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The properties of Nb/α Si/Nb planar Josephson junctions with various degrees of doping of the amorphous silicon layer are experimentally studied. Tungsten is used as a doping impurity. The properties of the Josephson junctions are shown to change substantially when the degree of doping of the α Si layer changes: a current transport mechanism and the shape of the current-voltage characteristic of the junctions change. Josephson junctions with SNS type conduction are formed in the case of a fully degenerate α Si layer. The properties of such junctions are described by a classical resistive model. Josephson junctions with a resonance mechanism of current transport through impurity centers are formed at a lower degree of doping of the α Si layer. The high frequency properties of such junctions are shown to change. The experimental results demonstrate that these junctions are close to SINIS type Josephson junctions.

The effect of a uniform magnetic field on the elastic and viscous properties of new magnetocontrolled materials (magnetoelastics) was studied. It was found that the application of a magnetic field leads to a considerable rise both in Young's modulus and in the viscosity of these materials. We investigated the samples prepared both in the absence of magnetic field and in the magnetic field applied during magnetoelastic curing.

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