Panoply - Mineralogical

Analyses of magnetic properties and magnetostratigraphy on u-channels (IRM and S-ratio)

2015-12-07T09:07:04+00:00

Cryogenic magnetometer with helium equipped with high resolution pick-up coils designed for measurements on u-channel type samples (2G Enterprises)

Instrument description:

Helium-free cryogenic magnetometer dedicated to the high resolution (4.5 cm) measurement of Isothermal Remanent Magnetization (IRM) on continuous series (maximum square section of 22 mm, maximum length of 1.5 m). Three alternating field (AF) coils are installed in line for stepwise demagnetization, as well as one solenoid for ARM acquisition. The system is placed in the µmetal shielded room.

Principle of the analysis:

The remanent magnetization is measured along the 3 axes X, Y, Z with high resolution pick-up coils. The magnetizations can be demagnetized along the three axes by alternating field up to 100 mT. Stepwise acquisition of IRM can also be performed as well as its stepwise AF demagnetization. The entire procedure is controlled using a dedicated software.

Analyses performed with the instrument:

Measurement of isothermal remanent magnetizations (IRM) on continuous series
Stepwise AF demagnetization

Contact:

Gwenaël Hervé : 01.69.08.02.48 / gwenael.herve[a]lsce.ipsl.fr

Analyses of magnetic properties and magnetostratigraphy on u-channels (NRM and ARM)

2015-12-07T09:19:17+00:00

Cryogenic magnetometer equipped with high resolution pick-up coils, specifically designed for measurements of various remanent magnetizations on u-channel type samples (2G Enterprises)

Instrument description:

Cryogenic magnetometer dedicated to high resolution (4.5 cm) measurement of remanent magnetizations (Natural Remanent Magnetization (NRM), Anhysteretic Remanent Magnetization (ARM), Isothermal Remanent Magnetization (IRM)) on continuous series (maximum square section of 22 mm, maximum length of 1.5 m). Three alternating field (AF) coils are installed in line for stepwise demagnetization and a long solenoid for the acquisition of high field IRM (up to 1T). The magnetometer is placed within the µmetal shielded room.

Principle of the analysis:

The remanent magnetization is measured along the 3 axes X, Y, Z with high resolution pick-up coils. The magnetization can be demagnetized along the three axes by alternating field up to 100 mT. Stepwise acquisition of IRM can also be performed as well as the back-field acquisition (S-ratio, HIRM). The entire procedure is controlled using a dedicated software.

Analyses performed with the instrument:

Measurement of all remanent magnetizations (NRM, ARM, IRM) on continuous series
Stepwise AF demagnetization
Acquisition of high field IRM.

Contact:

Gwenaël Hervé : 01.69.08.02.48 / gwenael.herve[a]lsce.ipsl.fr

Analyses of magnetic properties, magnetostratigraphy, archeomagnetism on discrete samples (NRM, ARM, IRM, S-ratio)

2015-12-07T09:25:21+00:00

Cryogenic magnetometer equipped with high homogeneity pick-up coils, designed for standard size samples (2G Entreprises)

Instrument description:

Cryogenic magnetometer equiped with three high homogeneity pick-up coils. The magnetometer is placed within the µmetal shielded room.

Principle of the analysis:

Cryogenic magnetometer measuring at once the three components X, Y and Z of the remanent magnetization (Natural Remanent Magnetization (NRM), Anhysteretic Remanent Magnetization (ARM), Isothermal Remanent Magnetization (IRM)) carried by standard size sample (25 mm x max 22 mm for cylinders, 22 mm side for cubes). The magnetometer is placed within the µmetal shielded room. See the description of zero-field furnaces and of alternating field demagnetization for the associated demagnetization modes.

Analyses performed with the instrument:

All remanent magnetizations (natural, anhysteretic, isothermal) on standard sedimen, archaeological baked clays and lava samples.

Contacts:

Gwenaël Hervé : 01.69.08.02.48 / gwenael.herve[a]lsce.ipsl.fr

Measurements of low-field magnetic susceptibility on u-channels

2015-12-07T09:46:03+00:00

Horizontal low-field magnetic susceptibility track for continuous sequences (maximum length of 1.5 m) with automated translation.

Instrument description:

Bartington coil MS2C (22mm diameter; spatial resolution: 4.5 cm)

Analyses performed with the instrument:

Low-field magnetic susceptibility

Adapted for sediments sampled with u-channels

Contact:

Gwenaël Hervé : 01.69.08.02.48 / gwenael.herve[a]lsce.ipsl.fr

Magnetic hysteresis curves and isothermal remanent curves (IRM) at variable temperatures (77-950 K)

2015-12-07T09:51:40+00:00

Vibrating Sample Magnetometer (VSM LakeShore 8600)

Instrument description:

Electromagnet (1.5 T or 2.3 T selon pole gaps) to investigate magnetic coercivities with high precision and high sensibility.

