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DOI: 10.1039/A806275G (Paper) Reference Section for: J. Mater. Chem., 1998, 8, 2317-2319

Preparation of SrBi2Ta2O9 thin films with a single alkoxide sol–gel precursor

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Yongtae Kim, Hee K. Chae, Kyu S. Lee and Wan I. Lee

Abstract

For the first time, a single alkoxide sol–gel precursor solution for the ferroelectric strontium bismuth tantalate (SrBi2Ta2O9, SBT) was synthesized and utilized for the fabrication of its thin films. The precursor was prepared from a 2-methoxyethanol solution of Sr(OCH2CH2OCH3)2, Bi(OCH2CH2OCH3)3, and Ta(OCH2CH2OCH3)5. 1H and 13C NMR spectra of the precursor in benzene show only one set of alkoxy groups, indicating the same chemical environment in solution. This observation suggests that it is a single sol–gel precursor, which is ideal for the sol–gel processing of SBT thin films. The SBT films derived from this precursor present outstanding ferroelectric properties and surface morphology.

References

  1. C. D. Chandler, C. Roger and M. J. Hampden-Smith, Chem. Rev., 1993, 93, 1205 CrossRef CAS.
  2. R. C. Mehrotra, A. Singh and S. Sogiani, Chem. Rev., 1994, 94, 1643 CrossRef CAS.
  3. C. A. Araujo, J. D. Cuchiaro, L. D. McMillan, M. C. Scott and J. F. Scott, Nature, 1995, 374, 627 CrossRef.
  4. H.-M. Tsai, P. Lin and T.-Y. Tseng, Appl. Phys. Lett., 1998, 72, 1787 CrossRef CAS.
  5. T. Li, Y. Zhu, S. B. Desu, C.-H. Peng and M. Nagata, Appl. Phys. Lett., 1996, 68, 616 CrossRef CAS.
  6. H. Tabata, H. Tanaka and T. Kawai, Jpn. J. Appl. Phys., 1995, 34, 5146 CrossRef CAS.
  7. K. Amanuma, T. Hase and Y. Miyasaka, Appl. Phys. Lett., 1995, 66, 221 CrossRef CAS.
  8. I. Koiwa, T. Kanehara, J. Mita, T. Iwabuchi, T. Osaka, S. Ono and M. Maeda, Jpn. J. Appl. Phys., 1996, 35, 4946 CrossRef CAS.
  9. T. Hayashi, T. Hara and H. Takahashi, Jpn. J. Appl. Phys., 1997, 36, 5900 CrossRef CAS.
  10. IR (Nujol mull, cm–1): 1235 w, 1197 w, 1126 w, 1061 w, 1019 w, 964 w, 894 w, 834 w, 559 w. 1H NMR (C6D6): δ 4.98 (t, 6 H, CH2, JH–H= 4.5 Hz), 3.53 (t, 6 H, CH2, JH–H= 4.6 Hz), 3.25 (s, 9 H, CH3). 13C NMR (C6D6): δ 77.75 (s, CH2), 62.45 (s, CH2), 58.17 (s, CH3).
  11. 1H NMR (C6D6): δ 4.78 (br, 10 H, CH2), 3.61 (br, 10 H, CH2), 3.27 (s, 15 H, CH3). 13C NMR (C6D6): δ 75.61 (s, CH2), 71.18 (s, CH2), 58.47 (s, CH3).
  12. 1H NMR (C6D6): δ 4.27 (br, 4 H, CH2), 3.63 (br, 4 H, CH2), 3.39 (s, 6 H, CH3). 13C NMR (C6D6): δ 79.19 (s, CH2), 63.08 (s, CH2), 58.66 (s, CH3).
  13. Anal calc. for C54H126O36SrBi2Ta2: C, 29.23; H, 5.72; Sr, 3.95; Bi, 18.84; Ta, 16.30. Found: C, 28.95; H, 5.75; Sr, 3.71; Bi, 17.93; Ta, 15.45%. 1H NMR (C6D6): δ 4.65 (t, 36 H, CH2), 3.52 (t, 36 H, CH2), 3.38 (s, 54 H, CH3). 13C NMR (C6D6): δ 76.00 (s, CH2), 68.54 (s, CH2), 58.84 (s, CH3).
  14. T.-C. Chen, T. Li, X. Zhang and S. B. Desu, J. Mater. Res., 1997, 12, 1569 CAS.
  15. I. Koiwa, Y. Okada, J. Mita, A. Hashimoto and Y. Sawada, Jpn. J. Appl. Phys., 1997, 36, 5904 CrossRef CAS.
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