Effect of Restricted Geometry on the Structure and Phase Transitions in Potassium Nitrate Nanoparticles
| Autor: | A. Hoser, A. Ciźman, Ewa Rysiakiewicz-Pasek, P. Yu. Vanina, A. A. Naberezhnov, A. A. Sysoeva |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Phase transition Nanocomposite Materials science Neutron diffraction Nanoparticle Geometry Potassium nitrate 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Ferroelectricity Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry Phase (matter) 0103 physical sciences 0210 nano-technology Phase diagram |
| Zdroj: | Physics of the Solid State. 60:442-446 |
| ISSN: | 1090-6460 1063-7834 |
| Popis: | The effect of restricted geometry and thermal prehistory of sample preparation on phase transitions in nanocomposites on base of porous glasses with average pore diameters 7 and 46 nm filled by potassium nitrate have been studied by X-rays and neutron diffraction. The nanoparticle sizes have been determined and phase diagrams (on cooling) for these nanoparticles have been described. It is shown that there is a critical nanoparticle size in the interval from 30 till 20 nm, at which in nanocomposite the ferroelectric phase is realized only regardless of preparation method. |
| Databáze: | OpenAIRE |
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