FERROELECTRIC PROPERTIES OF BaBi 4 T i4 O 15  DOPED WITH Pb 2+ , Al 3+ , Ga 3+ , In 3+ , Ta 5+  AURIVILLIUS PHASES

Afifah Rosyidah; Djulia Onggo; Khairurrijal Khairurrijal; Ismunandar Ismunandar

doi:10.22146/ijc.21505

FERROELECTRIC PROPERTIES OF BaBi₄T_i4O₁₅ DOPED WITH Pb²⁺, Al³⁺, Ga³⁺, In³⁺, Ta⁵⁺ AURIVILLIUS PHASES

https://doi.org/10.22146/ijc.21505

Afifah Rosyidah^(1*), Djulia Onggo⁽²⁾, Khairurrijal Khairurrijal⁽³⁾, Ismunandar Ismunandar⁽⁴⁾

(1) Department of Chemistry, Sepuluh Nopember Institute of Technology, Jl. Arif Rahman Hakim, Surabaya, 60111
(2) Inorganic and Physical Chemistry Research Division, Faculty of Mathematics and Natural Sciences, Bandung Institute of Technology, Jl. Ganesa 10 Bandung 40132
(3) Physics of Electronic Materials Research Division, Faculty of Mathematics and Natural Sciences, Bandung Institute of Technology, Jl. Ganesa 10 Bandung 40132
(4) Inorganic and Physical Chemistry Research Division, Faculty of Mathematics and Natural Sciences, Bandung Institute of Technology, Jl. Ganesa 10 Bandung 40132
(*) Corresponding Author

Abstract

In recent years, the ferroelectric properties of aurivillius oxides have attracted interest and an extensive amount of work has been done toward the realization of their potential application in nonvolatile memories (FeRAM: ferroelectric random access memory). Recently, we have carried out computer simulation in atomic scale in order to predict the energies associated with the accommodation of aliovalent and isovalent dopants (Pb²⁺, Al³⁺, Ga³⁺, In³⁺, Ta⁵⁺) in the aurivillius structure of BaBi₄Ti₄O₁₅. In this work, the predicted stable phases were synthesized using solid state reactions and their products then were characterized using powder X-ray diffraction method. The cell parameters were determined using Rietveld refinement in orthorhombic system with space group of A2₁am. Results from the ferroelectric properties measurement of BaBi₄Ti₄O₁₅ were also presented. The cell parameters for BaBi₄Ti₄O₁₅doped with Pb²⁺, Al³⁺, Ga³⁺,In³⁺, Ta⁵⁺were a = 5.47116(4) b = 5.45636(5) c = 41.8649(3) Å; a = 5.47104(4) b = 5.45634(4) c = 41.8640(3) Å; a = 5.47112(4) b = 5.45648(4) c = 41.8643(3) Å; a = 5.47111(4) b = 5.45645(5) c = 41.8649(3) Å; and a = 5.47134(4) b = 5.45588(4) c = 41.8639(5) Å. The ferroelectric properties measurement for BaBi₄Ti₄O₁₅doped with Pb²⁺, Al³⁺, Ga³⁺,In³⁺, Ta⁵⁺showed that the P_r = 15.225 mC/cm², E_c = 33.96 kV/cm; P_r = 15.925 mC/cm², E_c = 35.724 kV/cm; P_r = 16.625 mC/cm², E_c = 36.504 kV/cm; P_r= 15.57 mC/cm², E_c = 32.925 kV/cm; P_r = 17.2827 mC/cm², E_c= 37.44 kV/cm.

Keywords

Aurivillius phase; Rietveld refinement; Ferroelectric properties; BaBi4Ti4O15

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DOI: https://doi.org/10.22146/ijc.21505

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