SR Sample Carriers: Interchangable platforms for rapid sample replacement
One of the most challenging aspects of any uniaxial strain measurement is sample mounting. This process is made even more difficult if electrical connections must be made to the sample. The SR sample carriers simplify this process by allowing multiple samples to be mounted on multiple sample carriers that can be rapidly exchanged when required.
Applications and Use
Make more efficient use of instrument time
Every research group wants to be getting the best use out of their cryostat (and other instrumentation). Preventing wasted time saves research budget and increases the speed at which data can be collected. Time becomes even more precious at a user facility, such as magnet or a beamline, when a whole PhD can rest on just a few days data collection. Razorbills range of SR sample carriers mean that a broken sample does not lead to disaster, merely a few minutes inconvenience.
Experiment with tricky-to-mount samples
The SR sample carriers can withstand high temperature epoxy cures, plasma surface treatments and aggressive acid cleaning processes. Consequently, they are suitable for use with high-temperature cure epoxies that may allow reliable bonding to samples that were previously difficult to mount or attach contacts to.
Retain samples for future experiments
At the end of a strain experiment, with conventional sample mounting, it is impossible to remove the sample while keeping the electrical contacts intact, and usually it is very difficult not to break the sample completely. SR sample carriers can be removed from the stress/strain cell with the sample and electrical connections intact. This means that the samples can be filed away and kept in case more measurements are required later.
The sample is mounted on the sample platform as normal, the one exception being there are no sample mounting screws. Instead the sample resting in epoxy surrounded by a horseshoe-shaped spacer capped with a cover foil. If desired, high temperature epoxies can be used because the sample platform is much more resilient to high temperature than the stress/strain devices themselves.
If the intended measurement that requires contacts near the sample (for example an electrical transport measurement of a magnetic susceptibility measurement) then a WP100 wiring platform can be added to the device.
Electrical transport measurements can be challenging because of the requirement to make electrical contacts to the sample either before or after the sample is mounted. A SR sample platform can be incredibly helpful, because it allows many samples to be prepared on many sample platforms in advance of a measurement. If a failure occurs at low temperature, for example a sample unexpectedly breaking or a wire detaching, then one prepared sample can be exchanged for another in a matter of minutes.
|Operational considerations||Produces a small force offset and a crosstalk between the applied displacement and applied force. Effect becomes negligible for stiff samples.||Produces a crosstalk between the measured displacement and measured force. Can be reduced through calibration.||Slightly reduces sample access on the top side of device.|
These dimensioned drawings and CAD models will enable you to determine your preferred way to mount the cell in your cryostat.
To download the .STEP files, please right-click on the the download link and select “save link as…” then select where you want to save the file, specifying a .step filetype.
|Datasheet||Please contact Razorbill Instruments||Please contact Razorbill Instruments|
|Dimensioned drawings||Please contact Razorbill Instruments|
|CAD model (.STEP)||Please contact Razorbill Instruments||Please contact Razorbill Instruments||Please contact Razorbill Instruments|
There are many more useful resources on our downloads page, including a guide for installing the cell in your cryostat, a sample mounting guide and numerous other useful documents. Please fill in the contact form below to access our downloads page.
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