Microstat®BT, System for high resolution magneto-optical measurements

MicrostatBT

This cryostat has been designed for magneto-optical imaging and high-resolution micro-spectroscopy in the presence of magnetic fields(up to 5T) and low temperatures( as low as 3K).

The cryostat is made up of two components:

• A compact 5 tesla vertical solenoid with 40 or 70mm room temperature bore
• A MicrostatHiResII continuous flow cryostat with a pillar that extends into the room temperature bore of the magnet. A mechanical XYZ translation stage is available to position a sample at the focal point of a microscope or at the field centre, as desired

Key features and benefits

• Sub-micron spatial resolution measurements possible at 4.2K
• Low sample drift at changing temperature enabling long experiments without having to readjust the optics
• Combined low temperature and magnetic field environments.
• Adjustable window position, enabling the minimum working distance for sample thicknesses of up to 6mm.
• Easy sample change involving unscrewing the top of the pillar
• Although the pillared MicrostatHiResII and magnet cryostat are supplied as an integrated system, they are perfectly able to operate independently:
  -The pillared MicrostatHiResII can be used outside the magnet in its normal way.  The pillar may even be removed and replaced by a standard cap for an easier interface with some microscopes or spectrometers
  -Likewise the magnet provides a flexible ultra-compact 5 tesla magnet with 40mm RT bore access.  Persistent operation gives hold times greater than 12 hours

Automation
LabVIEW^TM virtual instruments are available for the ITC503 and IPS120 to allow automation of temperature and field. These can be integrated into a complete data acquisition system.

Applications:

• Flux visualisation of superconducting materials
• Micro-Raman or micro-photoluminescence spectroscopy for studying spatial variation in electronic states and the chemical composition of materials under applied field
• The measurement of dimensional changes of magneto-strictive materials