Results 161 to 170 of about 3,374 (191)

Remagnetization of a Fractal Magnetic Structure

Bulletin of the Russian Academy of Sciences: Physics, 2020
The magnetization of a fractal structure is modeled mathematically by assuming a system is characterized by the lowest possible energy in the equilibrium state. Magnetization curves are calculated for fractal structures. The remagnetization of a regularly magnetized system is compared to the magnetization of a system with fractal structure.
O. P. Polyakov, M. L. Akimov, P. A. Polyakov   +2 more
openaire   +1 more source

Remagnetization of the Alamo Breccia, Nevada

Geological Society, London, Special Publications, 2012
Abstract The Devonian Alamo Breccia is a thick (<30–130 m) unit, interpreted as a bolide impact deposit, which is bracketed by marine carbonates. Samples were collected within the breccia and above/below the breccia for a contact test to determine if the breccia acted as a conduit for fluids that could have caused the ...
Stacey C. Evans, R. Douglas Elmore, Devin Dennie, Shannon A. Dulin   +3 more
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Hydrocarbon seepage dating through chemical remagnetization

Geological Society, London, Special Publications, 1995
Abstract A magnetostratigraphic study of Permian red sandstones from the Van Dyck well, offshore the Netherlands, revealed an anomalous magnetization, with normal polarity and a high inclination (+47°), interpreted as a Jurassic chemical remagnetization.
Hervé Perroud, Annick Chauvin, Michel Rebelle   +2 more
openaire   +1 more source

Hydrothermal fluid-controlled remagnetization of sedimentary rocks in Korea: Tectonic importance of pervasive Tertiary remagnetization

Tectonophysics, 2009
Abstract In order to better understand the tectonic environment of the Korean Peninsula since Cretaceous, a paleomagnetic study was carried out on the Jinan Basin located in southwestern Korea. From the demagnetization of 597 samples, we found that remanence is carried by pyrrhotite and/or magnetite (black siltstone) and hematite (red siltstone ...
Wonnyon Kim, Seong-Jae Doh, Yongjae Yu, Jeong Jick Lee, Dongwoo Suk   +4 more
openaire   +1 more source

On remagnetization problems in palaeomagnetism

Earth and Planetary Science Letters, 1968
Abstract Palaeomagnetic properties of igneous rocks in relation to their thermal history are discussed. Owing to a longlasting and complicated thermal history of most igneous formations it is suggested that in general the original thermoremanence has been replaced by a viscous build-up at moderate temperatures.
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Experimental stress remagnetization of magnetite

Tectonophysics, 1996
Abstract Pseudo-single-domain (PSD) and multidomain (MD) magnetite grains remagnetize in weak magnetic field (30 μT) during experimental triaxial deformation. The magnetite is supported in a calcite-cement matrix. Minor remagnetization occurs with hydrostatic stress of 100 MPa. Significant remagnetization requires hydrostatic pressure of 150 MPa with
openaire   +1 more source

Remagnetization Experiments in Mn1+xFe2−xO4

Journal of Applied Physics, 1959
The remagnetization time τ has been measured as a function of external field H for a series of manganese ferrites, Mn1+xFe2−xO4. The physical properties of these compounds which enter into the domain wall model of Menyuk and Goodenough and the rotational model of Gyorgy have also been measured.
T. J. Matcovich, C. J. Kriessman
openaire   +1 more source

Casting synchrotron light on remagnetized carbonates

2023
We revisit the discussion on the geological processes able to remagnetize vast extensions of intracratonic basins. The main hypotheses for these processes involve: (1) external warm fluids, (2) hydrocarbon maturation, or (3) burial diagenesis and clay minerals transformation.
Ualisson Bellon, Ricardo Ivan Ferreira da Trindade, Douglas Galante, Wyn Williams   +3 more
openaire   +1 more source

Stress-induced remagnetization in magnetostrictive films

Journal of Applied Physics, 2004
Strictly stress-induced magnetization reversal in magnetostrictive Co50Fe50/Co80B20 multilayers was studied by magneto-optical Kerr microscopy. The remagnetization takes place by rotational processes in externally applied stress in the absence of magnetic fields. Multiple small-angle domains develop at low magnetic anisotropy.
Jeffrey McCord, Rudolf Schäfer, Michael Frommberger, Stefan Glasmachers, Eckhard Quandt   +4 more
openaire   +1 more source

Pulsed remagnetization of thin magnetic films

Soviet Physics Uspekhi, 1974
Thin magnetic films occupy a special place in the problem of pulsed remagnetization of ferromagnets. The straight-through domain structure, the slight effect of eddy currents, and a number of other peculiarities make films convenient objects for studying the nature of pulsed remagnetization.
O.S. Kolotov, V.A. Pogozhev, R.V. Telesnin   +2 more
openaire   +1 more source