نتایج جستجو برای: natural remanent magnetization

تعداد نتایج: 499215  

Journal: :Science 1999
Connerney Acuna Wasilewski Ness Reme Mazelle Vignes Lin Mitchell Cloutier

The Mars Global Surveyor spacecraft, in a highly elliptical polar orbit, obtained vector magnetic field measurements above the surface of Mars (altitudes >100 kilometers). Crustal magnetization, mainly confined to the most ancient, heavily cratered martian highlands, is frequently organized in east-west-trending linear features, the longest extending over 2000 kilometers. Crustal remanent magne...

Journal: :Geochemistry Geophysics Geosystems 2021

Distinct crustal remanent magnetic anomalies are a strong indicator of rocks with stable natural magnetization (NRM) carriers. The latter able to store information on the history rock over long geological periods, and can therefore be used for variety applications in field paleomagnetism magnetism. Typically, paleomagnetic rock-magnetic studies rely bulk properties. With advent high-resolution ...

2015
Marilyn W. L. Monster Lennart V. de Groot Mark J. Dekkers

The multispecimen protocol (MSP) is a method to estimate the Earth’s magnetic field’s past strength from volcanic rocks or archeological materials. By reducing the amount of heating steps and aligning the specimens parallel to the applied field, thermochemical alteration and multi-domain effects are minimized. We present a new software tool, written for Microsoft Excel 2010 in Visual Basic for ...

Journal: :Physical review letters 2005
Richard J Harrison Takeshi Kasama Thomas A White Edward T Simpson Rafal E Dunin-Borkowski

The ability of certain magnetic minerals to acquire a remanent magnetization that opposes the direction of the Earth's magnetic field has fascinated rock magnetists since its discovery in 1951. Here, we determine the origin of this phenomenon, which is termed self-reversed thermoremanent magnetization (SR-TRM). We present direct transmission electron microscopy observations of negative exchange...

2009
P. L. Grande L. C. C. M. Nagamine J. Morais

The aim of this work is to investigate the effects of 593 MeV Au irradiation using two different projectile charges, namely Au and Au on the structural, transport and magnetization properties of Co/NiFe/Co/Cu multilayers. X-Ray diffraction and extended x-ray absorption fine structures measurements show no significant structural change for as deposited and irradiated multilayers. On the other ha...

2013
Sreekantha Reddy Dugasani Namhoon Lee Junwye Lee Byeonghoon Kim Si Un Hwang Keun Woo Lee Won Nam Kang Sung Ha Park

We developed a new method of fabricating a divalent copper ion (Cu(2+)) modified DNA thin film on a glass substrate and studied its magnetic properties. We evaluated the coercive field (Hc), remanent magnetization (Mr), susceptibility (χ), and thermal variation of magnetization with varying Cu(2+) concentrations [Cu(2+)] resulting in DNA thin films. Although thickness of the two dimensional DNA...

2002
Rob Van der Voo

From 27 (out of a total of 29) sites a characteristic pre-folding magnetization has been obtained with D = 150 °, I = +20 °, a g s = 3 . 5 °, and paleopole at 38°N, 132°E. However, we conclude from a bedding-error test and a conglomerate test, as well as from descriptions of the hematite as a replacement mineral, that the magnetization is a (late) post-depositional chemical remanent magnetizati...

2016
Yanping Wei Cunxu Gao Zhendong Chen Shibo Xi Weixia Shao Peng Zhang Guilin Chen Jiangong Li

We report a stable, tunable and non-volatile converse magnetoelectric effect (ME) in a new type of FeAl/PIN-PMN-PT heterostructure at room temperature, with a giant electrical modulation of magnetization for which the maximum relative magnetization change (ΔM/M) is up to 66%. The 109° ferroelastic domain switching in the PIN-PMN-PT and coupling with the ferromagnetic (FM) film via uniaxial anis...

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