Abstract
The saturation magnetization (M s) and the initial magnetic susceptibility (χ in) of substituted yttrium iron garnet (YIG) Ho3−x Y x Fe5O12 where (x=0,0.3,1.5), pure terbium iron garnet Tb3Fe5O12, and substituted aluminum iron garnet (AlIG) Ho3Fe5−x Al x O12 where (x=0.05,0.7) at room temperature are reported. It has been observed that M s and χ in decrease in a linear manner as Ho3+ replaces Y3+ in yttrium iron garnet. For substituted (AlIG), a drastic decrease in both M s and χ in as Al3+ ions replace Fe3+ ions. The rate of decrease of M s and χ in with the increase of Al3+ for substituted (AlIG) is greater than that for substituted (YIG). That is attributed to the decrease in the superexchange interaction (self and mutual iron interactions) with Al substitution.
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Lataifeh, M.S. Room temperature magnetization measurements of some substituted rare earth iron garnets. Appl. Phys. A 92, 681–685 (2008). https://doi.org/10.1007/s00339-008-4616-x
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DOI: https://doi.org/10.1007/s00339-008-4616-x