Fast sweep-rate plastic Faraday force magnetometer with simultaneous sample temperature measurement
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We present a design for a magnetometer capable of operating at temperatures down to 50 mK and magnetic fields up to 15 T with integrated sample temperature measurement. Our design is based on the concept of a Faraday force magnetometer with a load-sensing variable capacitor. A plastic body allows for fast sweep rates and sample temperature measurement, and the possibility of regulating the initial capacitance simplifies the initial bridge balancing. Under moderate gradient fields of similar to 1 T/m our prototype performed with a resolution better than 1 x 10(-5) emu. The magnetometer can be operated either in a dc mode, or in an oscillatory mode which allows the determination of the magnetic susceptibility. We present measurements on Dy2Ti2O7 and Sr3Ru2O7 as an example of its performance.
Slobinsky , D , Borzi , R A , Mackenzie , A P & Grigera , S A 2012 , ' Fast sweep-rate plastic Faraday force magnetometer with simultaneous sample temperature measurement ' Review of Scientific Instruments , vol 83 , no. 12 , 125104 . DOI: 10.1063/1.4769049
Review of Scientific Instruments
© 2012 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Review of Scientific Instruments, Vol 83, Issue 12, and may be found at: http://scitation.aip.org/content/aip/journal/rsi/83/12/10.1063/1.4769049
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