Abstract
I HAVE earlier discussed the high permittivity of barium titanate and its temperature behaviour1. Additional experimental results such as the dependence of permittivity on the electrical field strength, the dielectric hysteresis loops and the maximum in the thermal capacity at the permittivity peak temperature show that this substance is a new type of ferro-electric. It should be noted that, as distinct from other known ferro-electrics, barium titanate does not contain hydrogen. For practical purposes, it is important to note that it may be used as an electrical insulator in which the ferro-electric properties are manifest over a wide temperature range. A detailed article will be published in the Journal of Physics.
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References
Wul, B., Nature, 156, 480 (1945).
Jackson, W., and Reddish, W., Nature, 156, 717 (1945).
Eremeyew, M., and Kurtschatow, B., Phys. Z. Sowjetunion, 3, 304 (1933).
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WUL, B. Barium Titanate: a New Ferro-Electric. Nature 157, 808 (1946). https://doi.org/10.1038/157808a0
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DOI: https://doi.org/10.1038/157808a0
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