On the precision of a susceptibility apparatus as deduced from measurements on superconducting vanadium

A. Van den Bosch; J. Vansummeren

doi:10.1016/0040-6031(84)87275-5

On the precision of a susceptibility apparatus as deduced from measurements on superconducting vanadium

A. Van den Bosch
, J. Vansummeren

Research output › peer-review

Abstract

An apparatus for measuring static magnetic susceptibilities, based on a sensitive (10^-9 N) vacuum microbalance, has been adapted for measuring magnetic moments of small superconducting samples in small gradients of low fields. Data taken on vanadium at 3.2 K can be analysed for sample moments consisting of two parts: an induced one, proportional to the field; and a permanent one. The analyses of the data show that for a single sample on an undisturbed balance the relative precision on the forces at low temperatures can be better than 0.04 %. For coil positions ranging over 2 cm a good agreement is observed between the experimental and the calculated forces by fitting for one proportionality constant.

Original language	English
Pages (from-to)	51-62
Number of pages	12
Journal	Thermochimica Acta
Volume	82
Issue number	1
DOIs	https://doi.org/10.1016/0040-6031(84)87275-5
State	Published - 1 Dec 1984

ASJC Scopus subject areas

Instrumentation
Condensed Matter Physics
Physical and Theoretical Chemistry

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10.1016/0040-6031(84)87275-5

Cite this

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title = "On the precision of a susceptibility apparatus as deduced from measurements on superconducting vanadium",

abstract = "An apparatus for measuring static magnetic susceptibilities, based on a sensitive (10-9 N) vacuum microbalance, has been adapted for measuring magnetic moments of small superconducting samples in small gradients of low fields. Data taken on vanadium at 3.2 K can be analysed for sample moments consisting of two parts: an induced one, proportional to the field; and a permanent one. The analyses of the data show that for a single sample on an undisturbed balance the relative precision on the forces at low temperatures can be better than 0.04 \%. For coil positions ranging over 2 cm a good agreement is observed between the experimental and the calculated forces by fitting for one proportionality constant.",

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AU - Vansummeren, J.

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N2 - An apparatus for measuring static magnetic susceptibilities, based on a sensitive (10-9 N) vacuum microbalance, has been adapted for measuring magnetic moments of small superconducting samples in small gradients of low fields. Data taken on vanadium at 3.2 K can be analysed for sample moments consisting of two parts: an induced one, proportional to the field; and a permanent one. The analyses of the data show that for a single sample on an undisturbed balance the relative precision on the forces at low temperatures can be better than 0.04 %. For coil positions ranging over 2 cm a good agreement is observed between the experimental and the calculated forces by fitting for one proportionality constant.

AB - An apparatus for measuring static magnetic susceptibilities, based on a sensitive (10-9 N) vacuum microbalance, has been adapted for measuring magnetic moments of small superconducting samples in small gradients of low fields. Data taken on vanadium at 3.2 K can be analysed for sample moments consisting of two parts: an induced one, proportional to the field; and a permanent one. The analyses of the data show that for a single sample on an undisturbed balance the relative precision on the forces at low temperatures can be better than 0.04 %. For coil positions ranging over 2 cm a good agreement is observed between the experimental and the calculated forces by fitting for one proportionality constant.

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