강유전체(K0.5Na0.5)NbO3의 제조 및 전기적 특성 분석
Fabrication and Electrical Propertie of the Ferroelectric (K0.5Na0.5)NbO3
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초록
Ferroelectric ceramics are broadly used for various industrial applications. In this research, the lead-free ferroelectric ceramics of (K0.5Na0.5)NbO3 was fabricated by using the solid state synthesis. The (K0.5Na0.5)NbO3 pellets were sintered at 1200, 1150 and 1100 oC for 4 hours in air atmosphere. Field-emission scanning electron microscopy (FE-SEM) characterization of the sintered KNN ceramics revealed surface morphology and grain size. And we used the X-ray diffraction (XRD) for measuring the sample crystal phase. Temperature dependence of the dielectric constant was measured by using an LCR meter. The sintered at 1150 oC for 4 hours sample has a highest dielectric constant 6011 at Curie temperature (TC) and dense structure with 2.33 μm grain size.
Abstract
Ferroelectric ceramics are broadly used for various industrial applications. In this research, the lead-free ferroelectric ceramics of (K0.5Na0.5)NbO3 was fabricated by using the solid state synthesis. The (K0.5Na0.5)NbO3 pellets were sintered at 1200, 1150 and 1100 oC for 4 hours in air atmosphere. Field-emission scanning electron microscopy (FE-SEM) characterization of the sintered KNN ceramics revealed surface morphology and grain size. And we used the X-ray diffraction (XRD) for measuring the sample crystal phase. Temperature dependence of the dielectric constant was measured by using an LCR meter. The sintered at 1150 oC for 4 hours sample has a highest dielectric constant 6011 at Curie temperature (TC) and dense structure with 2.33 μm grain size.
참고문헌 (20)
- Michihito Ueda, "Battery-less shock-recording device consisting of a piezoelectric sensor and a ferroelectric-gate field-effect transistor", Sensors and Actuators A, 232, pp.75~83 (2015)
- Terence Mittmann, "Optimizing process conditions for improved Hf1-xZrxO2 ferroelectric capacitor performance", Microelectronic Engineering, 178, pp.48~51 (2017)
- Preeti Sharma, "Enhancement in magnetic, piezoelectric and ferroelectric properties on substitution of titanium by iron in barium calcium titanate ceramics", Ceramics International, 42(10), pp.12167~12171 (2016)
- V. V. Sidsky, "La3+-doped SrBi2Ta2O9 thin films for FRAM synthesized by sol-gel method", JOURNAL OF RARE EARTHS, 32(3), pp.277~281 (2014)
- Wei Lin Tan, "An effective constitutive model for polycrystalline ferroelectric ceramics: Theoretical framework and numerical examples", Computational Materials Science, 136, pp.223~237 (2017)
- R. Castañeda-Guzmán, "Structural and piezo-ferroelectric properties of K0.5Na0.5NbO3 thin films grown by pulsed laser deposition and tested as sensors", Thin Solid Films, 636, pp.458~463 (2017)
- Gui-gui Peng, "Effect of rare-earth addition on morphotropic phase boundary and relaxation behavior of the PNN-PZT ceramics", Journal of Alloys and Compounds, 693, pp.1250~1256 (2017)
- L. B. Kong, "Progress in synthesis of ferroelectric ceramic materials via high-energy mechanochemical technique", Progress in Materials Science, 53, pp.207~322 (2008)
- Enwei Sun a, "Relaxor-based ferroelectric single crystals: Growth, domain engineering, characterization and applications", Progress in Materials Science, 65, pp.124~210 (2014)
- Shujun Zhang a, "Advantages and challenges of relaxor-PbTiO3 ferroelectric crystals for electroacoustic transducers - A review", Progress in Materials Science, 68, pp.1~66 (2015)
- T. Takenaka, "Current status and prospects of lead-free piezoelectric ceramics", J. Eur. Ceram. Soc, 25, pp.2693~ (2005)
- L. Egerton, "Piezoelectric and Dielectric Properties of Ceramics in the System Potassium-Sodium Niobate", J. Am. Ceram. Soc, 42, pp.438~ (1959)
- N. M. Hagh, "Propertyprocessing relationship in lead-free (K, Na, Li)NbO3-solid solution system", J. Electroceram, 18, pp.339~ (2007)
- Y. Guo, "(Na0.5K0.5)NbO3–LiTaO3 lead-free piezoelectric ceramics", Materials Letters, 59, pp.241~ (2005)
- S. Zhang, "ead-free piezoelectric ceramics vs. PZT?", J. Electroceram, 19, pp.251~ (2007)
- Y. Guo, "Appl, Phase transitional behavior and piezoelectric properties of (Na0.5K0.5)NbO3-LiNbO3 ceramics", Phys. Lett, 85, pp.4121~ (2004)
- Kumar, "Sonia. Synthesis and characterizations of KNN ferroelectric ceramics", Ceramics International, 39, pp.65~ (2013)
- P. Kumara, "Synthesis and characterizations of KNN ferroelectric ceramicsnear 50", 50 MPB, 2013, pp.39, 65~
- Roopam Gaur, "Effect of Sintering Parameters on the Electrical and the Piezoelectric Properties of Double-calcined (K0.48Na0.48Li0.04) (Nb0.96Sb0.04) O3 Nanopowders", Journal of the Korean Physical Society, 66(5), pp.800~805 (2015), 한국물리학회
- 양범석, "Effects of Sr on the Electrical Properties of PZT Ceramics Prepared by Self-propagating High-temperature Synthesis", 한국세라믹학회지, 45(11), pp.713~718 (2008), 한국세라믹학회