Overlayer-induced anisotropic alignment of Nd[sub 2]Fe[sub 14]B nanograins

Shima, T.; Kamegawa, A.; Hono, K.; Fujimori, H.
April 2001
Applied Physics Letters;4/2/2001, Vol. 78 Issue 14, p2049
Academic Journal
Highly anisotropic Nd[sub 2]Fe[sub 14]B thin film has been produced by triggering crystallization of sputter-deposited amorphous Nd-Fe-B layer by deposition of crystalline Cr overlayer. A downward growth of strongly textured Nd[sub 2]Fe[sub 14]B columnar grains was observed, starting from the interface between the Nd-Fe-B amorphous layer and the Cr overlayer. Cross-sectional transmission electron microscope observation results suggest that the possible mechanism of this peculiar crystallization is the heterogeneous nucleation at the surface of Nd-Fe-B amorphous layer, triggered by the crystalline Cr overlayer. © 2001 American Institute of Physics.


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