Structural, optical, and electronic properties of barium titanate: experiment characterisation and first-principles study

Tihtih, Mohammed; Ibrahim, Jamal Eldin F. M.; Basyooni, Mohamed A.; Belaid, Walid; Gömze, László A.; Kocserha, István

doi:10.1080/10667857.2022.2107473

Cited by 10 publications

(4 citation statements)

References 49 publications

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“…Ceramic compounds play an important role in the electronic industry due to their high dielectric constant and offer a wide range of applications, including actuators, sensors, power transmission, capacitors, and high-energy storage devices. − However, most high dielectric constant ceramics, such as PZT (lead zirconium titanate ceramics), contain lead which is hazardous to both humans and the environment. , To replace lead-based ceramics, more environmentally friendly materials have been explored. BaTiO 3 is one of the well-known lead-free ceramic materials with a wide range of applications in optoelectronics: thermistors, capacitors, piezoelectric devices, positive temperature coefficient of resistance (PTCR), and semiconductors. − BaTiO 3 (BTO) has the formula of a typical perovskite structure ABO 3 , where Ba is the A site and Ti is the B site. The structural, thermal, and optical properties can be improved by suitable ion doping or co-doping.…”

Section: Introductionmentioning

confidence: 99%

“…BaTiO 3 is one of the well-known lead-free ceramic materials with a wide range of applications in optoelectronics: thermistors, capacitors, piezoelectric devices, positive temperature coefficient of resistance (PTCR), and semiconductors. 7 − 10 BaTiO 3 (BTO) has the formula of a typical perovskite structure ABO 3 , where Ba is the A site and Ti is the B site. The structural, thermal, and optical properties can be improved by suitable ion doping or co-doping.…”

Section: Introductionmentioning

confidence: 99%

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Functionality and Activity of Sol–Gel-Prepared Co and Fe co-Doped Lead-Free BTO for Thermo-Optical Applications

et al. 2023

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The BTO, BFTC, and BCTF compounds were synthesized by the sol–gel method. The XRD study revealed the formation of single-phase tetragonal perovskite structures with the space group (P4mm). The crystalline parameters were studied as a function of Fe and Co contents and occupation of Ba and/or Ti sites by Fe and Co in the BTO lattice. It was found that the obtained strain increases when Ba2+ is substituted by Co2+ and Ti4+ by Fe3+. The Raman investigation confirmed the existence of three active modes (B1/E (TO1LO), (E (TO)/A1(TO3), and (A 1(LO)/E (TO), all of which are related to the existence of the tetragonal phase and strongly support the XRD results. The microstructural study showed a clear correlation between the presence of Fe and Co and the grain size distribution. Optical studies revealed the improvement in band gap energy with transition-metal (Fe and Co) co-doped BTO ceramics. The decrease in the band gap is explained by the competing effects of Columbian interactions, microdeformation, and oxygen defects. The results indicate that the presence of Fe and Co dopants enhances the absorption in the BTO ceramic. The dopants demonstrated an effect on thermal conductivity: they decreased the thermal conductivity of BTO, which is in the range of 0.76–2.23 W m–1 K–1 at room temperature and 2.02–0.27 W m–1 K–1 at elevated temperatures. The microstructure of the manufactured materials and the grain size distribution affect the compressive strength.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Functionality and Activity of Sol–Gel-Prepared Co and Fe co-Doped Lead-Free BTO for Thermo-Optical Applications

et al. 2023

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“…Barium titanate (BT) is a type of material that is often used in the electrical and electronic industries due to its various desirable properties, such as its ability to exhibit ferroelectricity, pyroelectricity, and piezoelectricity, as well as having a high dielectric permittivity and a positive temperature coefficient of resistivity. It is abbreviated as BT and is written as BaTiO 3 in chemical notation. , Perovskite materials that are derived from BT have a wide range of applications, including use in devices that have a positive temperature coefficient, devices that generate pulses, infrared detectors, microwave electronics that can be voltage-tuned, multilayer ceramic capacitors (MLCCs), piezoelectric and ultrasonic actuators, thermal sensors and controllers, and microwave devices that utilize piezoelectric transducers and charge storage devices − and so forth. In order to produce MLCCs using BT material, the formulation of the BT must be carefully designed to control its electrical properties, particularly at high temperatures and under high electric fields .…”

