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| Preparation and properties of Sr(CrMnFeCoNi)(3)O-4 and Sr (MgAlTiCrFe)(12)O-19 high entropy strontium ferrite systems and valance state analysis | |
| Gan, Ke1,2; Cai, Chao1,3; Zong, Chengwu4; Duan, Dongping1,3; Yang, Jinlong2 | |
| 2022-08-15 | |
| Source Publication | CERAMICS INTERNATIONAL
 |
| ISSN | 0272-8842 |
| Volume | 48Issue:16Pages:23963-23974 |
| Abstract | Two high-entropy ferrite ceramic systems, Sr(CrMnFeCoNi)(12)O-19 and Sr(MgAlTiCrFe)(12)O-19, were designed according to AB(12)O(19) composition and synthesised using elevated-temperature solid phase reaction. The B-site was loaded with five atoms in equal proportions. We focused on preparing high-entropy hexagonal magnetoplumbite strontium ferrites. However, spinel structure significantly formed in the Sr(CrMnFeCoNi)(12)O-19 system. The extruded strontium outside the lattice pulled out a part of chromium, causing phase separation and element segregation. The strontium extrusion outside the lattice and non-formation of hexagonal ferrite, which was reported for the first time, could be attributed to the electrovalence change in the elements. First-principles calculation of the (CrMnFeCoNi)(3)O-4 spinel system was used to analyse the band structure and density state. After entropy engineering design, it was mutated into a wide direct band gap (2.3 eV at 0 K). Although the nonmagnetic elements reduced the magnetic performance, they significantly improved the mechanical performance with a flexural strength of 208.7 +/- 0.9 MPa. These results may contribute to the element selection and preparation of high-entropy strontium ferrites. |
| Keyword | High-entropy oxides Ferrites Spinel Hexagonal Element electrovalence change |
| DOI | 10.1016/j.ceramint.2022.05.071 |
| Language | 英语 |
| WOS Keyword | MECHANICAL-PROPERTIES ; PHASE-STABILITY ; RARE-EARTH ; PSEUDOPOTENTIALS |
| Funding Project | Beijing Natural Science Foundation[2214081] ; State Key Laboratory of New Ceramic and Fine Processing[KF202008] |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Ceramics |
| Funding Organization | Beijing Natural Science Foundation ; State Key Laboratory of New Ceramic and Fine Processing |
| WOS ID | WOS:000881228700002 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/55519 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Gan, Ke; Duan, Dongping |
| Affiliation | 1.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China 3.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China 4.Guangzhou Univ, Sch Fine Art & Artist Design, Guangzhou 510006, Peoples R China |
| Recommended Citation GB/T 7714 | Gan, Ke,Cai, Chao,Zong, Chengwu,et al. Preparation and properties of Sr(CrMnFeCoNi)(3)O-4 and Sr (MgAlTiCrFe)(12)O-19 high entropy strontium ferrite systems and valance state analysis[J]. CERAMICS INTERNATIONAL,2022,48(16):23963-23974. |
| APA | Gan, Ke,Cai, Chao,Zong, Chengwu,Duan, Dongping,&Yang, Jinlong.(2022).Preparation and properties of Sr(CrMnFeCoNi)(3)O-4 and Sr (MgAlTiCrFe)(12)O-19 high entropy strontium ferrite systems and valance state analysis.CERAMICS INTERNATIONAL,48(16),23963-23974. |
| MLA | Gan, Ke,et al."Preparation and properties of Sr(CrMnFeCoNi)(3)O-4 and Sr (MgAlTiCrFe)(12)O-19 high entropy strontium ferrite systems and valance state analysis".CERAMICS INTERNATIONAL 48.16(2022):23963-23974. |
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