Letter | Published:

A Non-destructive Radioanalytical Method for the Determination of Gallium in Substituted Yttrium Iron Garnets

Naturevolume 199pages10811082 (1963) | Download Citation



THE substitution of diamagnetic ions with a valence of three for iron in garnets modifies both the saturation magnetization and the magnetic anisotropy of these materials. So far, there has been no correlation between the extent of the changes in these parameters and the amount of substituted ion. For these reasons and because the amount of garnet material was extremely limited, usually of the order of micrograms, a rapid, nondestructive method for the determination of gallium in yttrium iron garnet was undertaken. The empirical formula of this substituted garnet is (Fe5–xGax)Y3O12, where x is typically in the range of 0.05–0.25.

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    Koch, R. C., Activation Analysis Handbook (Academic Press, New York, 1960).

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    Crouthamel, C. E., Applied Gamma-Ray Spectrometry (Pergamon, Lendon, 1960).

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    Strominger, D., Hollander, J. M., and Seaborg, G. T., Revs. Modern Phys., 30, 585 (1958).

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  1. Air Force Cambridge Research Laboratories, Office of Aerospace Research, L. G. Hanscom Field, Bedford, Mass.

    • J. PAUL CALI
  2. Tracerlab, a Division of Laboratory for Electronics, Inc., Waltham, Mass.



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