Synthesis, Characterization and Electrical Admittance Study of LaCrO3 Perovskite Compound

Abstract

We synthesized the ferroelectric perovskite oxide LaCrO 3 (LCO) using solid-state reaction method. Scanning electron microscope (SEM), energy x-ray dispersive (EDX) and X-ray diffraction (XRD) have been employed to study structural and chemical analysis of synthesized powder, respectively. Electrical admittance properties of the perovskite oxide sample was performed in wide range frequency (1Hz-10MHz) and temperature (-100 °C to +100 °C) using dielectric/impedance spectrometer. The results showed that the LCO has different activation energies and the calculated activation energies are of 0.175 eV and 0.220 eV from the G dc vs. 1000/T and 0.152 eV and 0.197 eV from the f min vs. 1000/T plots, respectively. The temperature-dependent exponent s showed that the overlapping large polaron tunneling (OLPT), quantum mechanical tunneling (QMT) and the correlated barrier hopping (CBH) conduction mechanism models can be suggested for the LCO compound.

Altering Electrical Features of LuFeO3 Compound Via Ir Doping into Fe Sites

“…For instance, it can hold hexagonal and orthorhombic structures [14,15]. LFO accommodates both magnetic and electrical features at the same time therefore it is considered as multiferroic material [16,17]. Due to low optical band gap of LFO, between ~ 2 eV for films and ~ 2.76 eV for ceramics [18,19], this compound has potential to be used in photocatalyst and solar cells [20].…”