Structural and electrical properties of BiFeO3–PbTiO3 system

Abstract

The polycrystalline samples of lead titanatemodified bismuth ferrite [i.e., (BiFeO 3 ) 1-x ? (PbTiO 3 ) x with x = 0.0, 0.1, 0.2, 0.3] were synthesized by a hightemperature solid-state reaction route. The formation of the materials was confirmed through basic structural analysis using X-rays diffraction data collected at room temperature. Detailed studies of dielectric and impedance characteristics of the materials in a wide frequency (1 kHz-1 MHz) and temperature (30-500°C) ranges using complex impedance spectroscopic method have provided many new results. The frequency dependence of ac conductivity suggests that the samples obey Jonscher's universal power law. A strong corelation between the micro-structural and impedance parameters was observed. The frequency-temperature dependence of electric modulus and impedance parameters of the materials shows the presence of non-Debye type of relaxation.

Investigation of the structural, surface topographical, fractal, capacitive, and electrical properties of a defect brownmillerite perovskite material KBiFeMnO5 for electronic devices

“…This evaluation is conducted following the topographical standard ISO25178. 24 The parameters and operators used to dene the characteristics of the surface texture are as follows:…”

Studies of structural, magnetic and dielectric properties of X-type Barium Zinc hexaferrite Ba2Zn2Fe28O46 powder prepared by combustion treatment method using ginger root extract as a green reducing agent

“…The sample prepared with 35 g ginger root extract (Sample (B)) shows a broad resonance peak between 10 kHz and 100 kHz, while other samples show resonance between 300 kHz and 2 MHz frequency range. AC conductivity (s ac ) of the samples was calculated by the formula [61];…”

Structural, Dielectric and Electrical Characteristic of Bi0.5Pb0.5[Fe0.1La0.4(Zr0.25Ti0.25)]O3

“…The high-frequency dispersion of conductivity is due to the typical RC network. At higher frequency, the decrease in capacitive reactance of the sample, lowers its impedance, which causes an increase in the ac conductivity of the sample [25][26][27]. The large slope at higher frequency may be interpreted as the conductivity due to the hopping of the free mobile species.…”