Sample Platforms
Sample probe with Rotation about
Horizontal
Axis
We offer a sample probe fitted
with a platform for a single sample which is capable of
±135 degrees rotation about the horizontal axis.
The probe is fitted with 3
twisted pair electrical leads for experimental use,
these are wired from the sample platform to a multi-pin
Fisher connector at the top of the probe. The sample
platform is also fitted with a 30 point calibrated
Cernox thermometer (1.4K to 325K) and a small
heater.
Wiring for the heater
and thermometer is taken to a separate 6 pin Fisher
connector at the top of the probe.
Rotation of the platform
is done manually from the top of the probe. A multi-turn
knob with a calibration is fitted. A positional accuracy
of better than 1 degree may be
obtained.
Sample probe with Rotation about
Vertical Axis
We
offer a sample probe which allows the sample to be
manually rotated through 360 degrees around the vertical
axis. The sample probe comprises a top flange housing
all electronics feedthroughs (for samples and
temperature sensor) fixed to a stainless steel tube
which supports a copper sample mount at the field
centre.
Rotation of the platform is done
manually from the top of the probe. A multi-turn knob
with a calibration is fitted. A positional accuracy of
better than 1 degree may be obtained. The probe provides
a sample platform at the centre of the magnetic field
where up to two samples may be placed. The probe is
fitted with 4 twisted pair electrical leads for
experimental use, these are wired from the sample
platform to a multi-pin Fisher connector at the top of
the probe. The sample platform is also fitted with a 30
point calibrated Cernox thermometer (1.4K to 325K)
and a small heater. Wiring for the heater and
thermometer is taken to a separate
6 pin Fisher connector at the top of the
probe.
Electronic transport probe
Provides a sample platform
at the centre of the magnetic field where up to two
samples may be placed. Wiring is provided for two 4-wire
measurements in addition to the temperature
sensor.
Specific heat
probe
Allows for vacuum isolation of the samples for
performing specific heat experiments. The vacuum space
may be pressurised from an external gas bottle (not
provided) for thermalisation of the sample before the
experiment begins. The sample is mounted on a platform
weakly thermally linked to the main
support.
Motorised rotation
probe
This permits the sample to be rotated
+/-1800 about the vertical plane and the
position determined to an accuracy of 0.050 (optionally
0.010).
AC susceptibility
measurement facility
A probe with AC driver coil and astatic pick-up
coil pair is provided to allow AC susceptibility to be
measured over the range 5Hz to 10KHz. At 1KHz the probe
permits susceptibility of 10-8 emu to be measured in a
driver AC field of 200 gauss with a background field of
0 to 8T (5 x 10-8 in 14T). Sample size is limited to 4mm
dsv. Additional electronics necessary for driving the
coils are provided.
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