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    Wyświetlanie 1-4 z 4
    Tytuł:
    Multivoltaic GaSe clathrate as new hybrid functional nanostructure
    Autorzy:
    Ivashchyshyn, Fedir
    Pidluzhna, Anna
    Calus, Dariusz
    Hryhorchak, Orest
    Chabecki, Piotr
    Makarchuk, Oleksandr
    Powiązania:
    https://bibliotekanauki.pl/articles/2173600.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    impedance analysis
    GaSe
    multiferroic
    thermogalvanic effect
    negative capacity
    analiza impedancji
    multiferroiki
    efekt termogalwaniczny
    pojemność ujemna
    Opis:
    The electrical properties and behaviour in constant magnetic field of fourfold expanded GaSe matrix intercalated with SmCl 3 guest were investigated by means of impedance spectroscopy and cyclic voltammetry. It was determined that the synthesized GaSe< SmCl 3> clathrate of 4-fold expansion demonstrates the coexistence of mechanisms of generation, transformation and accumulation of electric energy on a quantum level. These mechanisms are driven from external sources of magnetic, thermal and electric field without Faradaic reactions. Therefore, investigated GaSe< SmCl 3> structure is of great attraction in multivoltaics as a prototype of new class of materials. Quantum mechanical model of electro motive force of spin nature is proposed. The main focus of work lies in the prospects of synthesized clathrates for the development of power nanosources and gyrator-free delay nanolines controlled by means of magnetic field.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2021, 69, 2; art. no. e136726
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of optical illumination and magnetic field on the electroconductive and polarization properties of clathrate GaSe>, synthesized under lighting
    Autorzy:
    Ivashchyshyn, Fedir
    Maksymych, Vitaliy
    Calus, Dariusz
    Matulka, Dariya
    Chabecki, Piotr
    Kunynets, Andrii
    Powiązania:
    https://bibliotekanauki.pl/articles/2173684.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    GaSe
    thiourea
    anthracene
    clathrate
    impedance spectroscopy
    quantum capacitance
    memristive effect
    tiomocznik
    antracen
    klatrat
    spektroskopia impedancyjna
    pojemność kwantowa
    efekt memrystyczny
    Opis:
    GaSe> clathrate with a hierarchical subhost> type architecture was formed under illumination and its electrically conductive properties were studied. The method of impedance spectroscopy studied the frequency behavior of the real and imaginary parts of the complex total impedance in the range of 10 -3-10 6 Hz. The measurements were performed under normal conditions, in a permanent magnetic field (220 kA/m), or under light illumination (for a standard solar spectrum AM 1.5 G total available power is 982 W/m 2). The structure of the impurity energy spectrum at the Fermi level was investigated by the method of thermostimulated discharge in the temperature range from 240 to 340 K. Using Jebol-Pollack theoretical approaches based on impedance spectra, the parameters of the impurity energy spectrum were calculated, such as the density of states at the Fermi level, the jump radius , the scatter of trap levels near the Fermi level and the real density of deep traps. As evidenced by studies, illumination during clathrate synthesis, forms an internal electret polarization, which leads to abnormal behavior of the photoresistive effect and to the appearance of the memristive effect. The imposition of a permanent magnetic field during the measurement of complex resistance leads to the appearance of quantum capacitance.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2022, 70, 5; art. no. e143104
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Multivoltaic GaSe clathrate as new hybrid functional nanostructure
    Autorzy:
    Ivashchyshyn, Fedir
    Pidluzhna, Anna
    Calus, Dariusz
    Hryhorchak, Orest
    Chabecki, Piotr
    Makarchuk, Oleksandr
    Powiązania:
    https://bibliotekanauki.pl/articles/2128145.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    impedance analysis
    GaSe
    multiferroic
    thermogalvanic effect
    negative capacity
    analiza impedancji
    multiferroiki
    efekt termogalwaniczny
    pojemność ujemna
    Opis:
    The electrical properties and behaviour in constant magnetic field of fourfold expanded GaSe matrix intercalated with SmCl 3 guest were investigated by means of impedance spectroscopy and cyclic voltammetry. It was determined that the synthesized GaSe< SmCl 3> clathrate of 4-fold expansion demonstrates the coexistence of mechanisms of generation, transformation and accumulation of electric energy on a quantum level. These mechanisms are driven from external sources of magnetic, thermal and electric field without Faradaic reactions. Therefore, investigated GaSe< SmCl 3> structure is of great attraction in multivoltaics as a prototype of new class of materials. Quantum mechanical model of electro motive force of spin nature is proposed. The main focus of work lies in the prospects of synthesized clathrates for the development of power nanosources and gyrator-free delay nanolines controlled by means of magnetic field.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2021, 69, 2; e136726, 1--5
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mechanisms of electrical conductivity, quantum capacity and negative capacitance effects in InSe nanohybrid
    Autorzy:
    Ivashchyshyn, Fedir
    Maksymych, Vitaliy
    Calus, Dariusz
    Klapchuk, Myroslava
    Baryshnikov, Glib
    Galagan, Rostislav
    Litvin, Valentina
    Chabecki, Piotr
    Bordun, Ihor
    Powiązania:
    https://bibliotekanauki.pl/articles/2173564.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    InSe
    intercalation
    hierarchical structures
    impedance spectroscopy
    density of states
    negative capacity
    struktury hierarchiczne
    spektroskopia impedancyjna
    ujemna pojemność
    gęstość stanów
    wtrącenie
    Opis:
    In this work, we present findings on the syntheses and study of properties of InSe nanohybrid. The introduction of guest component in GaSe matrix leads to an increase in inhomogeneities, which is clearly confirmed by the strengthening of the low-frequency horizontal branch of Nyquist diagrams. A constant magnetic field counteracts this effect and changes the behavior of the impedance hodograph at low frequencies to the opposite. Illumination leads to a colossal increase in quantum capacitance, which is clearly demonstrated in the Nyquist diagram. For the synthesized InSe nanohybrid the interesting behavior of the current-voltage characteristic is reported. As a result of studies of the synthesized InSe nanohybrid the effect of “negative capacity” is observed, the magnitude of which can be controlled by the electric field. Based on the constructed impedance model and proposed N-barrier model, the physical mechanisms of the investigated processes are suggested.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2022, 70, 1; e139958, 1--8
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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