Precision Thermometer for the Region 10–40 K
- 1 January 1969
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 40 (1), 109-113
- https://doi.org/10.1063/1.1683700
Abstract
A low temperature thermometer based on the temperature dependence of the vF(T) of the 19F NMR frequency in antiferromagnetic MnF2 has been successfully operated in the 10–40 K temperature region. Novel features include the use of a MnF2 crystal with a sharp 19F NMR line as the temperature sensitive element in a solid state frequency‐locking autodyne circuit that operates while completely submerged in liquid H2 or He. In the present design the circuit‐sample combination takes the form of a compact probe. With this device temperature readings which are reproducible to ±10−4 K at 20 K have been obtained. Various applications for precision thermometry in the 10–40 K range using the device are proposed.Keywords
This publication has 5 references indexed in Scilit:
- Nuclear Quadrupole Resonance ThermometryMetrologia, 1965
- Locked rf Spectrometer for Nuclear Quadrupole ResonanceReview of Scientific Instruments, 1965
- Zero-Field Manganese Nuclear Magnetic Resonance in Antiferromagnetic Manganese FluoridePhysical Review B, 1964
- Nuclear Magnetic Resonance in Antiferromagnetic Mnunder Hydrostatic PressurePhysical Review B, 1960
- Structure-sensitivity of the high-frequency NMR in powdered antiferromagnetic MnF2Journal of Physics and Chemistry of Solids, 1959