Abstract
We report experiments on magnetic avalanches in the intermetallic compound ${\text{Gd}}_{5}{\text{Ge}}_{4}$. Kinetics of the avalanches have been studied and compared with the theory of magnetic deflagration. We show that the data fit well into the theoretical framework of deflagration. This adds ${\text{Gd}}_{5}{\text{Ge}}_{4}$ to the growing family of materials (that now includes molecular magnets and manganites) which exhibit this phenomenon. The ``burning'' of the metastable magnetic phase involves a magnetostructural transition alongside the reordering of spins.
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