Temperature and frequency dependence of electric conductivity in nano-grained SiO2 exposed to neutron irradiation

Influence of neutron irradiation and temperature on the electric conductivity of SiO2 nanoparticles

“…1e3. The obtained results show that at studied T ¼ 100 ÷ 400 K range of temperature and frequency during irradiation process t ¼ 5 ÷ 20 h as measurement temperature and alternating current frequency rises, then increases the electric conductivity of nano silica [28].…”

“…Although conductivity increases in direct proportion to temperature at 100e300 K range of temperature, conductivity does not change after approximately 330 K of temperature at the all 0.09 Hz, 1.1 Hz, 1.9 Hz and 15 Hz frequencies. In all cases, conductivity increases with increase of irradiation term and this difference becomes more severe at 200e350 K range of temperature [28].…”

“…Taking large frequency range and majority of constant values into account we have distributed frequency ranges into three groups (it has been reviewed temperature dependence of electric conductivity at 12 frequency fields that 4 frequencies are placed in each group). We was study temperature dependence of electric conductivity of nano silica for only 6 stable frequency, but now we get more details with 12 stable frequency and get few different result in conclusion part of this article [28]. Conditionally the first (including 4 stable frequency) group can be characterized as low frequency (0.09 Hz, 1.…”

“…Thus, we can use Arrhenius equation for s 1 and s 2 figures of electric conductivity consistent to T 1 and T 2 ranges of temperature [28].…”

Study of blend composition of nano silica under the influence of neutron flux

“…From previous studies it is known that the specific surface area of nanomaterial used in the experiment is 160 m 2 /g, dimensions are 20 nm and some parameters of the used sample has been studied [ 17 - 19 ]. In the presented work the samples have been irradiated by neutron flux 2×10 13 n/cm 2 s in central channel (Channel A1) of TRIGA Mark II light water pool type research reactor at full power (250 kW) in “Reactor Centre” of Jozef Stefan Institute (JSI) in Ljubljana city of Slovenia.…”