How did barium titanate particulates stick together in the nebula

Details How did barium titanate particulates stick together in the nebula How did barium titanate particulates stick together in the nebula

Nov 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977natur.270..192s&link_type=abstract

Nature, vol. 270, Nov. 10, 1977, p. 192.

Computer Science

Barium Titanates, Ferroelectricity, Particulates, Planetary Nebulae, Solar Corona, Solar System, Absorption Cross Sections, Abundance, Grains, Meteoritic Composition

Scientific paper

Masuda and Tanaka (1977) proposed that the ferroelectric properties of barium titanate may have enabled barium titanate particulates to stick together in the primordial solar nebula. This letter considers whether ferroelectric particles may provide preferred nuclei for accretionary processes. The capture cross section of a small uniformly polarized barium titanate crystal is examined, and it is shown that an enhanced capture cross section can explain why ferroelectric particles stick together when available but does not account for the high barium abundances found in eucrites and in the Allende meteorite. Selective spatial separation and enrichment due to radiation pressure and Lorentz forces are suggested as the mechanism for producing high barium titanate concentrations that lie well above statistical fluctuations.

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