Crystallization temperature of amorphous Fe80B20 under pressure

• The resistance of rapidly quenched Fe80B20 was recorded versus T at a rate of 7 K/min and various pressures up to 2.5 GPa. The onset of crystallization, Tx, was defined by extrapolation at the sharp change in resistance associated with crystal growth. The resulting slope of Tx is 15 K/GPa. Separate measurements at atmospheric pressure yielded Tx versus rate of temperature increase, R = dT/dt. Crystallization times from the literature were recalculated to yield Tx, and the results are compared with our data. Nominally amorphous materials of the same composition show markedly different properties. It is also shown that the variation of Tx with R is mostly due to the change in viscosity.

Ämnesord

NATURVETENSKAP  -- Fysik -- Den kondenserade materiens fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Condensed Matter Physics (hsv//eng)

Nyckelord

amorphous metal

crystallization

high pressure

high temperature

Fe80B20

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)