Reliability of Ba(Zr0.1Ti0.9)O3 Ferroelectric Thin Films under Various Frequencies for Nonvolatile Memory Application

Abstract:

Article Preview

In this study, ferroelectric thin films of Ba(Zr0.1Ti0.9)O3 were successfully deposited on Pt/Ti/SiO2/Si substrate under the optimal rf magnetron sputtering parameters, and their electrical and ferroelectric characteristics were investigated. The MFMIS structure of Al/Ba(Zr0.1Ti0.9)O3/ Pt/Ti/SiO2/Si was proposed in order to be applied as NDRO FRAM applications. From the experimental results obtained, the dielectric constant and the leakage current density of BZT films were about 200 and 1×10-9A/cm2, respectively, under the electrical field of 1 MV/cm. Besides, the saturation polarization and coercive field of Ba(Zr0.1Ti0.9)O3 films were found to be 4 μC/cm2 and 25 kV/cm, respectively, as the frequency of 103 Hz was applied. The variations of saturation polarization and coercive filed of films under various frequencies ranging form 102 to 106 Hz were also discussed.

Info:

Periodical:

Key Engineering Materials (Volumes 336-338)

Edited by:

Wei Pan and Jianghong Gong

Pages:

73-75

DOI:

10.4028/www.scientific.net/KEM.336-338.73

Citation:

K. H. Chen et al., "Reliability of Ba(Zr0.1Ti0.9)O3 Ferroelectric Thin Films under Various Frequencies for Nonvolatile Memory Application", Key Engineering Materials, Vols. 336-338, pp. 73-75, 2007

Online since:

April 2007

Export:

Price:

$35.00

[1] S. Y. Wu: IEEE Trans. Electron Devices ED-21, (1974), p.499.

[2] S. Y. Wu: Ferroelectrics Vol. 11 (1976), p.379.

[3] H. Buhay, S. Sinharoy, W. H. Kasner, M. H. Francombe, D. R. Lampe and E. Stepke: Appl. Phys. Lett. Vol. 58 (1991), p.1470.

[4] S. R. Shannigrahi and H. M. Jang: Appl. Phys. Lett. Vol. 79 (2001), p.1051.

[5] S. K. Hong, C. W. Suh, C. G. Lee, S. W. Lee, E. Y. Hang and N. S. Kang: Appl. Phys. Lett. Vol. 77 (2000), p.76.

[6] S. B. Xiong and S. Sakai: Appl. Phys. Lett. Vol. 75 (1999), p.1613.

[7] J. S. Kim and S. G. Yoon: J. Vac. Soc. Technol. B Vol. 18 (2000), p.216.

[8] T. B Wu, C. M. Wu and M. L. Chen: Appl. Phys. Lett. Vol. 69 (1996), p.2659. Fig. 4. The variations of saturation polarization and coercive field of BZT films with different frequency.

In order to see related information, you need to Login.