Epitaxial germanidation of full-Heusler Co{sub 2}FeGe alloy thin films formed by rapid thermal annealing

Journal Article · Fri Apr 01 00:00:00 EDT 2011 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3562042· OSTI ID:21560114

Takamura, Yota; Sakurai, Takuya; Sugahara, Satoshi ^[1]; Nakane, Ryosho ^[2]; Shuto, Yusuke ^[3]

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1. Department of Electronics and Applied Physics, Tokyo Institute of Technology, Yokohama 226-8503 (Japan)
2. Department of Electrical Engineering and Information Systems, University of Tokyo, Tokyo 113-8656 (Japan)
3. Imaging Science and Engineering Laboratory, Tokyo Institute of Technology, Yokohama 226-8503 (Japan)

The authors demonstrated that a full-Heusler Co{sub 2}FeGe (CFG) alloy thin film was epitaxially grown by rapid-thermal-annealing-induced germanidation of an Fe/Co/pseudo-Ge(001)-on-insulator (GOI) multilayer formed on a Si-on-insulator (SOI) substrate. X-ray diffraction (XRD) measurements with out-of-plane and in-plane configurations revealed that the CFG film was epitaxially grown along the [001] direction with the in-plane epitaxial relation of CFG[100] parallel GOI[100], although the film slightly contained a non-epitaxial component. The strong (111) and (200) superlattice diffraction intensities indicated that the CFG film had a high degree of order for the L2{sub 1} structure. Cross-sectional high-resolution transmission electron microscopy images of the film revealed that the film had dominant epitaxial and slight non-epitaxial components, which was consistent with the XRD measurements. The epitaxial component was grown directly on the buried oxide layer of the SOI substrate without formation of any interfacial layer.

• OSTI ID: 21560114
• Journal Information: Journal of Applied Physics, Vol. 109, Issue 7; Conference: 55. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 14-18 Nov 2010; Other Information: DOI: 10.1063/1.3562042; (c) 2011 American Institute of Physics; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANNEALING
COBALT ALLOYS
CONFIGURATION
FERROMAGNETIC MATERIALS
GERMANIUM ALLOYS
IRON ALLOYS
LAYERS
MOLECULAR BEAM EPITAXY
OXIDES
RESOLUTION
SEMICONDUCTOR MATERIALS
SUBSTRATES
SUPERLATTICES
TERNARY ALLOY SYSTEMS
THIN FILMS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
ALLOY SYSTEMS
ALLOYS
CHALCOGENIDES
COHERENT SCATTERING
CRYSTAL GROWTH METHODS
DIFFRACTION
ELECTRON MICROSCOPY
EPITAXY
FILMS
HEAT TREATMENTS
MAGNETIC MATERIALS
MATERIALS
MICROSCOPY
OXYGEN COMPOUNDS
SCATTERING
TRANSITION ELEMENT ALLOYS