DOI: 10.1002/2015GL066306
论文题名: The effect of hydrostatic pressure up to 1.61 GPa on the Morin transition of hematite-bearing rocks: Implications for planetary crustal magnetization
作者: Bezaeva N.S. ; Demory F. ; Rochette P. ; Sadykov R.A. ; Gattacceca J. ; Gabriel T. ; Quesnel Y.
刊名: Geophysical Research Letters
ISSN: 0094-8352
EISSN: 1944-8083
出版年: 2015
卷: 42, 期: 23 起始页码: 10188
结束页码: 10196
语种: 英语
英文关键词: hematite-bearing rock
; hydrostatic pressure
; Martian magnetic anomalies
; Morin transition
Scopus关键词: Hematite
; Hydraulics
; Hydrostatic pressure
; Magnetization
; Quantum interference devices
; SQUIDs
; Banded iron formations
; Crustal magnetization
; High pressure cells
; Isothermal remanent magnetization
; Magnetic anomalies
; Morin transitions
; Pressure applications
; Superconducting quantum interference
; Pressure effects
; crustal structure
; hematite
; hydrostatic pressure
; magnetic anomaly
; magnetic field
; magnetization
; magnetometer
; Mars
; remanent magnetization
英文摘要: We present new experimental data on the dependence of the Morin transition temperature (TM) on hydrostatic pressure up to 1.61 GPa, obtained on a well-characterized multidomain hematite-bearing sample from a banded iron formation. We used a nonmagnetic high-pressure cell for pressure application and a Superconducting Quantum Interference Device magnetometer to measure the isothermal remanent magnetization (IRM) under pressure on warming from 243 K to room temperature (T0). IRM imparted at T0 under pressure in 270 mT magnetic field (IRM270mT) is not recovered after a cooling-warming cycle. Memory effect under pressure was quantified as IRM recovery decrease of 10%/GPa. TM, determined on warming, reaches T0 under hydrostatic pressure 1.38-1.61 GPa. The pressure dependence of TM up to 1.61 GPa is positive and essentially linear with a slope dTM/dP = (25 ± 2) K/GPa. This estimate is more precise than previous ones and allows quantifying the effect of a pressure wave on the upper crust magnetization, with special emphasis on Mars. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84953635024&doi=10.1002%2f2015GL066306&partnerID=40&md5=59781a0aea10e0353a1610f5dac1151d
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7968
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Earth Physics Department, Faculty of Physics, M.V. Lomonosov Moscow State University, Moscow, Russian Federation
Recommended Citation:
Bezaeva N.S.,Demory F.,Rochette P.,et al. The effect of hydrostatic pressure up to 1.61 GPa on the Morin transition of hematite-bearing rocks: Implications for planetary crustal magnetization[J]. Geophysical Research Letters,2015-01-01,42(23).