Abstract
In this work, an idea which applies binary alloy nanocrystal floating gate to nonvolatile memory application was introduced. The relationship between binary alloy’s work function and its composition was discussed theoretically. A nanocrystal floating gate structure with NiFe nanocrystals embedded in SiO2 dielectric layers was fabricated by magnetron sputtering. The micro-structure and composition deviation of the prepared NiFe nanocrystals were also investigated by TEM and EDS.
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Tiwari S, Rana F, Hanafi H, et al. A silicon nanocrystals based memory. Appl Phys Lett, 1996, 68(10): 1377–1379
Liu Z T, Lee C, Narayanan V, et al. Metal nanocrystal memories—Part I: Device design and fabrication. IEEE Trans Electron Devices, 2002, 49(9): 1606–1613
Kapetanakis E, Normand P, Tsoukalas D, et al. Charge storage and interface states effects in Si-nanocrystal memory obtained using low-energy Si+ implantation and annealing. Appl Phys Lett, 2000, 77(21): 3450–3452
Sarkar J, Dey S, Liu Y, et al. Vertical(3-D) flash memory with SiGe nanocrystal floating gate. In: Device Research Conference (IEEE Cat. No. 06TH8896). University Park: IEEE, 2006. 267–268
Wang Q, Song Z T, Liu W L, et al. Synthesis and electron storage characteristics of isolated silver nanodots on/embedded in Al2O3 gate dielectric. Appl Surf Sci, 2004, 230(1–4): 8–11
Yuan C L, Darmawan P, Setiawan Y, et al. Formation of SrTiO3 nanocrystals in amorphous Lu2O3 high-k gate dielectric for floating gate memory application. Appl Phys Lett, 2006, 89(4): 043104
MAO P, ZHANG Z G, PAN L Y, et al. High-density stacked Ru nanocrystals for nonvolatile memory application. Chin Phys Lett, 2009, 26(4): 046102
Michaelson H B. The work function of the elements and its periodicity. J Appl Phys, 1977, 48(11): 4729–4733
Tsui B Y, Huang C F. Wide range work function modulation of binary alloys for MOSFET application. IEEE Electr Device L, 2003, 24(3): 153–155
Fain S C, McDavid J M. Work-function variation with alloy composition: Ag-Au. Phys Rev B, 1974, 9(12): 5099–5107
Ishii R, Matsumura K, Sakai A, et al. Work function of binary alloys. Appl Surf Sci, 2001, 169–170: 658–661
Gelatt C D, Ehrenreich H. Charge transfer in alloys: AgAu. Phys Rev B, 1974, 10(2): 398–415
Kittel C. Introduction to Solid State Physics. 5th ed, New York: Wiley, 1976
Eaglesham D J, Cerullo M. Dislocation-free stranski krastanow growth of Ge on Si(100). Phys Rev Lett, 1990, 64(16): 1943–1946
Wang L, Sun H F, Zhu J, et al. Self-assembly growth and size control of silver nanocrystals for nonvolatile memory applications. Materials Science Forum, 2009, 610–613: 585–590
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Wang, L., Sun, H., Zhou, H. et al. Preparation of NiFe binary alloy nanocrystals for nonvolatile memory applications. Sci. China Technol. Sci. 53, 2320–2322 (2010). https://doi.org/10.1007/s11431-010-4041-1
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DOI: https://doi.org/10.1007/s11431-010-4041-1