Abstract
We observed the growth of unusual Mg nanoblades by oblique angle deposition. Although the vapor flux is obliquely incident, these nanoblades stand vertically on the substrates. The thickness of the Mg nanoblades along the incident vapor direction is reduced to approximately 15 nm to -30 nm at a vapor incident angle approximately 75 degrees, while the width perpendicular to the incident vapor direction is as wide as a few hundred nm. In addition to the anisotropic blade morphology, a (1010) [0001] biaxial (II-O) texture was observed using in situ reflection high energy electron diffraction (RHEED). The tilt angles of the texture axis and the nanoblades are correlated with the high surface diffusion on the (0001) surface along the [2130] direction. We also propose that the observed very thin thickness of the nanoblade along the vapor flux direction is due to the appearance of the surface steps parallel to the [0110] direction and the low surface diffusion on the top surface of the nanoblades.
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