Abstract
The influence of a magnetic field on the capacitance of a glass-ceramic temperature sensor (Lake Shore CS-501GR) has been measured extensively at temperatures down to 0.09 K and magnetic fields up to 12 T. While the influence of a magnetic field is still negligible at 4 K, the sensor shows an increasing non-monotonic dependence on the magnetic field with falling temperature. The maximum relative change of capacitance with respect to the zero field value remains smaller than 5 · 10−4. However, with the given sensitivity of the sensor, this small magnetoeffect may not be ignored in the low temperature region.
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References
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Lake Shore Cryotronics, Inc., Westerville, OH 43092-8888 USA, CS-501GR capacitive temperature sensor, serial numbers 2114 and 2121. Typical magnetic field induced temperature error is ΔT/T = −0.15% at T= 4.2 K and B = 18.7 T and the lower limit of the useful temperature range is specified as 1 K. The sensor material is described as a multilayer ceramic element.
A more detailed comparison will be published elsewhere: R. Haueisen, K. Kiefer, G. Weiss to be published.
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