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Start Over Descriptor "ParM" Journal chinese science bulletin
3 results on '"ParM"'

1. Partial anhysteretic remanent magnetization (pARM) of synthetic single- and multi-domain magnetites and its paleoenvironmental significance.

Author

Liu Qingsong, Yu Yongjae, Pan Yongxin, Zhu Rixiang, and Zhao Xixi

Subjects
*MAGNETIZATION, *FERROMAGNETISM, *MAGNETITE, *PALEOMAGNETISM, *MAGNETIC properties of rocks, *MINERALS
Abstract

In order to isolate magnetic signals carried by single-domain (SD) ferrimagnetic (FM) minerals from multi-domain (MD) FM minerals, we developed a few parameters using partial anhysteretic remanent magnetization (pARM). Because MD fraction contains only soft (easy to be demagnetized) coercivity spectrum, pARM(>20 mT) was sensitive in eliminating MD contributions. Ratio of pARM(5 mT, 10 mT)/pARM(0, 5 mT) is useful in quantifying a relative abundance of mass ratio between SD and MD fractions. These new proxies can quickly characterize the details of grain size distribution of magnetic minerals in paleoclimatic and paleomagnetic studies. [ABSTRACT FROM AUTHOR]

Published
2005
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2. Partial anhysteretic remanent magnetization (pARM) of synthetic single- and multidomain magnetites and its paleoenvironmental significance

Author

Yongjae Yu, Rixiang Zhu, Yongxin Pan, Qingsong Liu, and Xixi Zhao

Subjects
Multidisciplinary, Materials science, Magnetic minerals, Ferrimagnetism, Remanence, ParM, Mineralogy, Coercivity, Rock magnetism
Abstract

In order to isolate magnetic signals carried by single-domain (SD) ferrimagnetic (FM) minerals from multi-domain (MD) FM minerals, we developed a few parameters using partial anhysteretic remanent magnetization (pARM). Because MD fraction contains only soft (easy to be demagnetized) coercivity spectrum, pARM(>20 mT) was sensitive in eliminating MD contributions. Ratio of pARM(5 mT, 10 mT)/pARM(0, 5 mT) is useful in quantifying a relative abundance of mass ratio between SD and MD fractions. These new proxies can quickly characterize the details of grain size distribution of magnetic minerals in paleoclimatic and paleomagnetic studies.

Published
2005

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