Physics – Condensed Matter – Materials Science
Scientific paper
2010-12-09
J. Appl. Phys. vol. 109, no. 7, pp. 07B768/1-3, 2011
Physics
Condensed Matter
Materials Science
16 pages, 4 figures
Scientific paper
10.1063/1.3562042
The authors demonstrated that a full-Heusler Co2FeGe (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 the 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]||GOI[100], although the film slightly contained a texture component. The strong (111) and (200) superlattice diffraction intensities indicated that the CFG film had a high degree of order for the L21 structure. Cross-sectional high-resolution transmission electron microscopy images of the film implied that the film had the dominant epitaxial and slight texture components, which was consistent with the XRD measurements. The epitaxial component was grown directly on the BOX layer of the SOI substrate without the formation of any interfacial layer.
Nakane Ryosho
Sakurai Takuya
Shuto Yusuke
Sugahara Satoshi
Takamura Yota
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