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Dielectric Constant and Hysteresis Loop Remanent Polarization from 100 Hz to 2 MHz for Thin Ferroelectric Films

  • K. W. Bennett (a1), P. S. Brody (a1), B. J. Rod (a1), L. P. Cook (a2), P. K. Schenck (a2) and S. Dey (a3)...

Abstract

A modification of the standard Sawyer-Tower circuit method of displaying ferroelectric hysteresis allowed the technique to be extended to sinusoidal switching frequencies of 2 MHz. Using this method, probe station measurements of switched remanent polarization were made for two films: excimer-laser-deposited lead zirconate titanate (PZT) and sol-gel PZT. Switched remanent polarization and dielectric constant were measured as a function of frequency between 100 Hz and 2 MHz and as a function of elapsed switching cycles at the 1-MHz rate. Both films showed decreasing switched remanent polarization and dielectric constant with increasing frequencies. This effect is attributed to limitations in domain wall velocity.

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1. Sawyer, C. B. and Tower, C. H., Phys. Rev. 35 (1930), 269.
2. Brody, P. S., Rod, B. J., Bennett, K. W., Cook, L. P., Schenck, P. K., Vaudin, M. D., Wong-Ng, W., and Chiang, C. K., presentation at 3rd International Symposium on Integrated Ferroelectrics, Colorado Springs, CO, 1991 (to be published in proceedings).
3. Dey, S. K. and Zuleeg, Ranier, Ferroelectrics 108 (1990), 36.
4. Ishibashi, Yoshihiro, J. Phys. Soc. Jpn. 99 (1990), 4148.

Dielectric Constant and Hysteresis Loop Remanent Polarization from 100 Hz to 2 MHz for Thin Ferroelectric Films

  • K. W. Bennett (a1), P. S. Brody (a1), B. J. Rod (a1), L. P. Cook (a2), P. K. Schenck (a2) and S. Dey (a3)...

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