Giant Polarization Properties of Ba-Based Bismuth Layer-Structured Ferroelectrics

Abstract:

Intergrowth-structured Bi4Ti3O12-BaBi4Ti4O15 (BiT-BBTi) single crystals were grown by a self-flux method, and the crystal structure and polarization properties were investigated. Transmission electron microscope observations and X-ray diffraction analysis presented direct evidence of the intergrowth structure composed of the alternate stacking of BiT and BBTi layers. The BiT-BBTi crystals showed a giant spontaneous polarization (Ps) along the a axis of 52 μC/cm2, which was larger than those of the crystals of BiT (46 μC/cm2) and BBTi (16 μC/cm2). The large Ps of the BiT-BBTi crystals is suggested to originate from the ferroelectric displacements of the Bi of Bi2O2 layers as well as from the Bi substitution for Ba induced by compositional deviation. It was found that the polarization properties of the BiT-BBTi crystals depend strongly on the composition.

• Periodical: Key Engineering Materials (Volume 301)
• Pages: 3-6
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.301.3
• Online since: January 2006
• Authors: Tomo Kobayashi, Yuji Noguchi, Masaru Miyayama
• Keywords: Barium, Bismuth Layer Structured Ferroelectrics, Intergrowth Structure, Lattice Distortion, Single Crystal

References

[1] C. A. P. de Araujo, J. D. Cuchiaro, L. D. McMillan, M. C. Scott and J. F. Scott, Nature, 374 (1995), p.627.

[2] B. H. Park, B. S. Kang, S. D. Bu, T. W. Noh, J. Lee and W. Joe, Nature, 401 (1999) , p.682.

[3] S. B. Desu and D. P. Vijay, Mater. Sci. Eng. B., 32 (1995), p.75.

[4] O. Auciello, A. R. Krauss, J. Im, D. M. Gruen, E. A. Irene, R. P. H. Chang and G. E. McGuire, Appl. Phys. Lett., 69 (1996) , p.2671.

[5] T. Kikuchi, J. Less-Common Met., 48 (1976), p.319.

[6] T. Kikuchi, A. Watanabe and K. Uchida, Mater. Res. Bull., 12 (1977), p.299.

[7] Y. Noguchi, M. Miyayama and T. Kudo, Appl. Phys. Lett., 77 (2000), p.3639.

[8] A. Shibuya, M. Noda, M. Okuyama, H. Fujisawa and M. Shimizu, Appl. Phys. Lett., 82 (2003), p.784.

[9] R. Maalal, R. Muhll, G. Trolliard and J. -P. Mercurio, J. Phys. Chem. Solids, 57 (1996) , p. (1957).

[10] Y. Goshima, Y. Noguchi and M. Miyayama, Appl. Phys. Lett., 81 (2002), p.2226.

[11] T. Kobayashi, Y. Noguchi and M. Miyayama, Jpn. J. Appl. Phys., 43 (2004), p.6653.

[12] S. E. Cummins and L. E. Cross, J. Appl. Phys., 39 (1968) , p.2268.

[13] H. Irie, M. Miyayama and T. Kudo, Jpn. J. Appl. Phys., 40 (2001), p.239.

[14] Y. Noguchi, R. Satoh, M. Miyayama and T. Kudo, J. Ceram. Soc. Jpn., 109 (2001), p.29.

[15] Y. Noguchi, Y. Goshima and M. Miyayama, Trans. Mater. Res. Soc. Jpn., 28 (2003), p.113.