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Structural, magnetic, electrical and optical properties of Aurivillius phase Bi6Fe1.5Co0.5Ti3-xWxO18 (0=x=0.07) ceramics | |
Zuo, Xuzhong1; He, Enjie1; Qin, Yanfu1; Guan, Banggui1; Zhao, Gaochao2; Wu, Jie2; Hui, Zhenzhen3; Yang, Jie2 ; Zhu, Xuebin2; Dai, Jianming2
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| 2022-06-15 | |
| Source Publication | JOURNAL OF ALLOYS AND COMPOUNDS
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| ISSN | 0925-8388 |
| Corresponding Author | Zuo, Xuzhong(zxz1003@mail.ustc.edu.cn) |
| Abstract | In this paper, we investigated the structural, multiferroic, dielectric and optical properties of Aurivillius Bi6Fe1.5Co0.5Ti3-xWxO18 (0 <= x <= 0.07) ceramics. The doping of W6+ ions promoted the grain's growth and induced c-axis orientation. The remnant magnetization Mr monotonously decreased from 0.49 to 0.13 emu/ g with increasing the doping level from 0 to 0.07, which was primarily attributed to the reduced Fe2+-O-Fe3+ exchange and the improved orientation growth. The remnant polarization Pr increased from 4.5/4C/cm(2) for x = 0-8.3/4C/cm(2) for x = 0.05 and then decreased to 7.2/4C/cm(2) for x = 0.07, the enhanced ferroelectricity was mainly related to the suppressed oxygen vacancy and larger grain size, while the weakened ferroelectricity was ascribed to the improved c-axis orientation. The Mr (0.23 emu/g) along c axis was larger 0.13 emu/g in ab plane while the Pr (7.2/4C/cm(2)) along c axis was smaller than 9.3/4C/cm(2) in ab plane in x = 0.07, which demonstrated the anistropy of multiferroicity. In addition, all samples exhibited two different dielectric relaxations. The first one with activation energy ranging from 0.47 to 0.53 eV was assigned to the hopping process of electron, while the second one with activation energy varied from 1.45 to 3.63 eV was associated with the viscous motion of ferroelectric domain walls. Two direct absorption edges were demonstrated by Tauc's law in all samples. The band gap 1 increased from 1.93 to 1.95 eV due to the lower t2 g state of Fe2+. The band gap 2 varied between 2.21 and 2.28 eV, which was proposed to the competition between TiO6 distortion and Ti4+ content. These results indicate that doping donor W6+ in Aurivillius compounds is a feasible way to regulate the multiferroic and optical properties. (C)& nbsp;2022 Elsevier B.V. All rights reserved. |
| Keyword | Oriented growth Multiferroic anisotropy Dielectric relaxation Optical bandgap |
| DOI | 10.1016/j.jallcom.2022.164393 |
| WOS Keyword | THIN-FILMS ; INTERNAL-FRICTION ; ROOM-TEMPERATURE ; DIELECTRIC LOSS ; DOMAIN-WALLS ; BANDGAP ; MULTIFERROICITY ; POLARIZATION ; DEGRADATION ; IMPEDANCE |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51702002] ; Natural Science Foundation of Anhui Province[2108085ME150] ; Talent Introduction Project of Anhui Science and Technology University[DQYJ201703] ; Anhui Young Scholars Project[000012] |
| Funding Organization | National Natural Science Foundation of China ; Natural Science Foundation of Anhui Province ; Talent Introduction Project of Anhui Science and Technology University ; Anhui Young Scholars Project |
| WOS Research Area | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000779903100003 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.hfcas.ac.cn:8080/handle/334002/128476 |
| Collection | 中国科学院合肥物质科学研究院 |
| Corresponding Author | Zuo, Xuzhong |
| Affiliation | 1.Anhui Sci & Technol Univ, Coll Elect & Elect Engn, Bengbu 233030, Peoples R China 2.Univ Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China 3.Anhui Sci & Technol Univ, Coll Chem & Mat Engn, Bengbu 233030, Peoples R China |
| Recommended Citation GB/T 7714 |
Zuo, Xuzhong,He, Enjie,Qin, Yanfu,et al. Structural, magnetic, electrical and optical properties of Aurivillius phase Bi6Fe1.5Co0.5Ti3-xWxO18 (0=x=0.07) ceramics [J]. JOURNAL OF ALLOYS AND COMPOUNDS,2022,906. |
| APA |
Zuo, Xuzhong.,He, Enjie.,Qin, Yanfu.,Guan, Banggui.,Zhao, Gaochao.,...&Dai, Jianming.(2022). Structural, magnetic, electrical and optical properties of Aurivillius phase Bi6Fe1.5Co0.5Ti3-xWxO18 (0=x=0.07) ceramics .JOURNAL OF ALLOYS AND COMPOUNDS,906. |
| MLA |
Zuo, Xuzhong,et al." Structural, magnetic, electrical and optical properties of Aurivillius phase Bi6Fe1.5Co0.5Ti3-xWxO18 (0=x=0.07) ceramics ".JOURNAL OF ALLOYS AND COMPOUNDS 906(2022). |
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