Z Silvestri et al 2003 Metrologia 40 172 doi:10.1088/0026-1394/40/4/305
Volume magnetic susceptibility of gold–platinum alloys: possible materials to make mass standards for the watt balance experiment
Z Silvestri1, R S Davis2, G Genevès3, A Gosset4, T Madec4, P Pinot1 and P Richard5
Show affiliationsIn 2000, the Bureau National de Métrologie (BNM, France) decided to develop a new watt balance experiment. Among numerous design studies, the choice of the transfer mass is particularly important. Because of the proximity to a source of high magnetic intensity, this mass must have a magnetic susceptibility as weak as possible. Gold–platinum alloy seems to meet this requirement, as well as additional requirements for density and hardness values, making it a possible candidate for mass standard realization. Five different gold–platinum alloys were studied, their volume magnetic susceptibility ranging from −2.8×10−5 to −2.1×10−5 for two of them and from +1.1×10−5 to +8.8×10−5 for the other three.
- PACS
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75.30.Cr Saturation moments and magnetic susceptibilities
07.10.Lw Balance systems, tensile machines, etc.
07.55.Jg Magnetometers for susceptibility, magnetic moment, and magnetization measurements
- Subjects
- Dates
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Issue 4 (August 2003)
Received 27 January 2003
Published 13 June 2003
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Volume magnetic susceptibility of gold–platinum alloys: possible materials to make mass standards for the watt balance experiment
Z Silvestri et al 2003 Metrologia 40 172
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