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Synthesis, structure, and magnetic and dielectric properties of magnetoelectric BaDyFeO4 ferrite
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| Title: | Synthesis, structure, and magnetic and dielectric properties of magnetoelectric BaDyFeO4 ferrite |
| Authors: | Belik, Alexei A. Browse this author | | Terada, Noriki Browse this author | | Katsuya, Yoshio Browse this author | | Tanaka, Masahiko Browse this author | | Glazkova, Iana S. Browse this author | | Sobolev, Alexey V. Browse this author | | Presniakov, Igor A. Browse this author | | Yamaura, Kazunari Browse this author →KAKEN DB |
| Keywords: | Ferrites | | Magnetodielectric effect | | Multiferroics | | Crystal structure |
| Issue Date: | 30-Nov-2019 |
| Publisher: | Elsevier |
| Journal Title: | Journal of alloys and compounds |
| Volume: | 811 |
| Start Page: | UNSP 151963 |
| Publisher DOI: | 10.1016/j.jallcom.2019.151963 |
| Abstract: | BaDyFeO4 was prepared by a conventional solid-state method in air at 1573 K. It crystallizes in space group Pnma (No. 62) with a = 13.16861(1) angstrom, b = 5.70950(1) angstrom, and c = 10.26783(1) angstrom, and it is isostructural with BaYFe0 4 . Three magnetic transitions were found in BaDyFeO4 at T-N3 = 9 K, T-N2 = 23 K, and T-N1 =47 K in zero magnetic field in comparison with two magnetic transitions observed in BaYFeO4. Magnetic-field-induced transitions were also detected in BaDyFeO4 at 18 and 28 kOe (at T= 1.8 K). Frequency-dependent broad dielectric peaks were observed in BaDyFeO4 spanning between T-N2 and T-N and centred at 35 K - this temperature does not coincide with any T-N. No dielectric anomalies were found at T-N1 and T-N3, while very weak frequency-independent dielectric anomalies were detected at T-N2. Positive and negative magnetodielectric effects were measured in BaDyFeO4 (within a range of -0.8 and + 0.4% up to 90 kOe) reflecting magnetic-field dependence of dielectric constant. Pyroelectric current measurements did not detect any ferroelectricity in BaDyFeO4 under measurement conditions used. No dielectric anomalies and no magnetodielectric effects were found in BaYFeO4. (C) 2019 Elsevier B.V. All rights reserved. |
| Rights: | https://www.elsevier.com/journals/journal-of-alloys-and-compounds/0925-8388/guide-for-authors#13300 | | https://creativecommons.org/licenses/by-nc-nd/4.0/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/83352 |
| Appears in Collections: | 総合化学院 (Graduate School of Chemical Sciences and Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 山浦 一成
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