Mechanism of the parasitic remanence of aluminous goethite [alpha-(Fe, Al)OOH]

doi:10.1029/2004JB003352

	Mechanism of the parasitic remanence of aluminous goethite [alpha-(Fe, Al)OOH]
	Liu, QS ; Torrent, J ; Yu, YJ ; Deng, CL
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
	2004-12-24
卷号	109 期号:B12
关键词	magnetism aluminous goethite low-temperature techniques
ISSN号	2169-9313
DOI	10.1029/2004JB003352
文献子类	Article
英文摘要	The Neel temperature (T-N) of cation-substituted goethites is controlled by the degree of isomorphous substitution and crystal defects. In particular, the exact relationship between the T-N of the antiferromagnetism (AFM) and the unblocking temperature (TB) of the parasitic remanence is undetermined. We found that T-B is systematically higher than T-N for a set of well-characterized aluminous goethite samples. In addition, the difference between T-B and T-N increases from similar to8-9 K for a pure goethite (that contains vacancies) to >20 K for Al-substituted goethites. This indicates that T-B and T-N change independently with the diamagnetic substitutions, suggesting a fundamental difference of magnetization process between parasitic remanence and AFM. A zonal distribution of the diamagnetic substitutions has been incorporated to account for the observed magnetic properties of the AFM and the parasitic remanence. Nonetheless, both parasitic remanence and AFM could exist along the goethite c axis.
WOS关键词	SYNTHETIC GOETHITE ; NEEL TEMPERATURE ; MAGNETIC-SUSCEPTIBILITY ; NATURAL GOETHITE ; IRON-OXIDES ; FIELD ; THERMOREMANENCE ; BEHAVIOR ; FEOOH
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000226028300005
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/64409]
专题	中国科学院地质与地球物理研究所
通讯作者	Liu, QS
作者单位	1.Univ Minnesota, Dept Geol & Geophys, Inst Rock Magnetism, Minneapolis, MN USA 2.Chinese Acad Sci, Inst Geol & Geophys, Paleomagnetism Lab, Beijing 100029, Peoples R China 3.Univ Cordoba, Dept Ciencias & Recursos Agr & Forestales, E-14080 Cordoba, Spain 4.Univ Calif San Diego, Scripps Inst Oceanog, Geosci Res Div, La Jolla, CA 92093 USA
推荐引用方式 GB/T 7714	Liu, QS,Torrent, J,Yu, YJ,et al. Mechanism of the parasitic remanence of aluminous goethite [alpha-(Fe, Al)OOH][J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2004,109(B12).
APA	Liu, QS,Torrent, J,Yu, YJ,&Deng, CL.(2004).Mechanism of the parasitic remanence of aluminous goethite [alpha-(Fe, Al)OOH].JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,109(B12).
MLA	Liu, QS,et al."Mechanism of the parasitic remanence of aluminous goethite [alpha-(Fe, Al)OOH]".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 109.B12(2004).