Precision sample rotator with active angular position readout for a superconducting quantum interference device susceptometer

Anand Bhattacharya; M. T. Tuominen; A. M. Goldman

doi:10.1063/1.1149138

Precision sample rotator with active angular position readout for a superconducting quantum interference device susceptometer

Anand Bhattacharya, M. T. Tuominen, A. M. Goldman

Physics and Astronomy (Twin Cities)

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5 Scopus citations

Abstract

A technique has been devised for precise in situ sample angular positioning and readout in a commercial superconducting quantum interference device (SQUID) susceptometer. The axis of rotation is perpendicular to the applied magnetic field and the temperature range is from 2 K up to room temperature. The technique has an accuracy in angular position of about 0.3%, approximately one degree over one complete rotation. A small coil with an ac current excitation is fixed on the sample stage, and the ac SQUID response is used to determine the angular position of the stage.

Original language	English (US)
Pages (from-to)	3563-3567
Number of pages	5
Journal	Review of Scientific Instruments
Volume	69
Issue number	10
DOIs	https://doi.org/10.1063/1.1149138
State	Published - 1998

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Copyright 2005 Elsevier B.V., All rights reserved.

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abstract = "A technique has been devised for precise in situ sample angular positioning and readout in a commercial superconducting quantum interference device (SQUID) susceptometer. The axis of rotation is perpendicular to the applied magnetic field and the temperature range is from 2 K up to room temperature. The technique has an accuracy in angular position of about 0.3%, approximately one degree over one complete rotation. A small coil with an ac current excitation is fixed on the sample stage, and the ac SQUID response is used to determine the angular position of the stage.",

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AU - Tuominen, M. T.

AU - Goldman, A. M.

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N2 - A technique has been devised for precise in situ sample angular positioning and readout in a commercial superconducting quantum interference device (SQUID) susceptometer. The axis of rotation is perpendicular to the applied magnetic field and the temperature range is from 2 K up to room temperature. The technique has an accuracy in angular position of about 0.3%, approximately one degree over one complete rotation. A small coil with an ac current excitation is fixed on the sample stage, and the ac SQUID response is used to determine the angular position of the stage.

AB - A technique has been devised for precise in situ sample angular positioning and readout in a commercial superconducting quantum interference device (SQUID) susceptometer. The axis of rotation is perpendicular to the applied magnetic field and the temperature range is from 2 K up to room temperature. The technique has an accuracy in angular position of about 0.3%, approximately one degree over one complete rotation. A small coil with an ac current excitation is fixed on the sample stage, and the ac SQUID response is used to determine the angular position of the stage.

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Precision sample rotator with active angular position readout for a superconducting quantum interference device susceptometer

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