Susceptibility measurements in the range 20 to 1.5%DEK are reported for the eight paramagnetic garnets with the composition R/sub 3/X/sub 5/O/sub 12/, where R = Gd/sup 3+/, Tb/sup 3+/, Ho/sup 3+/, or Tm/sup 3+/ and X = Al/sup 3+/ or minations of the principal g-values of the ions Nd/sup 3+/, Dy/sup 3+/, Er/sup 3+/ , and Yb/sup 3+/ Lu/sub 3/Ga/sub 5/O/sub 12/. The results are interpreted qualitatively as indicating highly anisotropic and relatively large local crystalline electric fields, and the effect of these on the properties of ferrimagnetic rare earth iron garnets is considered, It is shown that in the ferrimagnetic garnets the rare earth ions will almost always divide into 6 non- collinear sublattices, whose magnetic moments make quite large angles with the two antiparallel iron sublattices. For one case, YbIG, it was possible to make a numerical estimate of the angles of canting. (auth)
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Wolf et al. (1961) studied this question.