title: Fast sweep-rate plastic Faraday force magnetometer with simultaneous sample temperature measurement.
abstract: 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 ~1 T/m our prototype performed with a resolution better than 1 × 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 Dy(2)Ti(2)O(7) and Sr(3)Ru(2)O(7) as an example of its performance.
authors.affiliation: SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews KY16 9SS, United Kingdom.
authors.forename: D
authors.initials: D
authors.lastname: Slobinsky
authors.forename: R A
authors.initials: RA
authors.lastname: Borzi
authors.forename: A P
authors.initials: AP
authors.lastname: Mackenzie
authors.forename: S A
authors.initials: SA
authors.lastname: Grigera
mesh_terms: D004867:Equipment Design; D060306:Magnetometry / Q000295:instrumentation*; D059346:Magnets; D010087:Oxides / Q000737:chemistry; D010969:Plastics; D013696:Temperature; D013997:Time Factors
chemical_list: D010087:Oxides; D010969:Plastics