Abstract
A relatively simple and more economical process of open die hot pressing has been employed in preparing high density yttrium iron garnet samples of fine grain size (∼ 1–2 μM). The samples have been investigated for the microstructure dependent spinwave line-width (ΔH k) and FMR line-width (ΔH). The values of ΔH k and ΔH are in fair agreement with the samples having the same grain size but prepared by the conventional hot pressing using refractory dies.
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