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Growth Behavior and Electrical Properties of a (Na0.5K0.5) NbO3 Thin Film Deposited on a Pt/Ti/SiO2/Si Substrate Using RF Magnetron Sputtering
- Authors
- Kang, Lee-Seung; Kim, Bo-Yun; Seo, In-Tae; Seong, Tae-Geun; Kim, Jin-Seong; Sun, Jong-Woo; Paik, Dong-Soo; Hwang, Inrok; Park, Bae Ho; Nahm, Sahn
- Issue Date
- Jul-2011
- Publisher
- WILEY
- Citation
- JOURNAL OF THE AMERICAN CERAMIC SOCIETY, v.94, no.7, pp.1970 - 1973
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF THE AMERICAN CERAMIC SOCIETY
- Volume
- 94
- Number
- 7
- Start Page
- 1970
- End Page
- 1973
- ISSN
- 0002-7820
- Abstract
- A crystalline (Na0.5K0.5) NbO3 (NKN) phase was formed for a film grown at 600 degrees C, but a K5.75Nb10.85O30 (KN) second phase was also observed in this film. Formation of the KN phase was due to the evaporation of Na2O. A homogeneous NKN phase was developed in the film grown at 300 degrees C and annealed at 800 degrees C under a Na2O atmosphere. This film exhibited the following good electric and dielectric properties: a high dielectric constant of 237.4 with a dissipation factor of 0.93% at 100 kHz, a low leakage current density of 1.0 x 10(-8) A/cm(2) at 0.1 MV/cm(2), and the high P-r and d(33) values of 21.1 mu C/cm(2) and 64.5 pm/V, respectively.
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