Analyses performed with the instrument:

Hysteresis curves
Isothermal remanent magnetization curves (acquisition and backfield)
First Order Reversal Curves (FORCs)
Measurements at variable temperatures (77 – 950 K)
Can be applied to all kind of samples (rocks, sediments, soils, archaeological baked clays…)
Measurements on small fragments or powders (a few 100 mg)

Contacts:

Gwenaël Hervé : 01.69.08.02.48 / gwenael.herve[a]lsce.ipsl.fr

Funding:

CNRS/INSU
DIM MAP MeV Project

High-field thermomagnetic curves (Curie balance)

2015-12-07T11:25:50+00:00

Variable field translation balance (VFTB, Mag-Instruments)

Instrument description:

Suspended magnet with a furnace into the polar pieces. The powder of samples is placed in a sample holder positioned into the furnace and submitted to a field gradient. The entire temperature spectrum from 20°C to 700°C can be investigated by heating and cooling cycles.

Analyses performed with the instrument:

Induced magnetization profiles versus temperature during heating and cooling. Can measure sediments, lava samples and archaeological baked clays.

Contacts:

Gwenaël Hervé : 01.69.08.02.48 / gwenael.herve[a]lsce.ipsl.fr

Zero field thermal demagnetization

2015-12-07T11:30:52+00:00

Furnaces for zero-field thermal demagnetization (Pyrox)

Instrument description:

µmetal shielded furnaces for thermal demagnetization (from 20°C up to 700°C) of standard size discrete samples in zero-field.

Analyses performed with the instrument:

Zero-field thermal demagnetization (stepwise demagnetization). The remanent magnetization of samples is measured after each temperature step using high-homogeneity cryogenic magnetometer.

Contacts:

Gwenaël Hervé : 01.69.08.02.48 / gwenael.herve[a]lsce.ipsl.fr

Alternating field demagnetization and ARM acquisition

2015-12-07T11:34:21+00:00

Alternating field demagnetizer, Anhysteretic remanent magnetization (ARM) acquisition, anisotropy of ARM (AGICO LDA-3A)

Instrument description:

Alternating field coils. Sample holder static in different position or tumbling. The field ramp (up and down), as well as the duration of the application of the peak field, are controlled. Possibility of superimposing a continuous field for the acquisition in different positions of the anhysteretic remanent magnetization (ARM).

Analyses performed with the instrument:

Alternating field demagnetization of standard size samples.

Anhysteretic remanent magnetization acquisition for standard size samples

Contacts:

Gwenaël Hervé : 01.69.08.02.48 / gwenael.herve[a]lsce.ipsl.fr

X-ray diffractometry

2015-12-07T11:38:37+00:00

D8 - Advance diffractometer (Bruker)

The platform is equipped with a D8 - Advance diffractometer (Bruker) dedicated to phase identification in polycrystalline samples.

Special features

Sealed tube with Cu anode
Bragg-Brentano geometry for powder reflection analysis
Programmable divergence slits
Sollers slits
Automatic motorized anti-diffusion knife
Spinner
60-position autosampler
Parallel beam geometry with Goebel mirror and collimators for reflection micro-diffraction analysis
Collimators for micro-diffraction (sizes available: 500 µm, 300 µm, 100 µm)
Multimode detector Eiger2 R (500 x 1000 pixels) (Dectris Ltd.)
Motorized X,Y,Z stage and localization camera
ICDD/PDF-4+, Diffract.EVA, Diffract.TOPAS licenses

Application on powders

Bragg-Brentano geometry with anti-diffusion knife and autosampler, detector mainly used in 1D mode.

This configuration enables phase identification and semi-quantitative analysis of large sample series, on:

Slides after specific treatment (ethylene glycol, heating) for clay phases characterization
Conventional sample holders for large quantities of powders
Single-crystal silicon holders for micro-quantities.

Applications in micro-diffractometry

Parallel beam geometry with collimator, motorized stage, location camera, detector used in 1D or 2D mode.

The detector can be positioned vertically or horizontally (maximum gamma aperture of 30°), and works even with large, oriented crystallites. The motorized stage coupled to the localization camera allows the acquisition of spots, transects or maps of objects precisely located in the sample.

User chart

By using this instrument, the user undertakes to respect the general principles of fair use/re-use of data (ERIC DARIAH Data Re-use Charter). Intellectual property rights to results obtained on samples entrusted to the platform by an academic organization, and not involving any inventive activity on its part, remain with that organization. Users must adhere to the terms of DARIAH, in particular:

A single citation format for the use of data (article, book or symposium/conference), which may only be used with the explicit agreement of all participants in the work, and must include an exhaustive list of authors.
The data produced will be made available to the scientific community, if they have not been used after 5 years.

Funding

This instrument has been co-financed by the Ile-de-France Region as part of the "Natural Heritage" major area of interest (DIM MAP).

