Sample preparation

 

Due to the nature of the equipment used, restrictions apply on the type of samples that can be submitted. The service will only accept samples that are prepared following the tips explained below.

MPMS XL

Powder

Material in powder form must be delivered inside gelatine or pollycarbonate capsules and the user is responsible of putting the powder inside the capsules. User must ensure that no powder can escape from the capsule, so that equipment contamination is avoided.

Do not manipulate the material with potentially magnetic tweezers, spatules, etc. since it could introduce false contributions to the magnetic signal.

Gelatin capsules degrade with humidity. Avoid its contact to any polar solvents or direct contact to skin.

For ferromagnetic or ferrimagnetic materials, it is advised to look for the expected saturation magnetization and limit the mass if the expected magnetic moment would be larger than 0.5emu.

NO LIQUID SAMPLES ARE ALLOWED. IF ANY SOLVENT IS USED, IT MUST BE FIRST EVAPORATED!

Capsules are provided by the service.

Thin films

Sample width cannot be greater than 6mm. Despite there is no theoretical limitation on the height, it is advised to be as short as possible in order not to degrade the reliability of the reported value.

The ideal form factor is a square of 5x5mm2

Make sure that the back side of the substrate does not contain any trace of silver paste, sticky tape or any other material that could eventually trap metallic particles.

Bulk samples

Sample width cannot be greater than 6mm. Despite there is no theoretical limitation on the height, it is advised to be as short as possible in order not to degrade the reliability of the reported value.

Due to the large amount of mass, user should ensure that the expected magnetic moment is not larger than 0.5emu. If so, it should be considered the possibility of further reducing the sample size.

If the material under study is brittle a gelatin capsule or any other kind of protection must be used in order to avoid to contaminate the sample chamber.

Other samples

Contact to the Service Technician in order to study the case.

PPMS - Resistivity & AC Transport

 

DSCN9158 Only bulk samples or thin films can be measured by this technique.

Sample must be contacted to the puk sample holder using a four-wire schema. Wire-bonding contacts and silver paste assisted contacts can be used depending on the nature of the sample.

Wires and silver paste are not provided by the service.

Wire-bonding facility is available in the Nanoquim platform.

Service can lend sample holders for both AC Transport and Resistivity options (rotator version and regular version) for a limited period of time.

Contact to the Service Manager for more details.

PPMS - VSM Low Temperature

DSCN9165

Powder

Material in powder form must be delivered inside gelatine or pollycarbonate capsules and the user is responsible of putting the powder inside the capsules. User must ensure that no powder can escape from the capsule, so that equipment contamination is avoided.

Do not manipulate the material with potentially magnetic tweezers, spatules, etc. since it could introduce false contributions to the magnetic signal.

Gelatin capsules degrade with humidity. Avoid its contact to any polar solvents or direct contact to skin.

NO LIQUID SAMPLES ARE ALLOWED. IF ANY SOLVENT IS USED, IT MUST BE FIRST EVAPORATED!

Capsules are provided by the service.

Thin films

Sample width cannot be greater than 10mm. Despite there is no theoretical limitation on the height, it is advised to be as short as possible in order not to degrade the reliability of the reported value.

The ideal form factor is a square of 5x5mm2

Make sure that the back side of the substrate does not contain any trace of silver paste, sticky tape or any other material that could eventually trap metallic particles.

Bulk samples

Sample width cannot be greater than 10mm. Despite there is no theoretical limitation on the height, it is advised to be as short as possible in order not to degrade the reliability of the reported value.

If the material under study is brittle a gelatin capsule or any other kind of protection must be used in order to avoid to contaminate the sample chamber.

Other samples

Contact to the Service Technician in order to study the case.

PPMS - VSM Oven

 

DSC03150 The experimental setup limits sample width to 3mm. Sample will be mounted using Al2O3 cement diluted with water. Please, ensure that this glue system does not harm your material.

Powder samples should be pressed into pellets or embedded with other matrix material that does not degrade at high temperature. Al2O3 cement can be used in this case.

Bulk samples and thin films can be used with no problem as long as their width is less than 3mm.

Please, contact to the Service Manager for more details

PPMS - AC Susceptibility

Powder

Material in powder form must be delivered inside gelatine or pollycarbonate capsules and the user is responsible of putting the powder inside the capsules. User must ensure that no powder can escape from the capsule, so that equipment contamination is avoided.

Do not manipulate the material with potentially magnetic tweezers, spatules, etc. since it could introduce false contributions to the magnetic signal.

Gelatin capsules degrade with humidity. Avoid its contact to any polar solvents or direct contact to skin.

NO LIQUID SAMPLES ARE ALLOWED. IF ANY SOLVENT IS USED, IT MUST BE FIRST EVAPORATED!

Capsules are provided by the service.

Thin films

Sample width cannot be greater than 6mm. Despite there is no theoretical limitation on the height, it is advised to be as short as possible in order not to degrade the reliability of the reported value.

The ideal form factor is a square of 5x5mm2

Make sure that the back side of the substrate does not contain any trace of silver paste, sticky tape or any other material that could eventually trap metallic particles.

Bulk samples

Sample width cannot be greater than 6mm. Despite there is no theoretical limitation on the height, it is advised to be as short as possible in order not to degrade the reliability of the reported value.

If the material under study is brittle a gelatin capsule or any other kind of protection must be used in order to avoid to contaminate the sample chamber.

 

PPMS - Torque

Torque The experimental setup allows only the use of bulk samples or thin fims not larger than 1x1mm2. The desired rotation must be clearly indicated either in the sample, or by using a drawing sketch.

Only bulk or thin film samples are accepted