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Single-Crystal Growth and Room-Temperature Magnetocaloric Effect of X-Type Hexaferrite Sr2Co2Fe28O46
Wu, MX; Zhou, X; Croft, M; Ehrlich, S; Khalid, S; Wen, W; Lapidus, SH; Xu, XH; Li, MR; Liu, ZW; Cheong, SW
2020
Source PublicationINORGANIC CHEMISTRY
ISSN0020-1669
Volume59Issue:10Pages:6755-6762
Subtype期刊论文
AbstractX-type hexaferrites have been receiving considerable attention due to their promising applications in many magnetic-electronic fields. However, the growth of single-crystal X-type hexaferrite is still a challenge. Herein we reported, for the first time, the preparation of single crystal X-type hexaferrite Sr2Co2Fe28O46 (Sr2Co2X) with high-quality and large size using floating-zone method with laser as the heating source. The crystals show rhombohedral symmetry with space group of R-3m (No. 166, a = 5.8935(1) angstrom and c = 83.7438(17) angstrom). Co2+ and Fe3+ oxidation states were confirmed by the X-ray absorption near-edge spectroscopy. The prepared Sr2Co2X exhibits a spin reorientation transition from easy-cone to easy-axis at T-2 of 343 K and a ferrimagnetism-paramagnetism transition at Curie temperature (T-C) of similar to 743 K. The spin reorientation transition was accompanied by magnetocaloric effect (MCE). Both conventional and inverse MCEs were observed near T-2 with a magnetic field applied along the c-axis. The maximum value of the magnetic entropy change along the c-axis was evaluated to be 1.1 J/kg.K for a magnetic field change of 5 T.
KeywordMICROWAVE ABSORBING PROPERTIES ANISOTROPY FERRITES SPECTRA
DOI10.1021/acs.inorgchem.9b03724
Indexed BySCI ; EI
Language英语
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Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/33141
Collection中科院上海应用物理研究所2011-2020年
Affiliation1.Sun Yat Sen Univ, Minist Educ, Sch Chem, Key Lab Bioinorgan & Synthet Chem, Guangzhou 510275, Guangdong, Peoples R China
2.South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510640, Peoples R China
3.Rutgers State Univ, Rutgers Ctr Emergent Mat, Piscataway, NJ 08854 USA
4.Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA
5.Guangxi Univ Sci & Technol, Res Ctr Mat Sci & Engn, Liuzhou 545006, Peoples R China
6.Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA
7.Brookhaven Natl Lab, NSLS II, Upton, NY 11973 USA
8.Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China
9.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
10.Argonne Natl Lab, Xray Sci Div, Adv Photon Source, Argonne, IL 60439 USA
Recommended Citation
GB/T 7714
Wu, MX,Zhou, X,Croft, M,et al. Single-Crystal Growth and Room-Temperature Magnetocaloric Effect of X-Type Hexaferrite Sr2Co2Fe28O46[J]. INORGANIC CHEMISTRY,2020,59(10):6755-6762.
APA Wu, MX.,Zhou, X.,Croft, M.,Ehrlich, S.,Khalid, S.,...&Cheong, SW.(2020).Single-Crystal Growth and Room-Temperature Magnetocaloric Effect of X-Type Hexaferrite Sr2Co2Fe28O46.INORGANIC CHEMISTRY,59(10),6755-6762.
MLA Wu, MX,et al."Single-Crystal Growth and Room-Temperature Magnetocaloric Effect of X-Type Hexaferrite Sr2Co2Fe28O46".INORGANIC CHEMISTRY 59.10(2020):6755-6762.
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