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1 PublicationAnalytical balance-based Faraday magnetometer
Riminucci, A.; Uhlarz, M.; de Santis, R.; Herrmannsdörfer, T.
Abstract
We introduce a Faraday magnetometer based on an analytical balance in which we were able to apply magnetic fields up to 0.14 T. We calibrated it with a 1mm Ni sphere previously characterized in a superconducting quantum interference device (SQUID) magnetometer. The proposed magnetometer reached a theoretical sensitivity of 3x 10-8 Am2. We demonstrated its operation on magnetic composite scaffolds made of poly(e-caprolactone)/iron-doped hydroxyapatite. To confirm the validity of the method, we measured the same scaffold properties in a SQUID magnetometer. The agreement between the two measurements was within 5% at 0.127 T and 12% at 24mT. With the addition, for a small cost, of a permanent magnet and computer controlled linear translators, we were thus able to assemble a Faraday magnetometer based on an analytical balance, which is a virtually ubiquitous instrument. This will make simple but effective magnetometry easily accessible to most laboratories, in particular, to life sciences ones, which are increasingly interested in magnetic materials.
Involved research facilities
- High Magnetic Field Laboratory (HLD)
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Journal of Applied Physics 121(2017), 094701
DOI: 10.1063/1.4977719
ISSN: 0021-8979
Cited 9 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-25309