Order-Parameter Temperature Dependences in Nanocomposites of Porous Glass–Sodium Nitrite

  • A. A. Naberezhnov
  • O. A. Alekseeva
  • P. Yu. Vanina
  • D. Yu. Chernyshov
  • A. A. Sysoeva
  • E. Rysiakiewicz-Pasek
Proceedings of the XXI National Conference on Magnetoelectrics Physics
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Abstract

Temperature dependences of the order parameter in nanocomposites based on porous borosilicate glasses with mean pore diameters of 20 and 46 nm and filled with sodium nitrite are studied via the diffraction of synchrotron radiation. The mean diffraction sizes of NaNO2 nanoparticles in the pores of these matrices and the temperatures of the transition of sodium nitrite to the ferroelectric state are determined. It is shown that the phase transition for these nanoparticles remains a first-order phase transition.

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Copyright information

© Allerton Press, Inc. 2018

Authors and Affiliations

  • A. A. Naberezhnov
    • 1
    • 2
  • O. A. Alekseeva
    • 2
  • P. Yu. Vanina
    • 2
  • D. Yu. Chernyshov
    • 3
  • A. A. Sysoeva
    • 1
  • E. Rysiakiewicz-Pasek
    • 4
  1. 1.Ioffe InstituteRussian Academy of SciencesSt. PetersburgRussia
  2. 2.Peter the Great St. Petersburg Polytechnic UniversitySt. PetersburgRussia
  3. 3.European Synchrotron Radiation FacilityGrenoble Cedex 9France
  4. 4.Institute of PhysicsWroclaw University of TechnologyWrocławPoland

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