Microstructure and electrical properties of tantalum doped (Ba0.85Ca0.15)(Zr0.10Ti0.90)O3 ceramics

Zhang, Donghui; Zhang, Yueli; Yang, Shenghong

doi:10.1007/s10854-014-2481-2

Cited by 10 publications

(6 citation statements)

References 36 publications

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“…The slope obtained by fitting the curve with the least-square method is equal to γ (the diffusion coefficient). And the fitting results show that most of the γ values are about 1.6 (between 1 and 2), suggesting the relaxor-like characteristic [39]. Figures 7(a) and 7(b) show the ferroelectric P-E hysteresis loops of randomly oriented and textured xEr-BCTZ thick films measured at 10 Hz under a maximum electric field of 4 kV/mm.…”

Section: Resultsmentioning

confidence: 96%

Enhanced ferro-/piezoelectric properties of tape-casting-derived Er3+-doped Ba0.85Ca0.15Ti0.9Zr0.1O3 optoelectronic thick films

Lin

et al. 2020

J Adv Ceram

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Er 3+-doped Ba 0.85 Ca 0.15 Ti 0.9 Zr 0.1 O 3 (xEr-BCTZ, x = 0, 0.005, 0.01, 0.015) multifunctional thick films were prepared by the tape-casting method, using sol-gel-derived nano-sized powders as the matrix material. The surface morphologies, photoluminescence, and electrical properties were investigated. Dense microstructures with pure perovskite structure were obtained in the thick films. By doping an appropriate amount of Er 3+ , the samples exhibit superior up-conversion photoluminescence performance and simultaneously enhanced electrical performances. In addition, relatively higher texture fractions (with the largest value of 83.5%) were realized through introducing plate-like BaTiO 3 templates to make the thick film grow by the [001] c orientation. And the ferro-/piezoelectric properties of the thick films were further improved, showing potential in the applications of micro-optoelectronic devices.

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Section: Resultsmentioning

confidence: 96%

Enhanced ferro-/piezoelectric properties of tape-casting-derived Er3+-doped Ba0.85Ca0.15Ti0.9Zr0.1O3 optoelectronic thick films

Lin

et al. 2020

J Adv Ceram

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“…contents. Above 900°C, the CTFO reveals single phase with orthorhombic (O) structure as obtained by XRD pattern, the space charge distribution over the bulk effects is also found at higher frequencies as the grain size increases [38]. The equivalent circuits for S1, S2, S3 and S4 are shown in Table 3, which are calculated experimentally by a mathematical equation.…”

Section: Complex Impedance Spectroscopy Analysismentioning

confidence: 85%

“…From this, a slight variation in grain resistance can be observed and no major arc is obtained afterwards. Therefore, the latest reports also described CTFO as an ionic conductor (n, p-type) with high iron contents [2,17,38]. Moreover, the space charge distribution covered linearly at high frequencies with increase of sintering temperatures too.…”

Section: Complex Impedance Spectroscopy Analysismentioning

confidence: 93%

“…In most perovskite materials, except CCTO (Cu x Ca 1-x TiO 3 ), temperature plays a significant role in determining the structural behavior, phase transition, and morphological changes, which impute the internal grain boundary layer capacitance (IBLC). Furthermore, the dielectric properties of such materials may indeed be sensitive to physical effects such as temperature, electric field, and frequency for electrically activated bulk and grain boundary effects [36][37][38][39].However, perovskite materials require a detailed investigation on size and structural properties in various electrical and electromagnetic sensor domains, which are used especially in micro-electro-mechanical system applications [40,41].…”

Section: Introductionmentioning

confidence: 99%

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Effect of temperature on the electrical properties of nanocrystalline CaTi1−x Fe x O3−Δ perovskite

Mathu¹,

Nehru²,

Vinoth³

et al. 2015

J Mater Sci: Mater Electron

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Calcium titanate nanopowder doped with high content (1 M%) of iron was synthesized using simple sol-gel method. The four obtained samples were post-sintered at 100, 500, 900, and 1250°C to get soft agglomerates of nanocrystalline perovskites, which were deagglomerated by wet milling process using ethanol as a medium. The general stoichiometric formula for iron-doped CaTiO 3 was symbolized as CaTi 1-x Fe x O 3-d . The crystallographic structure of perovskites was found to be orthorhombic for all the four samples. The real and imaginary parts of the impedance values of sintered samples as a function of frequency were obtained using complex impedance spectroscopy. All the instrumental parameters were calibrated before initiating the measurements. The frequency range was set between 0.01 Hz and 1 MHz, and AC bias voltage was maintained at 50 mV. The objective of this work was to find the economical relevance of pioneering materials for electronic applications such as hydrogen production in fuel cells, solar plant, ferroelectric memory devices, microwave resonators, and sensible membranes as they are cheap and readily available, and can be prepared using controllable synthesis in a commercial laboratory.

