Study of the Structural, Electrical and Magnetic Properties of Calcium (Ca) and Strontium (Sr) Substituted Barium Titanate (BaTiO3) Ceramics

F. T. Z. Toma; I. N. Esha; Md. Al-Amin; M. N. I. Khan; Kazi Hanium Maria

doi:http://dx.doi.org/

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자료유형: 학술저널

저자정보: F. T. Z. Toma (University of Dhaka) I. N. Esha (University of Dhaka) Md. Al-Amin (University of Dhaka) M. N. I. Khan (Atomic Energy Centre) Kazi Hanium Maria (University of Dhaka)

저널정보: 한양대학교 세라믹공정연구센터 Journal of Ceramic Processing Research Journal of Ceramic Processing Research 제18권 제10호

발행연도: 2017.10

수록면: 701 - 710 (10page)

DOI: http://dx.doi.org/

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The structural, electrical and magnetic properties have been investigated for Ca and Sr substituted Ba1- (Ca0.5Sr0.5)xFe0.5Ti0.5O3(where x = 0.0, 0.1 0.2, 0.3, 0.4) which have been synthesized by a solid state reaction technique and sintered at 1200 oC for 3 hours. In this study BaTiO3 is modified with Fe in lattice B-site. The X-ray diffraction pattern of the prepared samples have indicated single phase cubic perovskite structure. Lattice constant of the samples have decreased with the increasing Ca and Sr contents which follows Vegard’s law. The microstructure of the samples showed that the grain growth rate was greately changed by doping contents. Doping contents have influenced the dielectric constant within the frequency range of 1 kHz to 120 MHz. It is observed that AC resistivities of the prepared samples have been decreased with increasing frequency while DC resistivities have been decreased with increasing temperature confirming the semiconductor behavior of the prepared ceramics. The magnetic hysteresis loops had also been observed by VSM at room temperarure. The initial permeability followed decreasing trend with increasing doping contents.

#XRD #Lattice parameter #Dielectric constant #Resistivity #Permeability #Hysteresis.

참고문헌 (43)

참고문헌 신청

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D. Sun / 2000 / J. Inorg. Mater 15:939~942

D. Sun / 2005 / Appl. Phys. Lett 87:142903

Galasso, S. Francis / 1973 / Inorganic Syntheses 14:142~143

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