Contacts
Julius NOUET – 01 69 15 61 21 – julius.nouet[a]universite-paris-saclay.fr
Amélie PLAUTRE – 01 69 15 61 27 – amelie.plautre[a]universite-paris-saclay.fr

Laser granulometer Mastersizer 3000 HYDRO-G

2015-12-07T11:43:26+00:00

Laser granulometer Mastersizer 3000 HYDRO-G

Device description

The platform is equipped with a Mastersizer 3000 HYDRO-G granulometer, measuring the size of particles suspended in a dispersant (water) by laser diffraction

Principle of analysis

This technique involves measuring the intensity of light scattered as a laser beam passes through a sample of dispersed particles. This data is then analyzed to calculate the size of the particles that created the diffraction image, according to Mie and Fraunhofer diffraction theory.
The particle size analyzer consists of three main components:

An optical bench: a dispersed sample passes through the measurement zone of the optical bench, where the laser beam illuminates the particles. A series of detectors then precisely measure the intensity of the light scattered by the sample particles over a wide angular range.
Sample preparation (accessories): Sample dispersion is controlled by a series of dry and liquid dispersion units. These ensure that particles are delivered to the optical bench's measurement zone at the correct concentration and in a stable, appropriate state of dispersion.
Instrument software: the particle size analyzer software controls the system during measurement and analyzes the scattering data to calculate the particle size distribution.

Analyses performed on the instrument

Particle size analysis from 0.02 to 2000 µm

User chart

A single citation format for the use of data (article, book or symposium/conference), which may only be used with the explicit agreement of all participants in the work, and must include an exhaustive list of authors.
The data produced will be made available to the scientific community, if they have not been used after 5 years.

Funding

This instrument has been co-financed by the Ile-de-France Region as part of the "Natural Heritage" major area of interest (DIM MAP).

Contacts

Julius NOUET – 01 69 15 61 21 – julius.nouet[a]universite-paris-saclay.fr
Amélie PLAUTRE – 01 69 15 61 27 – amelie.plautre[a]universite-paris-saclay.fr

Panoply - Mineralogical

Analyses of magnetic properties and magnetostratigraphy on u-channels (IRM and S-ratio)

Cryogenic magnetometer with helium equipped with high resolution pick-up coils designed for measurements on u-channel type samples (2G Enterprises)

Instrument description:

Principle of the analysis:

Analyses performed with the instrument:

Contact:

Analyses of magnetic properties and magnetostratigraphy on u-channels (NRM and ARM)

Cryogenic magnetometer equipped with high resolution pick-up coils, specifically designed for measurements of various remanent magnetizations on u-channel type samples (2G Enterprises)

Instrument description:

Principle of the analysis:

Analyses performed with the instrument:

Contact:

Analyses of magnetic properties, magnetostratigraphy, archeomagnetism on discrete samples (NRM, ARM, IRM, S-ratio)

Cryogenic magnetometer equipped with high homogeneity pick-up coils, designed for standard size samples (2G Entreprises)

Instrument description:

Principle of the analysis:

Analyses performed with the instrument:

Contacts:

Measurements of low-field magnetic susceptibility on u-channels

Horizontal low-field magnetic susceptibility track for continuous sequences (maximum length of 1.5 m) with automated translation.

Instrument description:

Analyses performed with the instrument:

Contact:

Magnetic hysteresis curves and isothermal remanent curves (IRM) at variable temperatures (77-950 K)

Vibrating Sample Magnetometer (VSM LakeShore 8600)

Instrument description:

Analyses performed with the instrument:

Contacts:

Funding:

High-field thermomagnetic curves (Curie balance)

Variable field translation balance (VFTB, Mag-Instruments)

Instrument description:

Analyses performed with the instrument:

Zero field thermal demagnetization

Furnaces for zero-field thermal demagnetization (Pyrox)

Instrument description:

Analyses performed with the instrument:

Contacts:

Alternating field demagnetization and ARM acquisition

Alternating field demagnetizer, Anhysteretic remanent magnetization (ARM) acquisition, anisotropy of ARM (AGICO LDA-3A)

Instrument description:

Analyses performed with the instrument:

Contacts:

X-ray diffractometry

D8 - Advance diffractometer (Bruker)

Special features

Application on powders

Bragg-Brentano geometry with anti-diffusion knife and autosampler, detector mainly used in 1D mode.

Applications in micro-diffractometry

Parallel beam geometry with collimator, motorized stage, location camera, detector used in 1D or 2D mode.

The detector can be positioned vertically or horizontally (maximum gamma aperture of 30°), and works even with large, oriented crystallites. The motorized stage coupled to the localization camera allows the acquisition of spots, transects or maps of objects precisely located in the sample.

User chart

Funding

Contacts Julius NOUET – 01 69 15 61 21 – julius.nouet[a]universite-paris-saclay.frAmélie PLAUTRE – 01 69 15 61 27 – amelie.plautre[a]universite-paris-saclay.fr

Laser granulometer Mastersizer 3000 HYDRO-G

Laser granulometer Mastersizer 3000 HYDRO-G

Device description

Principle of analysis

Analyses performed on the instrument

User chart

Funding

Contacts

Contacts
Julius NOUET – 01 69 15 61 21 – julius.nouet[a]universite-paris-saclay.fr
Amélie PLAUTRE – 01 69 15 61 27 – amelie.plautre[a]universite-paris-saclay.fr