Letter | Published:

Dielectric Dispersion in Crystalline Di-isopropyl Ketone

Nature volume 158, page 619 (02 November 1946) | Download Citation

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Abstract

DIPOLAR rotation is well known to occur in a number of organic crystals, for example, d-camphor1 and cyclopentanol2, and in ice3,4 far below the melting point. The dielectric behaviour of these substances is remarkable in that solidification is only shown as a minor discontinuity of the polarization curve, and it may be said that such compounds do not freeze dielectrically at their macroscopic freezing point. In some cases, dipolar rotation stops at a transition taking place at a lower temperature. Whether or not dispersion is observed in the crystalline state should depend on the frequency used.

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  1. British Rubber Producers' Research Association, 48 Tewin Road, Welwyn Garden City, Herts. Sept. 30.

    • A. SCHALLAMACH

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DOI

https://doi.org/10.1038/158619a0

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