Enhancement of remanent polarization in epitaxial BaTiO3/SrTiO3 superlattices with "asymmetric" structure
J. Appl. Phys. 91, 2290 (2002); doi:10.1063/1.1434547
Issue Date: 15 February 2002
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Enhancement of remanent polarization has been demonstrated in epitaxial "asymmetric" BaTiO3/SrTiO3 strained superlattices, in which the thickness ratio of BaTiO3 to SrTiO3 layers is changed at molecular layer order accuracy. The superlattices have been prepared on Nb-doped SrTiO3 (100) single-crystal substrates by a pulsed-laser deposition technique. The superlattice with a stacking periodicity of 15 unit cells BaTiO3/3 unit cells SrTiO3 shows the largest remanent polarization 2Pr of 46 µC/cm2, which is about three times that of the BaTiO3 single-phase film formed under the same condition. The increase in the remanent polarization is attributed both to the BaTiO3-rich structure and to the increase in lattice parameter c due to the mismatch of in-plane lattice parameters between BaTiO3 and SrTiO3. ©2002 American Institute of Physics.
| History: | Received 28 June 2001; accepted 19 November 2001 |
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http://link.aip.org/link/?JAPIAU/91/2290/1 |
KEYWORDS and PACS
barium compounds,
strontium compounds,
superlattices,
dielectric polarisation,
lattice constants,
ferroelectric ceramics,
ferroelectric thin films,
epitaxial layers
- 77.22.Ej
Dielectrics, piezoelectrics, and ferroelectrics and their properties Dielectric properties of solids and liquids Polarization and depolarization - 77.84.Dy
Dielectrics, piezoelectrics, and ferroelectrics and their properties Dielectric, piezoelectric, ferroelectric, and antiferroelectric materials Niobates, titanates, tantalates, PZT ceramics, etc. - 81.05.Je
Materials science Specific materials: fabrication, treatment, testing and analysis Ceramics and refractories (including borides, carbides, hydrides, nitrides, oxides, and silicides) - 77.55.+f
Dielectrics, piezoelectrics, and ferroelectrics and their properties Dielectric thin films - 68.65.Cd
Surfaces and interfaces; thin films and low-dimensional systems (structure and nonelectronic properties) Low-dimensional, mesoscopic, and nanoscale systems: structure and nonelectronic properties Superlattices - 77.80.-e
Dielectrics, piezoelectrics, and ferroelectrics and their properties Ferroelectricity and antiferroelectricity - YEAR: 2002
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PUBLICATION DATA
0021-8979 (print)
1089-7550 (online)
REFERENCES (15)
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- K. Kämmer, B. Holzapfel, H. Hülz, W. Hässler, and L. Schultz,
Ferroelectrics 201, 65 (1997) . - T. Tsurumi, S. Mitarai, S.-M. Nam, Y. Ishibashi, and O. Fukunaga, Proceedings of the 10th International IEEE Symposium on Appl. Ferroelectrics (1996), Vol. 1, p. 499 (unpublished).
- Y. Yano, K. Iijima, Y. Daitoh, T. Terashima, Y. Bando, Y. Watanabe, H. Kasatani, and H. Tarauchi, J. Appl. Phys. 76, 7833 (1994).
- T. Shimizu and T. Kawakubo,
Jpn. J. Appl. Phys., Part 2 37, L235 (1998) . - Y. Yoneda, T. Okabe, K. Sakaue, H. Terauchi, H. Kasatani, and K. Deguchi, J. Appl. Phys. 83, 2458 (1998).
- K. Abe, N. Yanase, S. Komatsu, K. Sano, N. Fukushima, and T. Kawakubo,
IEICE Trans. Electron. E81-C, 505 (1998) . - T. Kawakubo, S. Komatsu, K. Abe, K. Sano, N. Yanase, and N. Fukushima,
Jpn. J. Appl. Phys., Part 1 37, 5108 (1998) . - K. Abe and S. Komatsu, J. Appl. Phys. 77, 6461 (1995).
- H. Tabata, H. Tanaka, and T. Kawai, Appl. Phys. Lett. 65, 1970 (1994).
- O. Nakagawara, T. Shimuta, T. Makino, and S. Arai, Appl. Phys. Lett. 77, 3257 (2000).
- H. Tabata and T. Kawai, Appl. Phys. Lett. 70, 321 (1997).
- G.-Z. Yang, H.-B. Lu, Y.-L. Zhou, Z.-L. Lei, and Z.-H. Chen, Acta Phys. Sin. 7, 623 (1998).
- K. Iijima, T. Terashima, Y. Bando, K. Kamigaki, and H. Tarauchi, J. Appl. Phys. 72, 2840 (1992).
- Z. Wang, T. Yasuda, S. Hatatani, and S. Oda, Proceedings of the Electrochemical Society of Honolulu Meeting, Abstract No. 1054 (1999) (unpublished).
- M. Kawasaki, K. Takahashi, T. Maeda, R. Tsuchiya, M. Shinohara, O. Ishiyama, T. Yonezawa, M. Yoshimoto, and H. Koinuma,
Science 266, 1540 (1994) .







