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Combinatorial Synthesis and Characterization of CoMnGe Alloys

Published online by Cambridge University Press:  17 March 2011

Frank Tsui ,
Liang He  and
Lei Ma
Frank Tsui
Affiliation:
Email: [email protected]
Liang He
Affiliation:
Dept. of Physics and Astronomy, University of North Carolina, Chapel Hill, NC 27599, U.S.A.
Lei Ma
Affiliation:
Dept. of Physics and Astronomy, University of North Carolina, Chapel Hill, NC 27599, U.S.A.
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Abstract

Ternary alloys of CoMnGe have been synthesized and characterized using combinatorial molecular beam epitaxy techniques. Structural evolution was studied using real-time scanning reflection high-energy electron diffraction, and magnetic properties were probed using magnetooptic Kerr effect imaging and SQUID magnetometry. Growth and properties on several substrate orientations were explored. These alloys exhibit a rich variety of magnetic and magnetooptic behavior, including a robust phase near Co2MnGe with high spin polarization, Tc, and magnetooptic response. The observed magnetic responses show strong correlation with structural transformations, such that structural ordering leads to enhanced magnetism. The observed magnetic behavior and the alloys’ compatibility with Ge and Si substrates make them potential candidates for spin electronic transport studies and applications.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 700: Symposium S – Combinatorial and Artificial Intelligence Methods in Materials Science , 2001 , S2.2
Copyright
Copyright © Materials Research Society 2002

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