DOI: 10.1002/grl.50763
论文题名: Remanent magnetization and coercivity of rocks under hydrostatic pressure up to 1.4 GPa
作者: Demory F. ; Rochette P. ; Gattacceca J. ; Gabriel T. ; Bezaeva N.S.
刊名: Geophysical Research Letters
ISSN: 0094-8733
EISSN: 1944-8464
出版年: 2013
卷: 40, 期: 15 起始页码: 3858
结束页码: 3862
语种: 英语
英文关键词: Magnetism
Scopus关键词: Acquisition systems
; Coercivity of remanence
; Isothermal remanent magnetization
; Magnetic mineralogy
; Mineral samples
; Pressure cycling
; Remanent magnetization
; Titanomagnetites
; Coercive force
; Hydrostatic pressure
; Magnetism
; Remanence
; Minerals
; dispersal
; hydrostatic pressure
; magnetization
; magnetometer
; mineral
; superconductivity
英文摘要: We designed an Isothermal Remanent Magnetization (IRM) acquisition system based on permanent magnets and sized to accommodate an amagnetic hydrostatic pressure cell. This pressure cell fits in a superconducting rock magnetometer, allowing for the measurement of remanent magnetization of pressurized samples. With this system, we determined the coercivity of remanence (Bcr) at different hydrostatic pressures up to 1.4 GPa for rock and dispersed mineral samples with various magnetic mineralogy and domain state. IRM and B cr are nearly identical before compression and after decompression, indicating no permanent changes in the magnetic properties during pressure cycling. Hydrostatic pressure up to 1.4 GPa does not significantly increases IRM under pressure except for multidomain pyrrhotite and magnetite which show an increase of about 40%. Relative increase of Bcr under pressure is mild, except for a near single domain titanomagnetite where Bcr doubles. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84883220073&doi=10.1002%2fgrl.50763&partnerID=40&md5=72beb3e82bc7884b93960f327b98f49f
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5997
Appears in Collections: 气候减缓与适应
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作者单位: Aix-Marseille Université, CNRS, CEREGE UM34, 13545 Aix en Provence, France
Recommended Citation:
Demory F.,Rochette P.,Gattacceca J.,et al. Remanent magnetization and coercivity of rocks under hydrostatic pressure up to 1.4 GPa[J]. Geophysical Research Letters,2013-01-01,40(15).