Sequential layers of magnetic / non-magnetic material in pores:
XRD spectrum of Ni-Cu layers formed in pores of SiO2 layer. Reflects are registered which are attributed to the FCC-phase of nickel (unit cell parameter a = 0,352 nm), FCC-phase of copper (a = 0,362 nm) and solid solution phase of Ni0,5Cu0,5 compound with the unit cell parameter а = 0,357 nm (fig. 1).
Fig.1. Radiographs of the nickel-copper layers formed in the pores of the layer SiO2.
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Atomic force microscopy (AFM) images of the surface of n-Si/SiO2/Ni sample irradiated by 197Au26+ ions with energy 350 MeV and fluence 5×108 cm-2: (а) – phase-contrast image; (b) – distribution bar chart of nickel ougrowth heights within the scanned region.
SEM images of n-Si/SiO2/Ni sample, irradiated by 131Xe17+ ions with energy 350 MeV and fluence 5×108 cm-2: (c) top view; (d) cross-sectional view.
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Creation of latent tracks by Swift Heavy Ions (SHI)
Si/SiO2 substrate
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Latent SHI tracks
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SHI irradiation
Au26+, Xe17+, U28+
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Au26+, Xe17+ Energy 350 MeV, Fluence 5х108 cm-2
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- The needs of medical and scientific research institutions of the Republic of Belarus in liquid helium;
- Bank of allograft cryopreservation (biological prosthetic heart valves) for cardiac surgery;
- Providing medical centers with liquid nitrogen for eye operations, cosmetic and cryotherapy;
- Providing opportunities to conduct research organizations of low-temperature research;
- Enabling organizations to conduct research of low-temperature research;
- Provide technical and advisory assistance in the manufacture of cryogenic equipment and research facilities.
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Double perovskite Sr2FeMoO6-δ
The main advantages of Sr2FeMoO6-δ (SFMO) for their practical application:
- Large values of MR at high T and low fields H;
- High values of Тс=400 - 470 K;
- ~100% spin polarization of conduction electrons;
- A simple crystal structure, and sufficient thermal stability for use in various types of highly sensitive magnetic field sensors.
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Measurements of temperature dependences of the deviation from Matthiessen's rule (DMR) on single crystals of Al-Y and Al-Ga alloys at the change of concentration of impurities as well as the magnitude and direction of magnetic field revealed that:
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Based on experimental studies of quantum oscillations magnitotermoeds alloy Al-Ga establish some regularities of the dynamics of conduction electrons under magnetic breakdown: proved the coherent nature of magnetic breakdown, which leads to interference of electron waves on parallel paths open. |
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