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MicrostatMO

A compact helium cryostat with integrated 5 T magnet for microscopy applications.

  • Wide sample temperature range: From 6 K to 300 K

  • Magnetic field up to 5 T: Suitable for majority of spectroscopy applications

  • Low vibration and drift: Typically 4 nm/min


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  •  Wide sample temperature range from 6 K to 300 K
  • Magnetic field up to 5 T, satisfying the majority of spectroscopy applications
  • Low vibration and drift: typically 4 nm/min
  • Low sample vibration: <20 nm typical
  • Short working distance of 8.5 mm enabling the use of high magnification optics
  • Can be orientated horizontally or vertically, providing flexibility for setting-up the experiment
  • Designed for easy integration of optical components on the cryostat top plate
  • Can be used for reflection and transmission measurements
  • Minimum downtime: convenient continuous operation including improved 300 K operation
  • Quick sample change using a demountable sample holder. Two options are available: a copper sample platform for lower base temperature or a sapphire platform for optical transmission measurements
  • System can be cooled using a pressurised liquid helium dewar for convenient operation with minimum vibration
  • Mounting bracket supplied to clamp the cryostat to the bench, thus reducing vibrations introduced by the transfer tube
  • 1 year standard warranty

Versatile: Provides a cryogenic environment (6 K) ideal for sensitive optical and electrical measurements in magnetic field (up to 5 T).

Low cryogen consumption: Brings significant benefits in terms of running cost.

Simple: The experimental windows and sample holders can be easily changed.

Easy to use: A range of window materials are available. Please contact your local sales representative for more information.

Software control: Oxford Instruments electronics products are controllable through the software using RS232, USB (serial emulation), TCP/IP or GPIB interfaces. LabVIEW function libraries and virtual instruments are provided for Oxford Instruments electronics products to allow PC-based control and monitoring. These can be integrated into a complete LabVIEW data acquisition system.

 

Temperature range on a demountable copper sample holder (standard)
7 to 300 K measured with pressurised LHe storage dewar     
6 K achieved with MO-PUMP option (untested unless ordered)
Temperature stability: ± 0.1 K
Typical average liquid helium consumption at 7 K: 2 litre/h
Typical liquid helium consumption per day: 25 litres based on 10 hours of operation and including two complete sample changes
Room temperature to 7 K: ~4 hours
Weight: < 25 kg

Magnet

5TMAG 5 Tesla superconducting solenoid magnet
Central field: 5 Tesla
Operating current (nominal): <= 42 A
Magnetic field homogeneity: <= 2% total variation over a 5 mm diameter sphere (dsv)
Persistent mode switch Fitted
Magnetic field stability in persistent mode: <= 0.01%/h measured at 5 T
Maximum magnetic field sweep rate: 1.0 T/min

Typical sample position drift at constant (stabilised) sample temperature
        all directions (nm/min): 4 in zero magnetic field
        xy plane (nm/min): 4 in non-zero magnetic field, in persistent mode
        z axis (nm/min): 15 in non-zero magnetic field, in persistent mode

A typical system comprises of:

  • Cryostat
  • Transfer siphon
  • Temperature Controller
  • Magnet and Power Supply
  • Accessories and Manuals
  • Software
  • Microscopic optical measurements, such as Photoluminescence and Raman scattering under varying magnetic field.
  • Study of microstructures such as quantum dots / wires / wells and nanostructured semiconductor devices
  • Flux visualisation of superconducting materials; 5 T magnetic field extends the range of samples that may be studied to include materials with strong flux pinning
  • Electrical transport measurements using very small currents for nanoscale samples, quantum devices and nano-devices
  • Measurement of dimensional changes of magneto-restrictive materials

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