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Magnetism of Al-substituted magnetite reduced from Al-hematite

文献类型：期刊论文

作者Jiang, Zhaoxia1,2,3; Liu, Qingsong1,2; Zhao, Xiang3; Roberts, Andrew P.3; Heslop, David3; Barron, Vidal4; Torrent, Jose4
刊名JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
出版日期2016-06-01
卷号121期号:6页码:4195-4210
DOI10.1002/2016JB012863
文献子类Article
英文摘要Aluminum-substituted magnetite (Al-magnetite) reduced from Al-substituted hematite or goethite (Al-hematite or Al-goethite) is an environmentally important constituent of magnetically enhanced soils. In order to characterize the magnetic properties of Al-magnetite, two series of Al-magnetite samples were synthesized through reduction of Al-hematite by a mixed gas (80% CO2 and 20% CO) at 395 degrees C for 72 h in a quartz tube furnace. Al-magnetite samples inherited the morphology of their parent Al-hematite samples, but only those transformed from Al-hematite synthesized at low temperature possessed surficial micropores, which originated from the release of structural water during heating. Surface micropores could thus serve as a practical fingerprint of fire or other high-temperature mineralogical alteration processes in natural environments, e.g., shear friction in seismic zones. In addition, Al substitution greatly affects the magnetic properties of Al-magnetite. For example, coercivity (B-c) increases with increasing Al content and then decreases slightly, while the saturation magnetization (M-s), Curie temperature (T-c), and Verwey transition temperature (T-v) all decrease with increasing Al content due to crystal defect formation and dilution of magnetic ions caused by Al incorporation. Moreover, different trends in the correlation between Tc and Bc can be used to discriminate titanomagnetite from Al-magnetite, which is likely to be important in environmental and paleomagnetic studies, particularly in soil.
WOS关键词ISOTHERMAL REMANENT MAGNETIZATION ; OCEAN-FLOOR BASALTS ; CHINESE LOESS ; IRON-OXIDES ; HYSTERESIS PROPERTIES ; ACQUISITION CURVES ; BACTERIAL MAGNETITE ; MINERAL DIAGENESIS ; SINGLE-DOMAIN ; SOILS
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000381627300009
资助机构National Program on Global Change and Air-Sea Interaction(GASI-04-01-02) ; National Program on Global Change and Air-Sea Interaction(GASI-04-01-02) ; National Program on Global Change and Air-Sea Interaction(GASI-04-01-02) ; National Program on Global Change and Air-Sea Interaction(GASI-04-01-02) ; National Natural Science Foundation of China(41504055 ; National Natural Science Foundation of China(41504055 ; National Natural Science Foundation of China(41504055 ; National Natural Science Foundation of China(41504055 ; Chinese Continental Shelf Deep Drilling Program(GZH201100202) ; Chinese Continental Shelf Deep Drilling Program(GZH201100202) ; Chinese Continental Shelf Deep Drilling Program(GZH201100202) ; Chinese Continental Shelf Deep Drilling Program(GZH201100202) ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Australian Research Council(DP110105419 ; Australian Research Council(DP110105419 ; Australian Research Council(DP110105419 ; Australian Research Council(DP110105419 ; 41430962 ; 41430962 ; 41430962 ; 41430962 ; DP120103952) ; DP120103952) ; DP120103952) ; DP120103952) ; 41374073 ; 41374073 ; 41374073 ; 41374073 ; 41025013) ; 41025013) ; 41025013) ; 41025013) ; National Program on Global Change and Air-Sea Interaction(GASI-04-01-02) ; National Program on Global Change and Air-Sea Interaction(GASI-04-01-02) ; National Program on Global Change and Air-Sea Interaction(GASI-04-01-02) ; National Program on Global Change and Air-Sea Interaction(GASI-04-01-02) ; National Natural Science Foundation of China(41504055 ; National Natural Science Foundation of China(41504055 ; National Natural Science Foundation of China(41504055 ; National Natural Science Foundation of China(41504055 ; Chinese Continental Shelf Deep Drilling Program(GZH201100202) ; Chinese Continental Shelf Deep Drilling Program(GZH201100202) ; Chinese Continental Shelf Deep Drilling Program(GZH201100202) ; Chinese Continental Shelf Deep Drilling Program(GZH201100202) ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Australian Research Council(DP110105419 ; Australian Research Council(DP110105419 ; Australian Research Council(DP110105419 ; Australian Research Council(DP110105419 ; 41430962 ; 41430962 ; 41430962 ; 41430962 ; DP120103952) ; DP120103952) ; DP120103952) ; DP120103952) ; 41374073 ; 41374073 ; 41374073 ; 41374073 ; 41025013) ; 41025013) ; 41025013) ; 41025013)
源URL[http://ir.iggcas.ac.cn/handle/132A11/53315]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China
2.Qingdao Natl Oceanog Lab Marine Sci & Technol, Lab Marine Geol, Qingdao, Peoples R China
3.Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT, Australia
4.Univ Cordoba, Dept Agron, Cordoba, Spain
推荐引用方式
GB/T 7714		 Jiang, Zhaoxia,Liu, Qingsong,Zhao, Xiang,et al. Magnetism of Al-substituted magnetite reduced from Al-hematite[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2016,121(6):4195-4210.
APA Jiang, Zhaoxia.,Liu, Qingsong.,Zhao, Xiang.,Roberts, Andrew P..,Heslop, David.,...&Torrent, Jose.(2016).Magnetism of Al-substituted magnetite reduced from Al-hematite.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,121(6),4195-4210.
MLA Jiang, Zhaoxia,et al."Magnetism of Al-substituted magnetite reduced from Al-hematite".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 121.6(2016):4195-4210.

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来源：地质与地球物理研究所

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