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Rotational viscosity of ferrofluids and the Taylor instability in a magnetic field

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Zeitschrift für Physik B Condensed Matter

Abstract

We have measured the rotational viscosity Δη of a concentrated ferrofluid by observing the increase of the first critical angular velocity in a Taylor cell with longitudinal magnetic field. The method is suitable for a very accurate determination of Δη because of the sensitivity of the onset of Taylor instabilities to the effective viscosity of the fluid. The results are in agreement with recent theoretical investigations.

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Authors and Affiliations

  1. Sektion Physik der Universität München, D-8000, München 40, Germany

    M. Holderied, L. Schwab & K. Stierstadt

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  1. M. Holderied
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  2. L. Schwab
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  3. K. Stierstadt
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Holderied, M., Schwab, L. & Stierstadt, K. Rotational viscosity of ferrofluids and the Taylor instability in a magnetic field. Z. Physik B - Condensed Matter 70, 431–433 (1988). https://doi.org/10.1007/BF01312116

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  • DOI: https://doi.org/10.1007/BF01312116

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