Section: Introductionmentioning

confidence: 99%

Development of Yttrium-Doped BaTiO₃ for Next-Generation Multilayer Ceramic Capacitors

et al. 2023

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The use of electronic devices that incorporate multilayer ceramic capacitors (MLCCs) is on the rise, requiring materials with good electrical properties and a narrow band gap. This study synthesized yttrium-substituted barium titanate (Ba 1−x Y x TiO 3 , BYT) using a sol−gel process at 950 °C with varying concentrations of yttrium (0 ≤ x ≤ 0.3). X-ray diffraction analysis showed that the tetragonal phase became less pronounced as the yttrium content increased. The samples had varying grain sizes and porosity, with the BY30%T sample having the narrowest band gap at 2.21 eV. The BYT ceramic with 30% yttrium had a thermal conductivity of up to 7 W/m K and an electrical conductivity down to 0.002 (Ω cm) −1 at 180 °C. The current−voltage characteristics of the BYT MLCC were also studied, showing potential use in next-generation high-capacity MLCCs. This work presents BYT as a promising material for these types of capacitors.

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“…Such sol creates an interconnected polymeric network upon aging, known as gel [43]. The gel is used to form a film or a coating over a substrate for a wide range of applications such as superhydrophobic surfaces, gas sensing [44], integrated optics/photonics [45][46][47][48][49][50], electronic devices [51][52][53][54][55], biomedical [49,56,57] and pollution adsorption [58]. Additionally, the micro-patterning of such sol-gel films can be a promising candidate for future display and optoelectronic applications [59].…”

Section: Introductionmentioning

confidence: 99%

Sol–gel-derived nanoparticles coated liquid entities: liquid marbles, liquid plasticine, and flat interface

Lathia¹,

Sen²

2022

J. Micromech. Microeng.

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Particle-coated liquid entities are the basis of many useful products, such as foams, emulsions, bijels, and liquid marbles. Particles stabilized at the liquid-air interface have been widely explored during the past two decades. Such interfaces usually consist of micro- to nano-sized particles that often tend to aggregate and lose transparency as well as the smoothness of the interface. Recently, these obstacles have been overcome by using sol-gel-derived silica nanoparticle coating. Sol-gel-derived nanoparticles offer a monolayer structure at the interface with high transparency and reproducibility. This paper critically reviews three sol-gel-derived liquid entities: Liquid marbles, Liquid plasticine, and nanoparticle-coated flat interface. Liquid marble, a particle-covered droplet, was significantly explored for its application as a container in many biological and chemical processes. Unlike powder-derived liquid marble, sol-gel-derived liquid marble can be formed into any desired shape, commonly known as liquid plasticine. Monolayer-covered sol-gel entities also offer a simple physical platform for investigating many fundamental properties of particle-coated interfaces. In the present review, starting from its preparation to the application, all critical aspects are summarized. Some unaddressed issues compared to the powder LM are also discussed for future research.

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Structural, optical, and electronic properties of barium titanate: experiment characterisation and first-principles study

Cited by 10 publications

References 49 publications

Functionality and Activity of Sol–Gel-Prepared Co and Fe co-Doped Lead-Free BTO for Thermo-Optical Applications

Functionality and Activity of Sol–Gel-Prepared Co and Fe co-Doped Lead-Free BTO for Thermo-Optical Applications

Development of Yttrium-Doped BaTiO₃ for Next-Generation Multilayer Ceramic Capacitors

Sol–gel-derived nanoparticles coated liquid entities: liquid marbles, liquid plasticine, and flat interface

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Structural, optical, and electronic properties of barium titanate: experiment characterisation and first-principles study

Cited by 10 publications

References 49 publications

Functionality and Activity of Sol–Gel-Prepared Co and Fe co-Doped Lead-Free BTO for Thermo-Optical Applications

Functionality and Activity of Sol–Gel-Prepared Co and Fe co-Doped Lead-Free BTO for Thermo-Optical Applications

Development of Yttrium-Doped BaTiO3 for Next-Generation Multilayer Ceramic Capacitors

Sol–gel-derived nanoparticles coated liquid entities: liquid marbles, liquid plasticine, and flat interface

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Product

Resources

About

Development of Yttrium-Doped BaTiO₃ for Next-Generation Multilayer Ceramic Capacitors