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Characterization Of Bulk, Polycrystalline Indium Nitride Grown At Sub-Atmospheric Pressures

Published online by Cambridge University Press:  10 February 2011

Jeffrey S. Dycka
Affiliation:
physics Dept Case Western Reserve University, Cleveland, OH 44106
Kathleen Kash
Affiliation:
physics Dept Case Western Reserve University, Cleveland, OH 44106
Kwiseon Kim
Affiliation:
physics Dept Case Western Reserve University, Cleveland, OH 44106
Walter R. L Lambrecht
Affiliation:
physics Dept Case Western Reserve University, Cleveland, OH 44106
Cliff C. Hayman
Affiliation:
Chemical Engineering Dept. Case Western Reserve University, Cleveland, OH 44106
Alberto Argoitia
Affiliation:
Chemical Engineering Dept. Case Western Reserve University, Cleveland, OH 44106
Michael T. Grossner
Affiliation:
Chemical Engineering Dept. Case Western Reserve University, Cleveland, OH 44106
Weilie L. Zhouc
Affiliation:
Materials Science and Engineering Dept. Case Western Reserve University, Cleveland, OH 44106
John C. Angus
Affiliation:
Chemical Engineering Dept. Case Western Reserve University, Cleveland, OH 44106
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Abstract

Polycrystalline, wurtzitic indium nitride was synthesized by saturating indium metal with atomic nitrogen from a microwave plasma source. Plasma synthesis avoids the high equilibrium pressures required when molecular nitrogen is used as the nitrogen source. Two types of growth were observed: 1) small amounts of indium nitride crystallized from the melt during cooling and 2) hexagonal platelets formed adjacent to the In metal source on the crucible sides. The mechanism of this latter growth is not established, but may involve transport of indium as a liquid film. The crystals were characterized by electron diffraction, X-ray diffraction, elemental analysis, scanning electron microscopy, and Raman spectroscopy. Lattice parameter and Raman active phonon modes are reported and compared with calculations based on the full-potential linear muffin-tin orbital method (FP-LMTO).

Type
Research Article
Copyright
Copyright © Materials Research Society 1998

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