Title:
BIFEO3-BI0.5NA0.5TIO3-BASED CERAMIC SOLID SOLUTION HAVING MAGNETOELECTRIC COUPLING, PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2022/127067
Kind Code:
A1
Abstract:
Disclosed are a BiFeO3-Bi0.5Na0.5TiO3-based ceramic solid solution having room temperature magnetoelectric coupling, a preparation method therefor and an application thereof. The chemical composition of the ceramic solid solution is (1.0-x-y)BiFeO3-xBi0.5Na0.5TiO3-yCaTiO3, wherein x=0-0.3 and y=0-0.4. The preparation method comprises: (1) accurately weighing a bismuth source, an iron source, a sodium source, a titanium source and a calcium source according to the stoichiometric ratio of (1.0-x-y)BiFeO3-xBi0.5Na0.5TiO3-yCaTiO3; (2) adding a raw material to a mixed solution of glacial acetic acid, acetylacetone, a complexing agent and ethanolamine, and stirring same to obtain a clear sol; (3) first drying the sol, and then pre-sintering same to obtain a precursor powder; (4) grinding the precursor powder and then pressing same to obtain a ceramic sheet; and (5) sintering the ceramic sheet for a second time, and quenching same after sintering so as to obtain a BiFeO3-Bi0.5Na0.5TiO3-based ceramic solid solution having room temperature magnetoelectric coupling. The BiFeO3-Bi0.5Na0.5TiO3-based ceramic solid solution having room temperature magnetoelectric coupling provided in the present invention has a stable structure and excellent electrical properties, magnetic properties and magnetoelectric coupling properties, and may be applied in a sensor or a memory; in addition, the preparation method of the present invention is simple.
Inventors:
HUANG WEN JUAN (CN)
Application Number:
PCT/CN2021/102615
Publication Date:
June 23, 2022
Filing Date:
June 28, 2021
Export Citation:
Assignee:
CHANGZHOU INST TECHNOLOGY (CN)
International Classes:
C04B35/475; C04B35/26; H01F1/01; H01F41/02
Foreign References:
| CN101941838A | 2011-01-12 | |||
| CN107112412A | 2017-08-29 | |||
| US20110007115A1 | 2011-01-13 |
Other References:
W.J.HUANG ET AL.: "Room-temperature multiferrocity and magnetodielectric properties of ternary BiFeO3–Bi0.5Na0.5TiO3–CaTiO3 ceramics across the rhombohedral–orthorhombic phase boundary", JOURNAL OF MATERIALS SCIENCE: MATERIALS IN ELECTRONICS, vol. 32, no. 9, 10 April 2021 (2021-04-10), XP037454136, ISSN: 1573-482X, DOI: 10.1007/s10854-021-05729-5
CHAKRABARTI CHIRANJIB; FU QINGSHAN; PAUL BIPLAB KUMAR; CHEN XINGHAN; ZHENG JIA; YIN HONGXIA; ALI WAJAHAT; QIU YANG; ROY PRADIP KUM: "Ferromagnetic, dielectric, and ferroelectric characteristic near the morphotropic phase boundary in (1-x)(0.7BiFeO3-0.3BiNa0.5Ti O3)-x(CaTiO3) solid solution", CERAMICS INTERNATIONAL, vol. 47, no. 14, 8 April 2021 (2021-04-08), NL , pages 20268 - 20275, XP086636378, ISSN: 0272-8842, DOI: 10.1016/j.ceramint.2021.04.035
HUANG WENJUAN: "Multiferroic and Magntodielectric Studies of BiFeO3-based Solid Solutions", CHINESE DOCTORAL DISSERTATIONS FULL-TEXT DATABASE, UNIVERSITY OF CHINESE ACADEMY OF SCIENCES, CN, 15 October 2018 (2018-10-15), CN , XP055943074, ISSN: 1674-022X
KUMAR PAWAN; KAR MANORANJAN: "Effect of structural transition on magnetic and optical properties of Ca and Ti co-substituted BiFeO3ceramics", JOURNAL OF ALLOYS AND COMPOUNDS, ELSEVIER SEQUOIA, LAUSANNE., CH, vol. 584, 24 September 2013 (2013-09-24), CH , pages 566 - 572, XP028761968, ISSN: 0925-8388, DOI: 10.1016/j.jallcom.2013.09.107
CHAKRABARTI CHIRANJIB; FU QINGSHAN; PAUL BIPLAB KUMAR; CHEN XINGHAN; ZHENG JIA; YIN HONGXIA; ALI WAJAHAT; QIU YANG; ROY PRADIP KUM: "Ferromagnetic, dielectric, and ferroelectric characteristic near the morphotropic phase boundary in (1-x)(0.7BiFeO3-0.3BiNa0.5Ti O3)-x(CaTiO3) solid solution", CERAMICS INTERNATIONAL, vol. 47, no. 14, 8 April 2021 (2021-04-08), NL , pages 20268 - 20275, XP086636378, ISSN: 0272-8842, DOI: 10.1016/j.ceramint.2021.04.035
HUANG WENJUAN: "Multiferroic and Magntodielectric Studies of BiFeO3-based Solid Solutions", CHINESE DOCTORAL DISSERTATIONS FULL-TEXT DATABASE, UNIVERSITY OF CHINESE ACADEMY OF SCIENCES, CN, 15 October 2018 (2018-10-15), CN , XP055943074, ISSN: 1674-022X
KUMAR PAWAN; KAR MANORANJAN: "Effect of structural transition on magnetic and optical properties of Ca and Ti co-substituted BiFeO3ceramics", JOURNAL OF ALLOYS AND COMPOUNDS, ELSEVIER SEQUOIA, LAUSANNE., CH, vol. 584, 24 September 2013 (2013-09-24), CH , pages 566 - 572, XP028761968, ISSN: 0925-8388, DOI: 10.1016/j.jallcom.2013.09.107
Download PDF: