiation Physics and Chemistry, 170. ISSN 0969-806X

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Abstract

In this work, the effects of barium substitution on the local structure, dielectric and magnetic properties of the polycrystalline ceramics 0.6BiFeO3–0.4(Bi0.5K0.5)TiO3 (0.6BFO–0.4BKT) system was investigated. A solid-state reaction technique was used to synthesize the materials with barium (Ba) doping of 1, 3, 5, 7, and 10 mol%. XRD analysis reveals the coexistence between tetragonal and rhombohedral phases of single-phase perovskite in pure 0.6BFO–0.4BKT and the rhombohedral reach phase was found with increasing Ba content. XANES simulations indicate that the majority of Ba atoms occupy A-site in BKT lattice of Ba-doped 0.6BFO-0.4BKT, the oxidation state of Fe, Ti, and Ba ions are +3, +4 and +2, respectively. At 5 mol% of Ba doping content, the dielectric measurement shows the morphotropic phase boundary (MPB) and the maximum value of ferromagnetic characteristic were observed, indicating an optimum composition, properties and production conditions.

Item Type: Article
Subjects: T Technology > TP Chemical technology
Divisions: Maritime & Mechanical Engineering
Publisher: Elsevier
Date Deposited: 20 Jan 2020 10:41
Last Modified: 20 Jan 2020 10:45
DOI or Identification number: 10.1016/j.radphyschem.2019.108621
URI: http://researchonline.ljmu.ac.uk/id/eprint/12048

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