Structure and dielectric properties of sodium-doped Ba(FeNb)0.5O3

Reduced dielectric loss in Ba0.95Sr0.05(Fe0.5Nb0.5)O3 thin film grown by pulsed laser deposition

“…Researchers proposed that the barrier layer mechanism is responsible for the dielectric behaviour in BaFe 0.5 Nb 0.5 O 3 ceramics. [3][4][5][6] Chung et al, 3 Intatha et al 6 and Liao et al 4 conrmed this idea by the impedance spectroscopy measurements which showed that BaFe 0.5 Nb 0.5 O 3 ceramics are electrically heterogeneous, consisting of semiconducting grains with insulating grain boundaries. Recently, Wang et al 7 and Huang et al 8 suggested that the dielectric relaxation in BaFe 0.5 Nb 0.5 O 3 ceramics is an oxygen vacancies related phenomena.…”

“…On the whole, the grain boundary barrier layer capacitor model is widely accepted for the dielectric behaviour in BaFe 0.5 Nb 0.5 O 3 ceramics. 4,5 The barrier layers are formed due to the creation of oxygen vacancies during sintering at high temperature ($1000 C) in ceramics. 4,5 Electrons released in this process, may be captured by Fe 3+ leading to the formation of Fe 2+ .…”

“…4,5 The barrier layers are formed due to the creation of oxygen vacancies during sintering at high temperature ($1000 C) in ceramics. 4,5 Electrons released in this process, may be captured by Fe 3+ leading to the formation of Fe 2+ . This leads to the hopping of electrons between the Fe 2+ and Fe 3+ ions, and increases the conductivity, which is responsible for the dielectric loss.…”

Dielectric properties of Ga2O3-doped barium iron niobate ceramics

“…To improve the dielectric properties, solid‐solutions between BFN and other materials, such as (1– x )BFN– x SrTiO 3 and (1– x )BFN– x BaTiO 3 , have been formed and reported . The effects of doping, such as A‐site doping using La and Na as dopants, on the dielectric properties of BFN have also been investgated . However, the dielectric response of B‐site‐doped BFN has not been widely studied.…”

LaNi0.5Ti0.5O3/CoFe2O4-based sensor for sensitive determination of paracetamol

“…However, most of the recent promising works employ nanostructured materials for the fabrication of biosensors because nanomaterials possess high surface volume ratio and unique physical and chemical properties [1]. A number of properties such as photocatalytic property [3], magnetic properties [4], conductivity, and dielectric property [5][6][7][8] have been widely investigated. The perovskite-type oxide is a frequently encountered structure in inorganic chemistry, and this structure can accommodate most of the metallic ions in the periodic table with a significant number of different anions.…”