Heat-Resistant Ferroelectric-Polymer Nanocomposite with High Dielectric Constant

Mukhin, Nikolay; Afanasjev, V. P.; Sokolova, I. M.; Чигирев, Д. А.; Kastro, R. A.; Rudaja, Lyudmila; Lebedeva, G. K.; Oseev, Aleksandr; Tumarkin, A. V.

doi:10.3390/ma11081439

Cited by 9 publications

(8 citation statements)

References 29 publications

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“…Poly( o ‐hydroxy amides) and poly(benzoxazoles) (PBO) (Figure 3) formed during POA polycyclodehydration are used as highly heat‐resistant polymer binders in composite materials for microelectronics and membrane technologies 25–29 …”

Section: Resultsmentioning

confidence: 99%

Novel hydroxyl‐containing and thermo‐dehydrocyclizable polycondensation polymers for multifunctional materials: Synthesis, properties, application

Lebedeva

Кононова

Kruchinina

et al. 2021

J of Applied Polymer Sci

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Novel poly(amide‐imide)s and poly(amide‐o‐hydroxy‐imide)s were synthesized in the process of low‐temperature polycondensation of diacid chloride of 2‐(4‐carboxyphenyl)‐1,3‐dioxoisoindoline‐5‐carboxylic acid with a single diamine of 5,5′‐methylenebis(2‐aminophenol (DADHyDPhM) or of 4,4′‐methylenebis(benzeneamine) (DADPhМ), and also with a mixture of named diamines (molar ratios of DADHyDPhM to DADPhМ being equal to 7:3, 1:1, and 3:7). The influence of hydroxy‐imide modifying units (fragments) introduced into the basic poly(amide‐imide) on its thermal stability (the processes of polymers destruction proceed intensively in the temperature range from 400 to 600°C and has a complex character); parameters of pervaporation through heat‐resistant films prepared from polymer solutions were analyzed. Polymer films are rigid materials (modulus of elasticity–3 to 4 GPa) with a strength above 100 MPa. Heating up to 300°C leads for all three compositions to a noticeable increase in the elastic modulus and to a pronounced tendency to increase the strength characteristics.

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Section: Resultsmentioning

confidence: 99%

Novel hydroxyl‐containing and thermo‐dehydrocyclizable polycondensation polymers for multifunctional materials: Synthesis, properties, application

Lebedeva

Кононова

Kruchinina

et al. 2021

J of Applied Polymer Sci

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“…Different models have to be used to correctly describe the effects under consideration, since the effective dielectric properties of the composite depend on the peculiarities of phase mixing and the nature of their interaction, the filler concentration, its morphology, and the microstructure of the composite. Many of the above aspects depend on the technological conditions for obtaining the composite [ 34 , 35 , 36 , 37 ].…”

Section: Resultsmentioning

confidence: 99%

Barium-Strontium Titanate/Porous Glass Structures for Microwave Applications

Tumarkin

Tyurnina

et al. 2020

Materials

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Based on porous silicate glasses obtained by ion exchange, glass-ceramic materials containing a solid solution of barium-strontium titanate with a dielectric constant of more than 100 at microwaves, were synthesized for the first time. Glass-ceramic structures were studied using X-ray diffraction, secondary electron microscopy, Mössbauer spectroscopy and porometry methods. Electrical characteristics such as permittivity and losses of as-prepared and annealed in oxygen medium samples were also investigated at microwaves. It was shown that the method of obtaining porous glasses, due to ion exchange between KFeSi glass and LiNO3 and NaNO3 melts, allows for controlling a wide range of pore sizes and makes it possible to form glass porous structures with pores of the required size. The efficiency of the process of filling a porous matrix with a ferroelectric filler was investigated and the average depth of its penetration was estimated. It was shown that annealing glass-ceramic structures in an oxygen environment had a positive effect on their structural and electrical characteristics. Glass-ceramic structures demonstrate a significant increase in permittivity and a decrease in losses after high-temperature treatment in oxygen.

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“…Fourth is a study of size effects [19]. Fifth is the creation of ferroelectric composites [20], metamaterials, and superlattices such as in [21,22,23], where PZT can also be used. The latter branches are a field for obtaining new effects and new devices.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Properties of PZT Films with Different PbO Content—Ionic Mechanism of Built-In Fields Formation

et al. 2019

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Experimental studies were conducted on the effects of lead oxide on the microstructure and the ferroelectric properties of lead zirconate-titanate (PZT) films obtained by the method of radio frequency (RF) magnetron sputtering of a ceramic PZT target and PbO2 powder with subsequent heat treatment. It is shown that the change in ferroelectric properties of polycrystalline PZT films is attributable to their heterophase structure with impurities of lead oxide. It is also shown that, even in the original stoichiometric PZT film, under certain conditions (temperature above 580 °C, duration greater than 70 min), impurities of lead oxide may be formed. The presence of a sublayer of lead oxide leads to a denser formation of crystallization centers of the perovskite phase, resulting in a reduction of the grain size as well as the emergence of a charge on the lower interface. The formation of the perovskite structure under high-temperature annealing is accompanied by the diffusion of lead into the surface of the film. Also shown is the effect of the lead ions segregation on the formation of the self-polarized state of thin PZT films.

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Heat-Resistant Ferroelectric-Polymer Nanocomposite with High Dielectric Constant

Cited by 9 publications

References 29 publications

Novel hydroxyl‐containing and thermo‐dehydrocyclizable polycondensation polymers for multifunctional materials: Synthesis, properties, application

Novel hydroxyl‐containing and thermo‐dehydrocyclizable polycondensation polymers for multifunctional materials: Synthesis, properties, application

Barium-Strontium Titanate/Porous Glass Structures for Microwave Applications

Microstructure and Properties of PZT Films with Different PbO Content—Ionic Mechanism of Built-In Fields Formation

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