No abstract

Amorphous Fe87B11Au2 ribbons that are stable above 300 K displayed saturation magnetization Ms of 223 emu/g at 4.2 K. The deduced average Fe atomic moment μ̄Fe was 2.46 μB, which is relatively high compared to μ̄Fe=2.13 μB in Fe87B13. The higher Fe moment is attributed to a quenched-in, high-volume Fe lattice (similar to that found in amorphous Fe-Au films) stabilized by Au and B atoms. Upon annealing, three crystallization stages were observed. First, a α-Fe phase with about 3 at.% Au emerged at around 620 K followed by a Fe2B phase at ≊745 K. At ≊790 K, a Au-rich phase emerged. There were decreases in Ms (4.2 K) as the isothermal annealing temperature was increased, with the largest decrease coinciding with the precipitation of Fe2B.

No abstract

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ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.