Proceedings of the 2015 International Symposium on Material, Energy and Environment Engineering 2015
DOI: 10.2991/ism3e-15.2015.43
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Study on the Textured CaBi4Ti4O15 Ceramics with Sc Modification

Abstract: Abstract. Sc 3+ doped textured lead-free ceramics of CaBi 4-x Sc x Ti 4 O 15 (CBScT) were prepared by oriented consolidation of anisometric particle method with tape casting while the plate-like powders were produced by MMS method. The higher dielectric constant and lower dielectric loss were obtained as the x=0.2. The relationship between dielectric and ferroelectric properties were discussed. Within the optimal Sc doping content, the measured ε r , tanδ, Pr and T C are 165, 1.8%, 8 μC/cm 2 and 700 o C, repec… Show more

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“…Studi kristalografi telah menunjukkan peran penting pendopingan kation disitus-A untuk sifat feroelektrik karena jari-jari ion kation disitus-A akan mempengaruhi suhu transisi feroelektrikparaelektrik (Tc). Selain perbedaan jari-jari kation, kemiringan dari struktur oktahedra BO6 juga mempengaruhi struktur dan sifat ferroelektrik senyawa Aurivillius [14] .…”
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“…Studi kristalografi telah menunjukkan peran penting pendopingan kation disitus-A untuk sifat feroelektrik karena jari-jari ion kation disitus-A akan mempengaruhi suhu transisi feroelektrikparaelektrik (Tc). Selain perbedaan jari-jari kation, kemiringan dari struktur oktahedra BO6 juga mempengaruhi struktur dan sifat ferroelektrik senyawa Aurivillius [14] .…”
unclassified
“…Calcium bismuth titanate, CaBi4Ti4O15 (CBT) merupakan senyawa Aurivillius berlapis empat [15], [16] . Ion Ca 2+ berada pada situs-A dan ion Ti 4+ pada situs-B dalam struktur perovskit (CaBi2)Ti4O13) 2-[3][5][6] [9] yang memiliki sifat ferroelektrik dengan space group A21am [14] , suhu Curie (Tc) 790°C, dielectric loss yang rendah [15] dan koefesien piezoelektrik yang tinggi [17] . Sintesis CBT menggunakan metode mechanical activation pada suhu ruangan dengan atmosfer nitrogen menghasilkan suhu Curie (Tc) 774°C dengan konstanta dielektrik maksimum () pada nilai 1094 [18] .…”
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