Growth and ferroelectric properties of Bi2VO5.5 thin films with metallic LaNiO3 electrodes
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- K. V. R. Prasad
- Materials Research Center, Indian Institute of Science, Bangalore 560012, India
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- K. B. R. Varma
- Materials Research Center, Indian Institute of Science, Bangalore 560012, India
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- A. R. Raju
- Materials Research Center, Indian Institute of Science, Bangalore 560012, India
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- K. M. Satyalakshmi
- Department of Metallurgy, Indian Institute of Science, Bangalore 650012, India
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- R. M. Mallya
- Department of Metallurgy, Indian Institute of Science, Bangalore 650012, India
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- M. S. Hegde
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012, India
説明
<jats:p>Novel ferroelectric bismuth vanadate, Bi2VO5.5 (BVO), thin films have been grown between lattice matched metallic LaNiO3 (LNO) layers deposited on SrTiO3 (STO) by the pulsed laser deposition technique. LNO/BVO/LNO/STO and Au/BVO/LNO/STO trilayer structures exhibited c-oriented (001) growth of BVO. LNO has been found to be a good metallic electrode with sheet resistance ∼20 Ω in addition to aiding c-axis oriented BVO growth. The dielectric constant, εr of LNO/BVO/LNO/STO, at 300 K was about 12. However, when an Au electrode was used on top of BVO/LNO/STO film, it showed a significant improvement in the dielectric constant (εr=123). The ferroelectric properties of BVO thin films have been confirmed by hysteresis behavior with a remnant polarization, Pr=4.6×10−8 C/cm2 and coercive field, Ec=23 kV/cm at 300 K.</jats:p>
収録刊行物
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- Applied Physics Letters
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Applied Physics Letters 63 (14), 1898-1900, 1993-10-04
AIP Publishing
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詳細情報 詳細情報について
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- CRID
- 1363951795788098048
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- DOI
- 10.1063/1.110641
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- ISSN
- 10773118
- 00036951
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