Phase evolution and enhanced dielectric properties of BaO·Nd 2 O 3 ·TiO 2 ·B 2 O 3 glass-based dielectrics containing CaCu 3 Ti 4 O 12

Key, Sung Hun; Lee, Dong Hoon; Jung, Jae Woong; Kim, Byeong Kon; Cho, Yong Soo

doi:10.1016/j.jallcom.2012.03.094

Cited by 5 publications

(3 citation statements)

References 17 publications

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“…In addition, in recent years, lanthanum-doped and strontium-doped ceramic composite material as a new kind of perovskite ceramic material has been widely researched and used as solid fuel cell anode material, microwave dielectric material and photo-dew-sensitive material, etc. [4,5,6,7,8]. Therefore, it could be supposed that La 1 − x Sr x TiO 3+δ (LST) may have better properties and potential applications.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Electrical Properties of La0.9Sr0.1TiO3+δ

Gao

et al. 2015

Materials

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La1−xSrxTiO3+δ (LST) has been studied in many fields, especially in the field of microelectronics due to its excellent electrical performance. Our previous theoretical simulated work has suggested that LST has good dielectric properties, but there are rare reports about this, especially experimental reports. In this paper, LST was prepared using a solid-state reaction method. The X-rays diffraction (XRD), scanning electron microscope (SEM), broadband dielectric spectroscopy, impedance spectroscopy and photoconductive measurement were used to characterize the sample. The results show that the values of dielectric parameters (the relative dielectric constant εr and dielectric loss tanδ), dependent on temperature, are stable under 350 °C and the value of the relative dielectric constant and dielectric loss are about 52–88 and 6.5 × 10−3, respectively. Its value of conductivity increases with rise in temperature, which suggests its negative temperature coefficient of the resistance. In addition, the band gap of LST is about 3.39 eV, so it belongs to a kind of wide-band-gap semiconductor materials. All these indicate that LST has anti-interference ability and good dielectric properties. It could have potential applications as an electronic material.

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Section: Introductionmentioning

confidence: 99%

Preparation and Electrical Properties of La0.9Sr0.1TiO3+δ

Gao

et al. 2015

Materials

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“…The larger the particle is, the greater the viscous flow tension is required and the higher the sintering temperature is. The BaO-Nd 2 O 3 -TiO 2 -B 2 O 3 sample showed early densification at 610°C–670°C with an average particle size of 3 μ m (Key et al , 2012). The softening temperature of 554°C and the crystallisation temperature of around 650°C for the glass were confirmed by an average particle size ∼5 μ m used as a filler (Ju et al , 2013).…”

Section: Resultsmentioning

confidence: 99%

Coupling additive manufacturing and low-temperature sintering: a fast processing route of silicate glassy matrix

Tang¹,

Wang²,

Li³

et al. 2021

RPJ

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Purpose The low-temperature sintering of silica glass combined with additive manufacturing (AM) technology has brought a revolutionary change in glass manufacturing. This study aims to carry out in an attempt to achieve precious manufacturing of silicate glassy matrix through the method of slurry extrusion. Design/methodology/approach A low-cost slurry extrusion modelling technology is used to extrude silicate glassy matrix inks, composed of silicate glass powder with different amounts of additives. Extrudability of the inks, their printability window and the featuring curves of silicate glassy matrix are investigated. In addition, the properties of the low-temperature sintering green part as a functional part are explored and evaluated from morphology, hardness and colour. Findings The results showed that the particle size was mainly distributed from 1.4 µm to 5.3 µm, showing better slurry stability and print continuity. The parameters were set to 8 mm/s, 80% and 0.4 mm, respectively, to achieve better forming of three-dimensional (3D) samples. Besides, the organic binder removal step was concentrated on 200°C–300°C and 590°C–650°C was the fusion bonding temperature of the powder. The hardness values of 10 test samples ranged from 588 HL to 613 HL, which met the requirements of hard stones with super-strong mechanical strength. In addition, the mutual penetration of elements caused by temperature changes may lead to a colourful appearance. Originality/value The custom continuous AM technology enables the fabrication of a glass matrix with 3D structural features. The precise positioning technology of the glass matrix is expected to be applied more widely in functional parts.

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“…Generally, typical high 3 r materials, such as ferroelectric ceramics, are broadly used for electronic packaging components because of their promising dielectric properties. [4][5][6] However, the ceramics produced by the common processing are brittle and require high-temperature treatment that is not suitable for exible polymer substrates. The exible substrates have oen advantages over hard substrates in terms of shock resistance, solvent resistance, exibility, low-cost metallization, etc.…”

Section: Introductionmentioning

confidence: 99%

Dielectric and current–voltage characteristics of flexible Ag/BaTiO₃ nanocomposite films processed at near room temperature

et al. 2017

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High dielectric constant ceramic-polymer composite materials have been produced by thermal-treatment in the range of 160 to 200 C. Here, we introduce a room temperature process of generating flexible high dielectric constant nanocomposite films on a polymer substrate by combining a printing technique with a UV-curing process. The composite structure is based on nanoscale BaTiO 3 and Ag particles dispersed in a UV-cured polymer matrix. Dielectric characteristics of the nanocomposite thick films depended on the volume fraction and particle size of BaTiO 3 as well as the content of Ag. As an optimal result, a dielectric constant of $300 and a dielectric loss of 0.08 were achieved when $81 nm BaTiO 3 and $34 nm Ag particles were used in a total volume fraction of 56.2%, which are very competitive for flexible capacitive devices. Current-voltage behavior of the nanocomposite films depended largely on the content of Ag content as related to the percolative transition of electrical conduction.

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Phase evolution and enhanced dielectric properties of BaO·Nd 2 O 3 ·TiO 2 ·B 2 O 3 glass-based dielectrics containing CaCu 3 Ti 4 O 12

Cited by 5 publications

References 17 publications

Preparation and Electrical Properties of La0.9Sr0.1TiO3+δ

Preparation and Electrical Properties of La0.9Sr0.1TiO3+δ

Coupling additive manufacturing and low-temperature sintering: a fast processing route of silicate glassy matrix

Dielectric and current–voltage characteristics of flexible Ag/BaTiO₃ nanocomposite films processed at near room temperature

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Phase evolution and enhanced dielectric properties of BaO·Nd 2 O 3 ·TiO 2 ·B 2 O 3 glass-based dielectrics containing CaCu 3 Ti 4 O 12

Cited by 5 publications

References 17 publications

Preparation and Electrical Properties of La0.9Sr0.1TiO3+δ

Preparation and Electrical Properties of La0.9Sr0.1TiO3+δ

Coupling additive manufacturing and low-temperature sintering: a fast processing route of silicate glassy matrix

Dielectric and current–voltage characteristics of flexible Ag/BaTiO3 nanocomposite films processed at near room temperature

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Dielectric and current–voltage characteristics of flexible Ag/BaTiO₃ nanocomposite films processed at near room temperature