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Transmission Electron Microscopy Sample Preparation of Ge2Sb2Te5 Nanowire Using Electron Beam

  • Lee, Hee-Sun (Yonsei Institute of Convergence Technology, Yonsei University) ;
  • Lee, Jun-Young (Yonsei Institute of Convergence Technology, Yonsei University) ;
  • Yeo, Jong-Souk (Yonsei Institute of Convergence Technology, Yonsei University)
  • Received : 2015.11.20
  • Accepted : 2015.12.03
  • Published : 2015.12.30

Abstract

A simple and novel transmission electron microscopy (TEM) sample preparation method for phase change nanowire is investigated. A $Ge_2Sb_2Te_5$ (GST) nanowire TEM sample was meticulously prepared using nanomanipulator and gas injection system in a field emission scanning electron microscopy for efficient and accurate TEM analysis. The process can minimize the damage during the TEM sample preparation of the nanowires, thus enabling the crystallographic analysis of as-grown GST nanowires without unexpected phase transition caused by e-beam heating.

Keywords

References

  1. Diercks D, Gorman B, Cheung C L, and Wang G (2009) Techniques for consecutive TEM and atom probe tomography analysis of nanowires. Microsc. Microanal. 15(S2), 254-255. https://doi.org/10.1017/S1431927609093398
  2. Horii H, Yi J, Park J, Ha Y, Baek I, Park S, Hwang Y, Lee S, Kim Y, and Lee K (2003) A novel cell technology using N-doped GeSbTe fi lms for phase change RAM. 2003 Symp. VLSI Technol., Dig. Tech. Pap. 177-178.
  3. Jung Y, Lee S H, Ko D K, and Agarwal R (2006) Synthesis and characterization of Ge2Sb2Te5 nanowires with memory switching effect. J. Am. Chem. Soc. 128, 14026-14027. https://doi.org/10.1021/ja065938s
  4. Lee B S, Abelson J R, Bishop S G, Kang D H, Cheong B K, and Kim K B (2005) Investigation of the optical and electronic properties of Ge2Sb2Te5 phase change material in its amorphous, cubic, and hexagonal phases. J. Appl. Phys. 97, 093509. https://doi.org/10.1063/1.1884248
  5. Lee S H, Jung Y, and Agarwal R (2007) Highly scalable non-volatile and ultra-lowpower phase-change nanowire memory. Nat. Nanotechnol. 2, 626-630. https://doi.org/10.1038/nnano.2007.291
  6. Mayer J, Giannuzzi L A, Kamino T, and Michael J (2007) TEM sample preparation and FIB-induced damage. MRS Bull. 32, 400-407. https://doi.org/10.1557/mrs2007.63
  7. Nam S W, Chung H S, Lo Y C, Qi L, Li J, Lu Y, Johnson A T C, Jung Y W, Nukala P, and Agarwal R (2012) Electrical wind force-driven and dislocation-templated amorphization in phase-change nanowires. Science 336, 1561-1566. https://doi.org/10.1126/science.1220119
  8. Peng Y, Luxmoore I, Forster M, Cullis A, and Inkson B (2008) Nanomanipulation and electrical behaviour of a single gold nanowire using in-situ SEM-FIB-nanomanipulators. J. Phys.: Conf. Ser. 126, 012031. https://doi.org/10.1088/1742-6596/126/1/012031
  9. Raoux S (2009) Phase change materials. Annu. Rev. Mater. Res. 39, 25-48. https://doi.org/10.1146/annurev-matsci-082908-145405
  10. Raoux S and Wuttig M (2010) Phase Change Materials: Science and Applications (Springer Science & Business Media, New York).
  11. Salkar R, Jeevanandam P, Aruna S, Koltypin Y, and Gedanken A (1999) The sonochemical preparation of amorphous silver nanoparticles. J. Mater. Chem. 9, 1333-1335. https://doi.org/10.1039/a900568d
  12. Welnic W, Botti S, Reining L, and Wuttig M (2007) Origin of the optical contrast in phase-change materials. Phys. Rev. Lett. 98, 236403. https://doi.org/10.1103/PhysRevLett.98.236403