S.M., Kleshchcva and E.A., Kuznetsov and А.В. , Rinkevich and М.I., Samoilovitch and V.V., Ustinov (2009) Magnetic Resonance in Opal Matrixes with 3D-Nanostructure of Nickel-Zinc and Manganese-Zinc Ferrite Nanoparticles. Journal of NANO and MICROSYSTEM TECHNIQUE (1).
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Interaction of electromagnetic waves with nanoheterostructures obtained by doping of opal matrixes with nickel-zinc and manÂganese-zinc ferrite has been studied. The opal matrixes contain of Si02 nanospheres with diameter about 250 nm with ferrite nanoparticles in the nanosphere voids. The measurements are carried out in frequency range from 26 to 38 GHz in magnetic fields up to 13 kOe. Variation in magnetic field of the transmission coefficient module of the TE10 mode in rectangular waveguide containing a doped opal matrix is studied. The nanstructure sample is placed into the waveguide. Field dependencies of the transmission and reflection coefficients are analyzed. It has been shown that the magnitude and the field dependences of the coefficients are similar each other. Measurements of transmission coefficient module through a rectangular cavity with a doped opal matrix sample have been carried out. It was shown that magnetic resonance in the doped matrix is the main reason for microwave variations. Besides the resonances belonging to the acoustic branch of magnetic resonance spectrum, other resonances have been observed to appear which do not relevant to the acoustic branch. Transmittance of electromagnetic waves through nanocomposite sample has been analyzed and its magnetic field dependency.
|Deposited By:||Prof. Alexey Ivanov|
|Deposited On:||11 Nov 2009 07:51|
|Last Modified:||11 Nov 2009 08:00|
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