Fundamental relations of mineral specific magnetic carriers for paleointensity determination

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F17%3A10363669" target="_blank" >RIV/00216208:11310/17:10363669 - isvavai.cz</a>

Alternative codes found

RIV/67985831:_____/17:00481730

Result on the web

<a href="http://dx.doi.org/10.1016/j.pepi.2017.09.008" target="_blank" >http://dx.doi.org/10.1016/j.pepi.2017.09.008</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.pepi.2017.09.008" target="_blank" >10.1016/j.pepi.2017.09.008</a>

Result language

angličtina

Original language name

Fundamental relations of mineral specific magnetic carriers for paleointensity determination

Original language description

A fundamental linear relationship exists between the efficiency of thermoremanent magnetization measured at room temperature and the magnitude of the ambient field at the time of acquisition. The magnetic efficiency (the ratio of thermoremanent magnetization to saturation remanent magnetization) multiplied by the saturation mag-netization is proportional to the magnetizing field, where the proportionality constant is independent of magnetic mineralogy and domain state. The empirical constant for this equation was determined using existing experimen-tal data of single domain through pseudosingle domain to multidomain states of iron, meteoritic iron, magnetite, maghemite, pyrrhotite, and hematite. We show that the acquired magnetic efficiency is closely related to two types of demagnetizing fields that act as barriers against domain wall pinning during magnetic acquisition. The first relates to the saturation magnetization that is derived from the distribution of Bohr magnetons within the crystal lattice, and the second originates from grain shape. Theoretical considerations imply a factor of two dif-ference in the magnetic efficiency acquired during laboratory and geologic timescales. This equation reveals that troilite may be a potentially important magnetic carrier for extraterrestrial magnetism. Using magnetic scanning techniques, our relationship allows for estimating the paleointensity from samples that contain more than one magnetic species.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10505 - Geology

Project

<a href="/en/project/GA17-05935S" target="_blank" >GA17-05935S: Role of changes in environemntal chemistry on lake ecosystems at the Younger Dryas onset</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physics of the Earth and Planetary Interiors

ISSN

0031-9201

e-ISSN

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Volume of the periodical

neuveden

Issue of the periodical within the volume

septembre

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

7

Pages from-to

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UT code for WoS article

000415773900005

EID of the result in the Scopus database

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