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On the effect of low-temperature demagnetization on TRMs and pTRMs (1996)

Shcherbakova, V. V. ; Shcherbakov, V. P. ; Schmidt, P. W. ; [et al.]

Oxford, UK : Blackwell Publishing Ltd

Geophysical journal international 127 (1996), S. 0

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ISSN: 1365-246X

Source: Blackwell Publishing Journal Backfiles 1879-2005

Topics: Geosciences

Notes: Low-temperature demagnetization (LTD) experiments with TRMs and pTRMs using liquid nitrogen were carried out on samples with different (MD and PSD) domain structures to infer and to compare the type of domain structure of samples before and after LTD judged by the thermomagnetic criterion. This is based on testing materials against Thellier's law of independence of pTRMs. The results demonstrate good agreement between the commonly used criteria for differentiating domain structure, such as Qrt, Hcr/Hc and Irs/Is factors, and more sophisticated ones, such as the thermomagnetic criterion and LTD treatment. It is noteworthy that there is no observable tendency of MD or PSD samples to display SD-type pTRM=f(r) curves after LTD treatment. Hence our experiments failed to detect a quasi-SD component of remanence acquiring TRM by thermofluctuations in MD or PSD grains in the manner of Verhoogen (1959) and Stacey & Banerjee (1974) hypotheses

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1111/j.1365-246X.1996.tb04727.x

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