First-order symmetry of weak-field partial thermoremanence in multi-domain ferromagnetic grains. 1. Experimental evidence and physical implications

Biggin, Andrew J.; Poidras, Thierry

doi:10.1016/j.epsl.2006.02.035

Cited by 40 publications

(48 citation statements)

References 22 publications

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“…In particular the true nature of T b1 and T b2 (Section 3) and the relation between the two is not understood. Model B is based on the first-order symmetry of T b1 and T b2 , which, although experimentally observed (Biggin and Poidras, 2006), may not hold in all cases.…”

Section: The Existence Of An MD Sweet-spotmentioning

confidence: 98%

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Thellier-type paleointensity data from multidomain specimens

Paterson

Biggin

Hodgson

et al. 2015

Physics of the Earth and Planetary Interiors

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Section: The Existence Of An MD Sweet-spotmentioning

confidence: 98%

“…The model is founded on the experimental observation of first-order symmetry between pTRM acquisition and demagnetization in MD-like specimens made by Biggin and Poidras (2006). Full details of the original model and the good first order agreement with experimental data are given by Biggin (2006).…”

Section: The Phenomenological Modelmentioning

confidence: 99%

Thellier-type paleointensity data from multidomain specimens

Paterson

Biggin

Hodgson

et al. 2015

Physics of the Earth and Planetary Interiors

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“…In order to explain this observation, we must use the kinematic model derived by Biggin and Poidras (2006) and used to simulate palaeointensity experiments by Biggin (2006). In this model, the behaviour of an assemblage of MD grains undergoing thermomagnetic treatments is governed by the following one-dimensional differential equation:…”

Section: Discussionmentioning

confidence: 99%

“…Dunlop and Ozdemir, 2001;Shcherbakov et al, 2001b). Most recently, Biggin and Poidras (2006) demonstrated that it is more intuitive in most cases to regard low-temperature tails of pTRMs as high temperature tails of demagnetisation treatments.…”

Section: Introductionmentioning

confidence: 99%

The behaviour and detection of partial thermoremanent magnetisation (PTRM) tails in Thellier palaeointensity experiments

Biggin

Perrin

2007

Earth Planet Sp

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We analyse the results of Thellier palaeointensity experiments modified so that the measured magnetisation at any stage may be decomposed into components of natural remanent magnetisation (NRM) and laboratory thermal remanent magnetisation (TRM). We demonstrate that the very long high temperature tails of pTRM acquired by multidomain (MD) grains may be detected in Thellier experiments without recourse to explicit pTRM tail check measurements. This can save time in the experimental process and provides a more sensitive indication of how MD behaviour may affect that particular experiment than either pTRM tail checks or the observation of zigzagging in an IZZI experiment. We observe that the action of imparting a pTRM tail also involves some removal of NRM. However, the pTRM tails are not the analogues of classical overprints as may be intuitively expected but instead appear to favour remagnetisation over demagnetisation. This and other observed behaviour is not consistent with any phenomenological model of MD TRM but is consistent with predictions made by kinematic theory.

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“…3) The experimental investigation of physical properties of thermo, thermo-viscous, and chemical remanent magnetizations, according to the size of magnetic minerals (Biggin and Poidras, 2006;Draeger et al, 2006). during more than 10 years, we have worked on its development and upgrade with the objective of improving both its reliability and its sensitivity.…”

Section: Introductionmentioning

confidence: 99%

Controlled atmosphere vibrating thermo-magnetometer (CatVTM): a new device to optimize the absolute paleointensity determinations

2009

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The laboratory of paleomagnetism of Montpellier (France) has developed a new one-axis vibrating thermal magnetometer dedicated to the study of physical properties of natural rocks remanence. Among its key characteristics, this apparatus allows both measurement of the magnetization moment on the interval from room temperature to 700• C with a precision of 2 × 10 −9 A m 2 and acquisition of a total or a partial thermo-remanent magnetization using a steady field from −100 up to 100 μT. Another point that is worth noting is that one can apply a controlled atmosphere by means of argon flux to prevent oxidation of the studied sample during heating. We report here a technical description of this new instrument and review some specific applications in absolute paleointensity surveys.

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First-order symmetry of weak-field partial thermoremanence in multi-domain ferromagnetic grains. 1. Experimental evidence and physical implications

Cited by 40 publications

References 22 publications

Thellier-type paleointensity data from multidomain specimens

Thellier-type paleointensity data from multidomain specimens

The behaviour and detection of partial thermoremanent magnetisation (PTRM) tails in Thellier palaeointensity experiments

Controlled atmosphere vibrating thermo-magnetometer (CatVTM): a new device to optimize the absolute paleointensity determinations

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