Ferroelectric and phase transition studies in cesium nitrate: poly(vinyl alcohol) composite films

Nautiyal, Arvind; Sekhar, K. C.; Pathak, Nagendra Prasad; Nath, R.

doi:10.1007/s00339-009-5165-7

Cited by 15 publications

(7 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The fields corresponding to peaks were taken as the coercive field. The average value of E c ∼ 1.7 kV/cm is obtained in the J-E curve which is in the same range as obtained from P-E loop [8]. If there were no ferroelectricity present in the composite films the J-E curve would show linear behavior.…”

Section: Resultssupporting

confidence: 72%

“…The thickness of the composite film so obtained was measured to be ∼30 µm. The details of the film preparation method have been reported in our earlier paper [8]. The circular indium electrodes of diameter 2.2 mm on one side and complete metallization on other side of the composite films was vacuum deposited.…”

Section: Methodsmentioning

confidence: 99%

“…Recently, the ferroelectric hysteresis loops have been observed in CsNO 3 single crystal [7]. The optimization of ferroelectric properties based on remanent polarization as a function CsNO 3 composition gave the optimum values at 50 wt.% composition [8].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Switching Kinetics in Cesium Nitrate: Poly (Vinyl Alcohol) Composite Film

Nautiyal

Dabra

Sekhar

et al. 2011

Ferroelectrics Letters Section

Self Cite

View full text Add to dashboard Cite

The effect of pulse amplitude on the switching properties of cesium nitrate: poly (vinyl alcohol) composite film at room temperature has been studied. The switching response of the composite film was studied using the bipolar square pulses. The switching current transients were analyzed using finite grain model (FGM) and infinite grain media (IGM). The Matlab programming based upon the assumptions of FGM and IGM theories is used to fit the experimental data with the theoretical. The microscopic parameters such as effective dimensionality, switching time, nucleation rate, and domain wall velocity have been estimated. The polarization current and domain wall velocity exhibited exponential dependence on the pulse amplitude.

show abstract

Section: Resultssupporting

confidence: 72%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Switching Kinetics in Cesium Nitrate: Poly (Vinyl Alcohol) Composite Film

Nautiyal

Dabra

Sekhar

et al. 2011

Ferroelectrics Letters Section

Self Cite

View full text Add to dashboard Cite

show abstract

“…The molecular weight of PVA is 14,000 with glass transition temperature~70°C and melting point 220°C [15,16]. Initially all the precursors were mixed in stoichiometric ratio and balled milled for 12 h. Then the milled powder was dried and subjected to calcination at 1350°C for 6 h at 5°C/min in a conventional programmable furnace.…”

Section: Methodsmentioning

confidence: 99%

Relaxation and conduction mechanism of PVA: BYZT polymer composites by impedance spectroscopy

Senthil

Badapanda²,

Kumar

et al. 2012

J Polym Res

View full text Add to dashboard Cite

Frequency dependent dielectric, modulus, impedance and AC conductivity study of Poly Vinyl Alcohol with 25 vol.% of Yttrium modified Barium Zirconium Titanate ceramic have been investigated. The single phase Yttrium modified Barium Zirconium Titanate ceramics have been synthesized by conventional solid state route. The relaxation mechanism of dielectric and modulus study is due to the segmental motion of polymer chain along with the dipole orientation of ceramic in the polymer composite. The Nyquist plot of impedance shows two semicircles, which represents the bulk and interfacial effect of polymer composites. The activation energy decreases with incorporation of higher Yttrium modified Barium Zirconium Titanate ceramics in the polymer matrix due to the even distribution of ceramic in the polymer composite. The different activation energy obtained from conduction and relaxation of the composite indicates that various mechanisms are involved in the conduction and relaxation process.

show abstract

“…Ltd, Mumbai) with 99+% purity were used as precursors. The molecular weight of Polyvinyl alcohol is 14,000 with glass transition temperature~70°C and melting point~220°C is used as a polymer [9,10]. The precursors were measured stoichiometrically and ball milled for 12 h followed by calcination at 1350°C for 4 h. Finally calcined powders were grinded and phase analysis was done by X-ray diffractometer (XRD), PANalytical Japan.…”

Section: Introductionmentioning

confidence: 99%

Dielectric relaxation behavior and electrical conduction mechanism in polymer-ceramic composites based on Sr modified Barium Zirconium Titanate ceramic

et al. 2012

View full text Add to dashboard Cite

In this paper, we report the dielectric relaxation behavior and electrical conduction mechanism of Sr modified Barium Zirconium Titanate, (Ba 1-x Sr x Zr 0.1 Ti 0.9 O 3 (x0 0.1, 0.2, 0.3)) (BSZT) ceramic in the polyvinyl alcohol (PVA) matrix. The single phase BSZT ceramics are prepared by the conventional solid state route and are added to the polymer matrix at 25:75 volume percentage. Surface morphology of polymer ceramic composite identifies the uniform distribution of the ceramic particles in the polymer matrix. Dielectric and tangent loss spectrum of the composites indicates the distribution of relaxation time. Electric modulus analysis shows the relaxation peaks of bulk and interface properties, which follows the Arrhenius law. The ac conductivity spectrum of pure PVA obeys Jonchers power law and polymer composites obey the double power law which conduction mechanisms are explained by Jump Relaxation Model. The activation energy varies from the relaxation to conduction mechanism indicates that the different charge contributions are involved in both the processes.

show abstract

Ferroelectric and phase transition studies in cesium nitrate: poly(vinyl alcohol) composite films

Cited by 15 publications

References 24 publications

Switching Kinetics in Cesium Nitrate: Poly (Vinyl Alcohol) Composite Film

Switching Kinetics in Cesium Nitrate: Poly (Vinyl Alcohol) Composite Film

Relaxation and conduction mechanism of PVA: BYZT polymer composites by impedance spectroscopy

Dielectric relaxation behavior and electrical conduction mechanism in polymer-ceramic composites based on Sr modified Barium Zirconium Titanate ceramic

Contact Info

Product

Resources

About