Solid state dendrite formation in an amorphous magnetic Fe 77.5Si13.5B9 alloy observed by in situ hot stage transmission electron microscopy

R. V. Ramanujan; Y. R. Zhang

doi:10.1063/1.2201049

Solid state dendrite formation in an amorphous magnetic Fe _77.5Si_13.5B₉ alloy observed by in situ hot stage transmission electron microscopy

R. V. Ramanujan^*, Y. R. Zhang

^*Corresponding author for this work

Nanyang Technological University

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

Crystallization of an initially amorphous Fe77.5 Si13.5 B9 melt spun alloy was studied by in situ hot stage transmission electron microscopy. The morphology of the crystal was initially equiaxed, followed by a morphological transition to an unusual solid state dendrite morphology. This morphological transition is generally observed after the crystal size reaches a critical value of about 45 nm. The experimental results of dendrite growth and the morphological transition are compared to theoretical predictions.

Original language	English
Article number	182506
Journal	Applied Physics Letters
Volume	88
Issue number	18
DOIs	https://doi.org/10.1063/1.2201049
Publication status	Published - May 1 2006
Externally published	Yes

ASJC Scopus Subject Areas

Physics and Astronomy (miscellaneous)

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abstract = "Crystallization of an initially amorphous Fe77.5 Si13.5 B9 melt spun alloy was studied by in situ hot stage transmission electron microscopy. The morphology of the crystal was initially equiaxed, followed by a morphological transition to an unusual solid state dendrite morphology. This morphological transition is generally observed after the crystal size reaches a critical value of about 45 nm. The experimental results of dendrite growth and the morphological transition are compared to theoretical predictions.",

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AB - Crystallization of an initially amorphous Fe77.5 Si13.5 B9 melt spun alloy was studied by in situ hot stage transmission electron microscopy. The morphology of the crystal was initially equiaxed, followed by a morphological transition to an unusual solid state dendrite morphology. This morphological transition is generally observed after the crystal size reaches a critical value of about 45 nm. The experimental results of dendrite growth and the morphological transition are compared to theoretical predictions.

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Solid state dendrite formation in an amorphous magnetic Fe _77.5Si_13.5B₉ alloy observed by in situ hot stage transmission electron microscopy

Abstract

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