Janis Research Company

Permanent magnets for use with ST-500 microscopy cryostat

May 2004

Janis Research Company is extending the microscopy cryostat product line with a new accessory for magnetic measurements. Using the same proven cryostat design as the regular ST-500 cryostat, the ST-500 for magnetic measurements features an extended sample mount for use inside the bore of a magnet. This extended sample mount may be purchased separately, or with a set of permanent magnets for measurements in fields of up to 0.5 T. A set consists of up to five interchangeable magnets: the full set allows measurements in discrete steps of 0.1 T.

The figure below shows the ST-500 with extended sample mount and permanent magnet. The length of the extension may be specified at the time of ordering, and the position of the magnet relative to the sample is fixed using a Teflon spacer. The magnetic field direction is perpendicular to the plane of the sample.

The flexible ST-500 design means that the cryostat may be ordered with an extended sample holder and vacuum shroud for magnetic measurements, and a standard sample holder and vacuum shroud for other measurements. Switching between the two holders is as simple as changing samples.

Existing ST-500 cryostats may be upgraded by simply ordering the special sample holder, vacuum shroud top plate and radiation shield cover.

Contact Janis today for further details and pricing information.

Mechanical Drawing of possible permanent magnet layout with ST-500 Microscopy Cryostat, Janis Research, cryogenics

Model ST-500 with permanent magnet

Close up of sample mount of ST-500 Microscopy Cryostat with permanent magnet, Janis Research

Close up of sample mount area in
Model ST-500 with permanent magnet

Microscopy Cryostat with extended sample mount
for use inside bore of magnet

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Model ST-500 with permanent magnet

Close up of sample mount area in Model ST-500 with permanent magnet

Microscopy Cryostat with extended sample mount for use inside bore of magnet

Close up of sample mount area in
Model ST-500 with permanent magnet

Microscopy Cryostat with extended sample mount
for use inside bore of magnet