Study of Ferroelectric Domain Structure of Barium Strontium Titanate Based Glass-Ceramics

Батурин, И. С.; Chezganov, D. S.; Neradovskiy, Maxim; Naumova, N. A.; Shur, V. Ya.; Zhang, Y.; Wang, X.

doi:10.1080/00150193.2013.778558

Cited by 3 publications

(2 citation statements)

References 15 publications

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“…The reduction in the value of α in this region compared to the expected value could be due to the ferroelectric polarization and strong voltage-dependence of dielectric constant at grain boundaries [12]. Furthermore, it is observed that the slope in this region decreases as the Ba content increases in the BST lattice, this phenomenon could be attributed to the fact that the ferroelectric hysteresis strengthens as Ba content increases [13]. The current in this region forms due to the hopping conduction mechanism, because thermal excitation of trapped electrons from one trap to another dominates transport in the film [14].…”

Section: Resultsmentioning

confidence: 79%

Effect of Barium-to-Strontium on Leakage Current Mechanism of Sol-Gel BaxSr1-xTiO3 Thin Films

Saif

Jamal

Poopalan

2014

AMR

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Ferroelectric barium strontium titanate (BaxSr1-xTiO3) thin films with different Ba content have been fabricated as MFM configuration using sol-gel technique. The effect of barium-to-strontium ratio on the leakage current mechanism of BaxSr1-xTiO3 thin films has been investigated. The results show that the leakage current density increases as Ba content increases, which attributed to the grain size effect. The leakage current for the tested films has been studied using log (J) vs log (E) plane, which shows three distinguished linear regions. These regions have been characterized using power law () to find that: the region at low electric fields (E < 20 KV/cm) is controlled by Ohmic conduction and the other two regions (E > 20 KV/cm) are due to space charge limited conduction, which is also confirmed via modified Langmuir-Child law. In addition, it is observed that at high electric fields region (E > 1.29×105 V/m) the films show Schottky emission (SE) and PooleFrenkel (PF) emission mechanisms.

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Section: Resultsmentioning

confidence: 79%

Effect of Barium-to-Strontium on Leakage Current Mechanism of Sol-Gel BaxSr1-xTiO3 Thin Films

Saif

Jamal

Poopalan

2014

AMR

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“…Further advantages include low porosity for high BDS and control of crystallite size for low dielectric loss and low electric-field-dependence of the dielectric constant. Many investigations of ferroelectric glass ceramics have focused on correlations between constitutions [8][9][10], microstructure [11,12], crystallization [13,14], and energy storage properties [15].…”

Section: Introductionmentioning

confidence: 99%

Effect of La2O3 Concentration on Electrical Properties of Barium Strontium Titanate Glass-Ceramics

Zhu

Zhang

Wei

et al. 2014

KEM

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Barium strontium titanate glass-ceramics with different La2O3 concentrations have been prepared by a melting-annealing technique. The effect of La2O3 concentration on phase evolution, microstructure and electrical properties of (Ba,Sr)TiO3-Al2O3-SiO2 glass-ceramics has been investigated. The X-ray diffraction results showed the volume fraction of the major perovskite (Ba,Sr)TiO3 crystalline phase increased with increasing La2O3 concentration. In addition, the scanning electron microscopy observations revealed that small amounts of La2O3 could accelerate the growth of crystals. When the La2O3 concentration was increased to 1.5 mol%, the microstructure of these samples displayed nonuniform distribution of the crystals. The dc conductivity measurements showed an increasing temperature dependence of conductivity with La2O3 doping at high temperature range above 400 °C. Impedance spectroscopy analysis indicated that the additive of La2O3 changed the major polarization mechanism to the relaxation polarization and the relaxation time for the La2O3 doped samples was much shorter than the undoped ones. The frequency dependence of dissipation factor curve displayed a peak at the range of 1 to 10 kHz due to the La2O3 addition. And the peak value decreased with increasing La2O3 concentration.

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Microstructure of barium strontium titanate based glass-ceramics doped by Ce and La

Турыгин

Chezganov

Батурин

et al. 2019

IOP Conf. Ser.: Mater. Sci. Eng.

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The microstructure and surface morphology of (Ba0.8,Sr0.2)TiO3 based glass-ceramics with different amounts of La and Ce were studied. It was shown that the addition of the 1.5% La and >2%Ce led to formation of dendrite-like structures. The isolated clusters of ferroelectric phase were found in all investigated samples. Fraction of ferroelectric phase was about 0.75% for La addition and 0.25% for Ce addition.

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Study of Ferroelectric Domain Structure of Barium Strontium Titanate Based Glass-Ceramics

Cited by 3 publications

References 15 publications

Effect of Barium-to-Strontium on Leakage Current Mechanism of Sol-Gel Ba<sub>x</sub>Sr<sub>1-x</sub>TiO<sub>3</sub> Thin Films

Effect of Barium-to-Strontium on Leakage Current Mechanism of Sol-Gel Ba<sub>x</sub>Sr<sub>1-x</sub>TiO<sub>3</sub> Thin Films

Effect of La<sub>2</sub>O<sub>3 </sub>Concentration on Electrical Properties of Barium Strontium Titanate Glass-Ceramics

Microstructure of barium strontium titanate based glass-ceramics doped by Ce and La

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