Study of Maxwell–Wagner (M–W) relaxation behavior and hysteresis observed in bismuth titanate layered structure obtained by solution combustion synthesis using dextrose as fuel

Subohi, Oroosa; Shastri, Lokesh A.; Kumar, G. S.; Malik, М. M.; Kurchania, Rajnish

doi:10.1016/j.materresbull.2013.10.012

Cited by 18 publications

(10 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To understand these phenomena, it requires an insight to the mechanism of conduction. The conduction activation energy of BIT and Sr-doped samples at high temperatures is ranging from 0.91 to 1.01 eV, close to the reported values of charged oxygen vacancies in perovskite oxides [33,[35][36][37][38]. Paladino [35] reported that the activation energy for diffusion of the doubleionized oxygen vacancies in SrTiO 3 crystal is 0.98 eV.…”

Section: Discussionsupporting

confidence: 78%

Temperature dependent conductivity of Bi4Ti3O12 ceramics induced by Sr dopants

et al. 2018

View full text Add to dashboard Cite

Bi 4 Ti 3 O 12 is an important lead-free ferroelectric material. Doping modification of Bi 4 Ti 3 O 12 has attracted great attention to improving its performances. In this work, the effect of Sr dopants on the microstructure, dielectric, and conductivity of Bi 4 Ti 3 O 12 ceramic was investigated by XRD, SEM, and AC impedance spectroscopy. Substitution of 1 at% Sr for Bi decreased the grain size, suppressed the dielectric dispersion of Bi 4 Ti 3 O 12 ceramic at room temperature, and resulted in different effects on the conductivity of grains and grain boundaries. The conductivity of grains in Bi 4 Ti 3 O 12 ceramic was increased by the small amount of Sr dopants in the whole experimental temperature range. While the grain boundaries of 1 at% Sr-doped Bi 4 Ti 3 O 12 exhibited lower conductivity than pure Bi 4 Ti 3 O 12 below ~380 ℃ and higher conductivity above ~380 ℃. The experimental phenomena were interpreted in term of compensating defects for Sr dopants. * Corresponding author. attracted great attention in high-temperature piezoelectric devices [3,4], transducers [5,6], and memory devices [7,8] which are beneficial from their high ferroelectric transition temperature (T c ) and fatigue-free characteristics [9,10]. Bi 4 Ti 3 O 12 (BIT) is a typical 3-layered Aurivillius compound with T c = 675 ℃ [11]. However, high electric leakage limits its extensive application. The substitution of alkali metal, alkaline-earth metal, and rare earth metal ions for Bi is a desirable method to suppress the leakage and tune the physical properties [12]. Several applicable Bi 4 Ti 3 O 12 -based compounds have been developed, such as Na 0.5 Bi 4.5 Ti 4 O 15 [13], SrBi 4 Ti 4 O 15 [14], SrBi 8 Ti 7 O 27 [15], and La 0.75 Bi 3.25 Ti 3 O 12 [16]. Although two Sr-containing BIT compounds were prepared, the effect of small amount of Sr substituting for Bi on the phase stability and properties of the

show abstract

Section: Discussionsupporting

confidence: 78%

Temperature dependent conductivity of Bi4Ti3O12 ceramics induced by Sr dopants

et al. 2018

View full text Add to dashboard Cite

show abstract

“…In addition, the value of dielectric constant increases for ceramic with Ce, Zr co-doped BIT as compared to undoped bismuth titanate as reported in our earlier publications [15,16]. An anomalous peak is observed around 550°C in pure BIT [16] which is attributed to the presence of oxygen vacancy sites and defects created due to Bi 3? ion volatilization.…”

Section: Dielectric Propertiessupporting

confidence: 63%

“…4. The values of loss tangent of the Bi 3.4 Ce 0.6 Ti 2.4 Zr 0.6 O 12 ceramics decreased drastically as compared to that of pure bismuth titanate ceramic prepared using solution combustion route [16]. This decrease in the value of tand can be attributed to the combined effect of Ce 3?…”

Section: Dielectric Propertiesmentioning

confidence: 89%

Study of electrical and ferroelectric properties of Bi3.4Ce0.6Ti2.4Zr0.6O12 ceramics

Subohi

Kumar

Malik

et al. 2015

J Mater Sci: Mater Electron

Self Cite

View full text Add to dashboard Cite

Polycrystalline samples of Bi 3.4 Ce 0.6 Ti 2.4 Zr 0.6-O 12 (CeZrBIT) ceramics were synthesized using solution combustion route. X-ray diffraction study indicates the presence of pyrochlore phase due to Ce doping and orthorhombic distortion in the bismuth titanate lattice due to Zr addition. Improvement in dielectric and ferroelectric properties of CeZrBIT was observed in comparison with undoped bismuth titanate. Electrical behaviour of the sample was analyzed using the complex impedance plots as a function of frequency at different temperatures. NonDebye type dielectric relaxation is shown by this lead free ceramic. The Nyquist plot demonstrates the negative temperature coefficient of resistance characteristic of CeZrBIT. Density of states at Fermi level and activation energy of the compound was also evaluated using the AC conductivity data.

show abstract

“…Bismuth titanate (Bi 4 Ti 3 O 12 ) is also considered a promising lead-free electroceramic material, with wide applicability in electronic elements as transducers, piezoelectric, and memory devices. − The structure of this compound consists of (Bi 2 Ti 3 O 10 ) 2– layers formed by the BiTiO 3 unit cells of perovskite-like structures with alternating layers of (Bi 2 O 2 ) 2+ perpendicular to the c -axis. It has a high Curie temperature (675 °C) and possesses an orthorhombic structure below that temperature.…”

Section: Solution Combustion-derived Materialsmentioning

confidence: 99%

Solution Combustion Synthesis of Nanoscale Materials

Mukasyan²,

et al. 2016

View full text Add to dashboard Cite

Solution combustion is an exciting phenomenon, which involves propagation of self-sustained exothermic reactions along an aqueous or sol-gel media. This process allows for the synthesis of a variety of nanoscale materials, including oxides, metals, alloys, and sulfides. This Review focuses on the analysis of new approaches and results in the field of solution combustion synthesis (SCS) obtained during recent years. Thermodynamics and kinetics of reactive solutions used in different chemical routes are considered, and the role of process parameters is discussed, emphasizing the chemical mechanisms that are responsible for rapid self-sustained combustion reactions. The basic principles for controlling the composition, structure, and nanostructure of SCS products, and routes to regulate the size and morphology of the nanoscale materials are also reviewed. Recently developed systems that lead to the formation of novel materials and unique structures (e.g., thin films and two-dimensional crystals) with unusual properties are outlined. To demonstrate the versatility of the approach, several application categories of SCS produced materials, such as for energy conversion and storage, optical devices, catalysts, and various important nanoceramics (e.g., bio-, electro-, magnetic), are discussed.

show abstract

Study of Maxwell–Wagner (M–W) relaxation behavior and hysteresis observed in bismuth titanate layered structure obtained by solution combustion synthesis using dextrose as fuel

Cited by 18 publications

References 29 publications

Temperature dependent conductivity of Bi4Ti3O12 ceramics induced by Sr dopants

Temperature dependent conductivity of Bi4Ti3O12 ceramics induced by Sr dopants

Study of electrical and ferroelectric properties of Bi3.4Ce0.6Ti2.4Zr0.6O12 ceramics

Solution Combustion Synthesis of Nanoscale Materials

Contact Info

Product

Resources

About