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An automated torque magnetometer for use in a 13 T superconducting solenoid

M J Hawton and W D Corner

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A torque magnetometer is described which is designed to operate in the 25 mm diameter, variable temperature (4.2-400 K), sample tube of a superconducting solenoid able to provide a field of up to 13 T. The existing instrument is able to measure torques up to 0.3 N m with a resolution of 10-6 N m, and is controlled by a BBC microcomputer. Examples of torque curves measured on samples of sintered and powder Nd2Fe14B are given.


PACS

07.55.-w Magnetic instruments and components

07.10.Pz Instruments for strain, force, and torque

84.71.Ba Superconducting magnets; magnetic levitation devices

Subjects

Superconductivity

Instrumentation and measurement

Dates

Issue 4 (April 1987)



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