Structural and ferroelectric properties of (K,Na,Li)(Nb,Ta)O3 — CaZrO3 thick films by aerosol deposition

Autor: Dae-Yong Jeong, Soo-Bin Kang, Ji-Ho Lim, Min-Geun Choi, Jungkeun Lee, Hwee-Jong Kim, Young-Min Kong, Jong-Pil Lee, Soohwan Lee
Rok vydání: 2015
Předmět:
Zdroj: Journal of the Korean Physical Society. 66:1101-1105
ISSN: 1976-8524
0374-4884
DOI: 10.3938/jkps.66.1101
Popis: Ferroelectric (1−x)(K0.51Na0.47Li0.02)(Nb0.8Ta0.2)O3 — paraelectric xCaZrO3 solid solution films were deposited on Pt-coated Si substrates by using an aerosol deposition method. The hysteresis and the dielectric properties changed significantly even with small changes in the content of paraelectric CaZrO3. With increasing CaZrO3 content, the ferroelectric phase transformed gradually to a paraelectric phase. With the addition of 3.0 mol% CaZrO3, the dielectric constant was highest; e 33 ~1100 at 1 kHz with a ferroelectric hysteresis loop. Although the 5.0 mol% of CaZrO3 added film revealed a higher remanent polarization, saturated polarization and coercive field than the 3.0 mol% CaZrO3 added film, the former exhibited an asymmetric polarization — electric field hysteresis loop. The X-ray diffraction confirmed that the ferroelectric to paraelectric phase transition occurred at approximately 3.0 mol% CaZrO3.
Databáze: OpenAIRE
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