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“…In addition, PO 4 3− , possessing a large negative charge, is postulated to help the e − /h + separation, which can effectively improve its photocatalytic activity. 11,12 So far, various methods have been developed for synthesizing BiPO 4 , such as chemical vapor deposition (CVD), 13,14 hydrothermal, [14][15][16][17] microwave synthesis 18 and sonochemical synthesis, 19 etc. Cathodic electrodeposition has shown a power ability to control the growth of the crystal, and it presents a simple, quick, controllable and economical method for the preparation of large area thin films.…”

mentioning

confidence: 99%

Electrochemical Synthesis of Photoelectrocatalytic Thin Films of Hexagonal BiPO₄Nanorods

Qiu

Zeng

et al. 2015

J. Electrochem. Soc.

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Hexagonal BiPO 4 nanorods thin films with remarkable photoelectrocatalytic (PEC) performance were successfully fabricated on FTO substrates via cathodic electrodeposition. Chronoamperometry, linear sweep voltammertry (LSV) and electrochemical impedance spectroscopy (EIS) were used to study the photoelectrochemical properties of these materials. The photoelectrocatalytic capability was evaluated by the degradation of methyl blue (MB). The film deposited in 40 min has the best catalytic activity and good stability with the 30 h degrading experiment. The photocurrent was increasing because the concentration of MB was being degrading. The CV analysis which reveals a potential shift and the increasing anodic and cathodic peak currents with increasing scan rate proves a diffusion-controlled process. The hydroxyl radicals are the main active species that can oxidize the adsorbed organic pollutants. Up to date, powder photocatalysts have several inevitable weaknesses among the researches of photocatalysis in aqueous solution, including the separation of powder from system after reaction, high electron-hole recombination rate of catalyst which reduces the photocatalystic activity, and the limitation of the photoefficiency due to the slow interfacial electron transfer. Since the report of the HondaFujishima effect on TiO 2 electrodes under UV light, 34 photoelectrocatalytic (PEC) oxidation has been regarded as an ideal means of curbing environmental organic dyes pollution in aqueous solution using different semiconductor electrodes. [35][36][37][38][39] Moreover, the applied potential can enhance charge separation and facilitate the transfer of photogenerated electron. In our previous work, the BiPO 4 film prepared by hydrothermal process has performed remarkable photoelectrocatalytic activity. 40 However, a more facile way to synthesize more stable film still needs to be explored.In this paper, the BiPO 4 nanorods were first synthesized by a one-step cathodic electrodepostion approach on FTO substrates from precursor solution. Structure, morphology and the electrochemical performance were characterized as well. The photoelectrocatalytic activity was evaluated by the degradation of MB. ExperimentalElectrochemical deposition.-All chemical reagents were of analytical purity without further purification. All electrochemical dez E-mail: tzhangym@jnu.edu.cn position experiments were performed with a HDV-7C transistor potentiostatic apparatus connected to a three-electrode cell. A graphite rod was used as the auxiliary electrode. Fluorine doped SnO 2 (FTO) coated glass (5.0×4.0 cm 2 ) with a sheet resistance of 10 was used as the working electrode which was connected to the cell with a double salt bridge system. An Hg/Hg 2 Cl 2 electrode was used as the reference electrode. The FTO substrate was cleaned ultrasonically in ethanol, distilled water and 10% HNO 3 , and then rinsed in distilled water again before electrodeposition. Solution for electrodepositing the BiPO 4 nanorods thin films were prepared by dissolving 10 mM Bi(NO ...

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Microstructure and electrical properties of tantalum doped (Ba0.85Ca0.15)(Zr0.10Ti0.90)O3 ceramics

Cited by 10 publications

References 36 publications

Enhanced ferro-/piezoelectric properties of tape-casting-derived Er3+-doped Ba0.85Ca0.15Ti0.9Zr0.1O3 optoelectronic thick films

Enhanced ferro-/piezoelectric properties of tape-casting-derived Er3+-doped Ba0.85Ca0.15Ti0.9Zr0.1O3 optoelectronic thick films

Effect of temperature on the electrical properties of nanocrystalline CaTi1−x Fe x O3−Δ perovskite

Electrochemical Synthesis of Photoelectrocatalytic Thin Films of Hexagonal BiPO₄Nanorods

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Microstructure and electrical properties of tantalum doped (Ba0.85Ca0.15)(Zr0.10Ti0.90)O3 ceramics

Cited by 10 publications

References 36 publications

Enhanced ferro-/piezoelectric properties of tape-casting-derived Er3+-doped Ba0.85Ca0.15Ti0.9Zr0.1O3 optoelectronic thick films

Enhanced ferro-/piezoelectric properties of tape-casting-derived Er3+-doped Ba0.85Ca0.15Ti0.9Zr0.1O3 optoelectronic thick films

Effect of temperature on the electrical properties of nanocrystalline CaTi1−x Fe x O3−Δ perovskite

Electrochemical Synthesis of Photoelectrocatalytic Thin Films of Hexagonal BiPO4Nanorods

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Electrochemical Synthesis of Photoelectrocatalytic Thin Films of Hexagonal BiPO₄Nanorods