Translation. Region: Russian Federation –
Source: Peter the Great St. Petersburg Polytechnic University –
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At the end of November, a representative of SPbPU took part in the International Conference "Congress of Users of the SKIF Center for Collective Use: Advanced Research Using Synchrotron Radiation," held in Akademgorodok, Novosibirsk.
The Siberian Ring Photon Source Shared Use Center (SKIF) is a generation 4 synchrotron radiation (SR) source being built in the Koltsovo science city near Novosibirsk. The SKIF accelerator complex consists of a 200 MeV electron linear accelerator, a 3 GeV booster synchrotron, and a storage ring. The 3 GeV relativistic electron storage ring, with a perimeter of 476 m and an ultra-low calculated horizontal emittance of 73.2 pcm rad, will deliver SR beams with a peak brightness in the range from 10 eV to 100 keV to 30 experimental stations. For photon energies of ~1.5 keV, the source emittance approaches the wave (diffraction) limit, ensuring a high degree of SR coherence, which expands the potential of the research complex. The SKIF Center for Collective Use's infrastructure will be used to conduct world-class research in various fields of physics, chemistry, materials science, molecular biology, medicine, and other disciplines, with an emphasis on the most breakthrough, economically and socially significant multidisciplinary tasks.
The congress provides a broad discussion platform and a meeting place for representatives of the SKIF Center for Collective Use, developers of unique scientific equipment, and future users. The congress program included plenary lectures, oral and poster presentations, and roundtable discussions on "SKIF Center for Collective Use Stations" and "Organizational Aspects of SKIF Center for Collective Use Work."
Professor of the Higher School of Engineering and Physics and Advisor to the Rector's Office of SPbPU Alexey Filimonov spoke at the round table "Organizational Aspects of the SKIF Center for Collective Use," where issues of organizing and planning work on the devices were discussed.
A few days earlier, Alexey Filimonov delivered a plenary talk at the international scientific conference "Instrument Engineering-2025" in Minsk, organized by the Belarusian National Technical University with the participation of the National Academy of Sciences of the Republic of Belarus. The topic of the talk, "The Effect of Electric Field on Phase Transitions in PZT Solid Solutions," was directly related to the theme of the SKIF congress, as the scientific results presented in it were obtained using synchrotron sources using the SR scattering method.
Antiferroelectrics, particularly lead zirconate and lead zirconate titanate-based solid solutions (PZT, PbZr(1-x)TixO3) with a low lead titanate content, are the best-known antiferroelectrics and are of interest in the development of fast capacitor-type electrical energy storage devices and electrocaloric cooling systems. The existence of so-called antiphase domain walls (APDWs) in pure lead zirconate has recently been experimentally demonstrated. APDWs in antiferroelectrics are flat domain walls several nanometers wide with nonzero polarization. These structures have proven to be of great interest as the basis for nonvolatile memory devices with ultrahigh data recording density. This paper examines the influence of electric fields on phase transitions in PZT and the possibility of controlling the domain structure of the antiferroelectric phase.
The conference brought together over 600 delegates from nine countries. Following successful negotiations with representatives of leading Belarusian universities (BSU, BNTU, and BSUIR), an agreement was reached to conduct joint research, and a draft proposal for a joint project was prepared.
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