Magnetically induced electrokinetic phenomena in the surface layers of zirconia nanoparticles

Doroshkevych, Oleksandr; Shylo, Artem; Kirillov, A. K.; Saprykina, A. V.; Даниленко, И. А.; Troitskiy, G. A.; Konstantinova, T. E.; Zelenyak, T. Yu.

doi:10.1134/s1027451015030209

Cited by 3 publications

(3 citation statements)

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“…Here, the coefficient a is related to the effective coefficient of diffusion/desorption by equation D eff = a·r 2 , where r —characteristic length of a particle path during the diffusion process. Then, the value of the coefficient a has been determined, and assuming the Arrhenius dependence of the coefficient of diffusion/desorption D eff from temperature, we can calculate the activation energy by the formula [ 10 ]:

where R is the universal gas constant.…”

Section: Resultsmentioning

confidence: 99%

“…The works [ 10 , 11 ] indicate the presence of electron charge carriers associated with adsorbates in the near-surface region of nanoparticles, which determine the surface capacitance. With small particle sizes, this capacitance can be high, and the operating temperature and frequency during electrolyte selection can reach large values.…”

Section: Introductionmentioning

confidence: 99%

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Electric Energy Storage Effect in Hydrated ZrO2-Nanostructured System

et al. 2022

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The dimensional effect of electric charge storage with a density of up to 270 μF/g by the hydrated ZrO2-nanoparticles system was determined. It was found that the place of localization of different charge carriers is the generalized heterophase boundary-nanoparticles surface. The supposed mechanism of the effect was investigated using the theory of dispersed systems, the band theory, and the theory of contact phenomena in semiconductors, which consists of the formation of localized electronic states in the nanoparticle material due to donor–acceptor interaction with the adsorption ionic atmosphere. The effect is relevant for modern nanoelectronics, microsystem technology, and printed electronics because it allows overcoming the basic physical restrictions on the size, temperature, and operation frequency of the device, caused by leakage currents.

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where R is the universal gas constant.…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electric Energy Storage Effect in Hydrated ZrO2-Nanostructured System

et al. 2022

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“…This, first of all, leads to recharge of the surface and localization in the near-surface region of nanoparticles of charge carriers. In the acceptor nature of the adsorption electronic state, the surface is charged negatively in a thin layer (Debye screening length) L = f (ε, T, n) near the surface, and a p-type space charge region (SCR) is formed [30]. This is shown in an increase in the conductivity of the near-surface layer of nanoparticles and the overall conductivity of the system [22], and in the appearance of a relatively high electrical capacity in the nanopowder system and the possibility of charge exchange with the external environment [31].…”

Section: The Nature Of the Electronic Component In Ionic Nanocrystalsmentioning

confidence: 99%

The Rectifying Contact of Hydrated Different Size YSZ Nanoparticles for Advanced Electronics

et al. 2022

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The paper considers the new effects of the nanoscale state of matter, which open up prospects for the development of electronic devices using new physical principles. The contacts of chemically homogeneous nanoparticles of yttrium-stabilized zirconium oxide (ZrO2—x mol% Y2O3, x = 0, 3, 4, 8; YSZ) with different sizes of 7.5 nm and 9 nm; 7.5 nm and 11 nm; and 7.5 nm and 14 nm, respectively, was studied on direct current using nanostructured objects in the form of compacts obtained by high-hydrostatic pressure (HP-compacts of 300MPa). A unique size effect of the nonlinear (rectifying-type contact) dependence of the electrical properties (in the region U < 2.5 V, I ≤ 2.7 mA) of the contact of different-sized YSZ nanoparticles of the same chemical composition is revealed, which indicates the possibility of creating semiconductor structures of a new type (homogeneous electronics). The electronic structure of the near-surface regions of nanoparticles of studied oxide materials and the possibility of obtaining specifically rectifying properties of the contacts were studied theoretically. Models of surface states of the Tamm-type are constructed considering the Coulomb long-range action. The discovered energy variance and its dependence on the curvature of the surface of nanoparticles made it possible to study the conditions for the formation of a contact potential difference in cases of nanoparticles of the same radius (synergistic effect), different radii (doped and undoped variants), as well as to discover the possibility of describing a group of powder particles within the Anderson model. The determined effect makes it possible to solve the problem of diffusion instability of semiconductor heterojunctions and opens up prospects for creating electronic devices with a fundamentally new level of properties for use in various fields of the economy and breakthrough critical technologies.

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