Room temperature magnetization measurements of some substituted rare earth iron garnets |
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Authors: | Mahdi S Lataifeh |
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Institution: | (1) Department of Physics, Mu’tah University, 61710 Mu’tah, Jordan |
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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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Keywords: | PACS" target="_blank">PACS 71 20 Eh 71 55 Ak 75 20 Eh 75 30 Cr 75 30 Sg |
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