Effect of substitution on the mechanism of conductivity of ultra dispersed lithium - iron spinel, substituted with magnesium ions

Authors B.K. Ostafiychuk1,2 , L.S. Kaykan1 , J.S. Mazurenko2 , B.Ya. Deputat3, S.V. Koren2

1 G.V. Kurdyumov Institute for Metal Physics, N.A.S. of Ukraine, 36, Academician Vernadsky Boulevard, UA-03680 Kyiv-142, Ukraine

2 Vasyl Stefanyk Precarpathian national university, 57, Shevchenko Str., 76018 Ivano-Frankivsk, Ukraine

3 Ivano-Frankivsk National Technical University of Oil and Gas, 15, Karpatska Str., 76019 Ivano-Frankivsk, Ukraine

Issue Volume 9, Year 2017, Number 5
Dates Received 15 February 2017; revised manuscript received 14 April 2017; published online 16 October 2017
Citation B.K. Ostafiychuk, L.S. Kaykan, J.S. Mazurenko, et al., J. Nano- Electron. Phys. 9 No 5, 05018 (2017)
DOI 10.21272/jnep.9(5).05018
PACS Number(s) 71.20.Nr, 72.15.Eb, 72.20.Pa, 77.22.Gm, 73.22.– f, 76.80.+ y
Keywords Nanoferrite, Conduction mechanism, Impedance (12) , Activation energy (7) .
Annotation Magnesium-substituted lithium ferrites, general formula, where , were synthesized by sol-gel autocombusting method. The temperature-frequency dependences of the conductivity of the synthesized systems are obtained in the frequency range from 0.01 to 105 Hz and in the temperature range from room temperature to 723 K. Calculated values of the activation energies showed that, during substitution, activation energies values of the samples increase twice compared to the un-substituted samples.

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