Synthesis and electrical characterization of Ca2Nd4Ti6O20 ceramics

• Autorzy: Muhammad R. , Uzair M. , Iqbal M. J. , Khan M. J. , Iqbal Y. , Rambo C. R.

Identyfikatory

DOI

10.1515/msp-2016-0021

• Języki publikacji: EN

Abstrakty

EN

Ca₂Nd₄Ti₆O₂₀, a layered perovskite structured material was synthesized via a chemical (citrate sol-gel) route for the first time using nitrates and alkoxide precursors. Phase analysis of a sample sintered at 1625 degrees C revealed the formation of an orthorhombic (Pbn21) symmetry. The microstructure of the sample after sintering comprised rod-shaped grains of a size of 1.5 to 6.5 μm. The room temperature dielectric constant of the sintered sample was 38 at 100 kHz. The remnant polarization (P_r) and the coercive field (E_c) were about 400 μC/cm² and 8.4 kV/cm, respectively. Impedance spectroscopy revealed that the capacitance (13.7 pF) and activation energy (1.39 eV) of the grain boundary was greater than the capacitance (5.7 pF) and activation energy (1.13 eV) of the grain.

Słowa kluczowe

EN

sol-gel; Ca2Nd4Ti6O20; electrical properties

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2016
• Tom: Vol. 34, No. 1
• Strony: 164--168
• Opis fizyczny: Bibliogr. 17 poz., rys., tab.

Twórcy

autor

Muhammad R.

• Department of Physics, Islamia College Peshawar, 25120, Khyber Pakhtunkhwa, Pakistan
• Laboratory of Electrical Materials, Federal University of Santa Catarina, Florianopolis, Brazil

autor

Uzair M.

• Department of Physics, University of Peshawar, 25120, Khyber Pakhtunkhwa, Pakistan

autor

Iqbal M. J.

• Department of Physics, University of Peshawar, 25120, Khyber Pakhtunkhwa, Pakistan

autor

Khan M. J.

• Department of Physics, University of Peshawar, 25120, Khyber Pakhtunkhwa, Pakistan

autor

Iqbal Y.

• Department of Physics, University of Peshawar, 25120, Khyber Pakhtunkhwa, Pakistan

autor

Rambo C. R.

• Laboratory of Electrical Materials, Federal University of Santa Catarina, Florianopolis, Brazil

Bibliografia

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.