The Effect of γ Irradiation on Phase Transitions in the Polyimide–YBa2Cu3O6 + x System

Мурадов, А. Д.; Mukashev, K. M.; Kyrykbaeva, A. A.

doi:10.1134/s0030400x18060188

Cited by 2 publications

(4 citation statements)

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“…The Raman spectra (Figure 7) showed that with the introduction of a filler into the HTSC polyimide, new spectral lines formed and strong changes in the intensity of these lines occurred. This was confirmed by the results of [21,22]. In the work of [21,22], it was shown that the emerging peaks at 450-470 cm −1 corresponded to the oxygen ions in YBCO.…”

Section: Discussionsupporting

confidence: 65%

“…This was confirmed by the results of [21,22]. In the work of [21,22], it was shown that the emerging peaks at 450-470 cm −1 corresponded to the oxygen ions in YBCO. In the material YBa 2 Cu 3 O 6+x , there is an abnormally high oxidizing pair of Cu 3+ /Cu 2+ .…”

Section: Discussionsupporting

confidence: 65%

“…In the material YBa 2 Cu 3 O 6+x , there is an abnormally high oxidizing pair of Cu 3+ /Cu 2+ . During the formation of the composite, at elevated temperatures, the effect of this pair is enhanced [21]. In [22], the implementation of such an interaction in the complexes was proved.…”

Section: Discussionmentioning

confidence: 92%

“…These processes are a sequence of elementary actions due to local fluctuations in the thermal energy that are sufficient to overcome the potential energy barrier Ui. The mechanism of these elementary actions is based on the fundamental principles of fluctuation dynamics [18][19][20][21][22]. A finely dispersed high-temperature superconductor was chosen as a Polyimide composite films with a finely dispersed filler made from a high-temperature superconductor, YBa 2 Cu 3 O 6+x (YBCO), were studied.…”

Section: Methodsmentioning

confidence: 99%

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Modification of Macromolecules of Polyimide Films by Electron Irradiation

et al. 2023

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New polymeric materials formation by controlling their properties is the primary and most challenging problem in developing a methodology for synthesizing a chosen technology and its use. The combined effect of high-energy electron radiation and tensile stress will cause a decrease in crystallinity and the breakage of chemical bonds in polyimide film macromolecules and is a new approach in their production technology. The effect of uniaxial tension and electron irradiation on the modification of polyimide film at room temperature was studied. Irradiation of the films caused an increase in the intensity of the IR spectrum by ~2–6 times and an increase in the width of the bands. The intensity in the range of 1700–3500 cm−1 increased, indicating an increase in the content of radicals as a result of irradiation. The amplitudes of the electron paramagnetic resonance signal from non-irradiated films increased from 3 × 103 to 5 × 103 as a result of uniaxial tension to fracture, indicating an increase in radicals in the material. The lines of the electron paramagnetic resonance spectrum shifted from 3475.0 cm−1 to 3512.5 cm−1, with a simultaneous decrease in the signal’s amplitude from 6 ×103 to 4 × 103, as a result of the electron irradiation of the films, followed by their subjection to tension. This was due to a decrease in the concentration of the radicals of the =N-H and –N-H2 groups until their disappearance and the formation of new ones.

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