Effect of the substitution of calcium by potassium on the dielectric properties in La0.7Ca0.3−xKxMnO3 compounds

Author

Dhahri, Radhia ; Hajlaoui, Mohsen ; Bejar, Moez ; Costa, Luis ; Hlil, El Kébir ; Dhahri, Essebti

Author_Institution

Lab. de Phys. Appl., Fac. des Sci. de Sfax, Sfax

fYear

2008

fDate

11-13 Dec. 2008

Firstpage

1

Lastpage

4

Abstract

Impedance spectroscopy measurements were performed to examine the effect of substitution of calcium by potassium on the dielectric properties in La_0.7Ca_0.3-xK_xMnO₃ compounds. The impedance plane plots show semicircle arcs at different temperature and an electrical equivalent circuit has been proposed to explain the impedance results. A high frequency dielectric relaxation was also observed.

Keywords

calcium compounds; dielectric materials; dielectric relaxation; lanthanum compounds; potassium compounds; La_0.7Ca_0.3-xK_xMnO₃; calcium; dielectric properties; electrical equivalent circuit; high frequency dielectric relaxation; impedance plane; impedance spectroscopy; potassium substitution; Calcium; Conductivity; DH-HEMTs; Dielectrics; Electrochemical impedance spectroscopy; Equivalent circuits; Frequency; Impedance measurement; Roentgenium; Temperature; Dielectric properties; Impedance spectroscopy; K-doped manganites; Phase transition;

fLanguage

English

Publisher

ieee

Conference_Titel

Mediterranean Winter, 2008. ICTON-MW 2008. 2nd ICTON

Conference_Location

Marrakech

Print_ISBN

978-1-4244-3484-8

Electronic_ISBN

978-1-4244-3485-5

Type

conf

DOI

10.1109/ICTONMW.2008.4773109

Filename

4773109