Phase, microstructure and dielectric properties of 0.94Bi0.5Na0.5TiO3-0.06BaTiO3 ceramics prepared by sol-gel technique

• Autorzy: Uddin S. , Iqbal Y. , Ullah A.
• Języki publikacji: EN

Abstrakty

EN

0.94Bi0.5Na0.5TiO3-0.06BaTiO3 ceramics were fabricated by sol-gel technique. The XRD results revealed the formation of a single phase perovskite structured Bi0.5Na0.5TiO3-BaTiO3 at 600 °C. The SEM images showed dense microstructure and the optimum density of the ceramics sintered at 1100 °C was 5.2 g/cm3. The saturation polarization (P s ) was found to be increased with increasing temperature while the remnant polarization (P r ) was found to be increased gradually and then decreased abruptly near 85 °C, which could be attributed to the phase transformation. The coercive electric field (E c ) was found to be decreased gradually with increasing temperature. The maximum value of dielectric constant (ɛ r ) at room temperature was 800 and dielectric loss at 1 MHz was 0.07.

Słowa kluczowe

EN

lead free; perovskite; sol-gel; FTIR; ferroelectrics

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2013
• Tom: Vol. 31, No. 3
• Strony: 410--414
• Opis fizyczny: Bibliogr. 15 poz., rys., tab., wykr.

Twórcy

autor

Uddin S.

• Materials Research Laboratory, Institute of Physics and Electronics, University of Peshawar, Peshawar 25120, Pakistan

autor

Iqbal Y.

• Materials Research Laboratory, Institute of Physics and Electronics, University of Peshawar, Peshawar 25120, Pakistan

autor

Ullah A.

• National Centre of Excellence in Physical Chemistry, University of Peshawar, Peshawar 25120, Pakistan

Bibliografia

• [1] SMOLENSKII G. A., ISUPOV V. A., AGRANOVSKAYA A. I., KRAINIK N. N., Sov. Phys.-Solid State (Engl. Transl.), 2 (11) (1961), 2651.
• [2] HAGIYEV M. S., ISMAIZADE I. H., ABIYEV A. K., Ferroelectrics, 56 (1984), 215.
• [3] SUCHANICZ J., ROLEDER K., KANIA A., HANDEREK J., Ferroelectrics, 77 (1988), 107.
• [4] ZVIRGZDS J. V., KAPOSTINS P. P., ZVIRGZDE J. V., KRUZINA T. V., Ferroelectrics, 40 (1982), 75.
• [5] WANG X. X., TANG X. G., CHAN H. L. W., CHOY C. L., J. Appl. Phys. (A), 80 (2005), 333.
• [6] TAKENAKA T., MARUYAMA K. I., SAKATA K., Jpn. J. Appl. Phys., 30 (9B) (1991), 2236.
• [7] SASAKI A., CHIBA T., MAMIYA Y., OTSUKI E., Jpn. J. Appl. Phys., 38 (9B) (1999), 5564.
• [8] SAKATA K., TAKENAKA T., NAITOU Y., Ferroelectrics, 131 (1992), 219.
• [9] NAGATA H., KOIZUMI N., TAKENAKA T., Key Eng. Mater., 37 (1999), 169.
• [10] WANG X. X., CHAN H. L. W., CHOY C. L., J. Am. Ceram. Soc., 86 (10) (2003), 1809.
• [11] NAGATA H., YOSHIDA M., MAKIUCHI Y., TAKENAKA T., J. Appl. Phys., 42 (12) (2003), 7401.
• [12] MOULSON A. J., HERBERT J. M., Electroceramics, Chapman and Hall, London, (1990), 71.
• [13] ZHANG S. T., KOUNGA A B., AULBACH E., DENG Y., J. Am. Ceram. Soc., 91 [12] (2008), 3950.
• [14] BAI Y., ZHENG G. P., SHI S. Q., Materials Research Bulletin, 46 (2011), 1866.
• [15] CERNEA M., ANDRONESCU A., RADU R., FOCHI F., GALASSI C., J. Allo. And Comp., 490 (2010), 690.