Dielectric properties and alternating current conductivity of sol–gel made La0.8Ca0.2FeO3 compound

Influence of alkaline-earth metal substitution on structure, electrical conductivity and oxygen transport properties of perovskite-type oxides La0.6A0.4FeO3−δ(A = Ca, Sr and Ba)

“…The electrical conductivity in La 1Àx A x FeO 3Àd (A = Ca, Sr, Ba) and related perovskite oxides is commonly interpreted on the basis of hopping of small polarons. 26,[40][41][42] Under oxidizing atmospheres, the conductivity can be expressed as, 26,43 s…”

Controlled and enhanced dielectric properties of high-titanium containing Li Ti0.1Ni1⿿O via chemical composition-tailoring

“…A decrease in ε΄ with increasing frequency is due to the fact the dipole lags behind the applied field at higher frequencies. The decrease of ε΄ with increasing frequency as observed for LTNO materials is a typical dielectric behavior seen in many of the traditional dielectrics with a high dielectric constant [2][3][4]11]. At room temperature, the values of ε΄ (at 100 Hz) in Li,Ti codoped NiO compounds are exceedingly higher (~10 5 ) than that of pure NiO (~900).…”

“…Simple and multi-component oxide dielectrics play key role in a wide variety of current and emerging technologies [1][2][3][4][5]. While there has been a great deal of interest in the wide band gap oxide materials for electronics, electro-optics, opto-electronics and magneto-electronics, a special attention is drawn in recent years towards the materials with high and/or giant dielectric constant for their expected revolutionary applications in micro/nano-electronics industry [1][2][3][4][5][6]. Such materials will have enormous applications in electrical storage and electronic data processing devices.…”

Study of the influence of 2.5% Mg2+ insertion in the B-site of La0.8Ca0.1Pb0.1FeO3 on its structural, electrical and dielectric properties

“…For example, the insertion of Ca into the Asite, reported by Andoulsi et al 14 and by Shi et al, 15 reduced the electrical resistance and improved the magnetic properties. Also, Benali et al 16 studied the effect of the introduction of lead cations in the A-site of the compound La 0.8 Ca 0.1 FeO 3 , on the structural, dielectric and gas detection properties. They found that insertion of the Pb ion into the A-site can restrict grain size growth and improve the response to ethanol gas.…”