title: ÐÑÐ¾Ð±ÐµÐ½Ð½Ð¾ÑÑÐ¸ ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÐ½Ð¾Ð¹ ÑÐ²Ð¾Ð»ÑÑÐ¸Ð¸ ÐºÑÐ¸ÑÑÐ°Ð»Ð»Ð¸ÑÐµÑÐºÐ¾Ð¹ ÑÑÑÑÐºÑÑÑÑ Ð½Ð°Ð½Ð¾ÑÐ°ÑÑÐ¸Ñ Ð½Ð¸ÑÑÐ°ÑÐ° Ð½Ð°ÑÑÐ¸Ñ Ð² Ð¿Ð¾ÑÐ¸ÑÑÐ¾Ð¼ ÑÑÐµÐºÐ»Ðµ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Characteristics of the temperature evolution of the crystal structure of sodium nitrate nanoparticles in a porous glass
Creators: name: ÐÐµÐ³ÑÐ½, ÐÐ½Ð°ÑÑÐ°ÑÐ¸Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2021
Subjects: Ð½Ð°Ð½Ð¾ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ½ÑÐ¹ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»
Ð½Ð¸ÑÑÐ°Ñ Ð½Ð°ÑÑÐ¸Ñ
Ð¿Ð¾ÑÐ¸ÑÑÐ¾Ðµ ÑÑÐµÐºÐ»Ð¾
ÑÑÑÑÐºÑÑÑÐ½ÑÐ¹ Ð¿ÐµÑÐµÑ Ð¾Ð´
ÐºÑÐ¸ÑÐ¸ÑÐµÑÐºÐ¸Ð¹ Ð¸Ð½Ð´ÐµÐºÑ
nanocomposite material
sodium nitrate
porous glass
structure transition
critical index

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description: The present work is devoted to the analysis of diffraction patterns of synchrotron radiation scattering on the nanocomposite âsodium nitrate + porous glassâ with an average pores size of 7 nm. The spectra were measured in a wide temperature range of 290-590 K. Analysis of spectra was performed on heating up to the temperatures near the critical temperature only. It has been shown that sodium nitrate nanoparticles have the same structure as bulk material in the temperature range under study. Characteristic sizes of the nanoparticles and their temperature dependences were determined on heating. It was shown that nanoparticle size increases on heating up to the temperatures near the critical temperature. Temperature dependences of lattice parameters, direct cell volume and linear thermal coefficients have been obtained on heating. Comparison with bulk material was done. This preliminary analysis will allow determining the structure transition temperature and the temperature dependence of the critical index using temperature dependences of integral intensities of superstructure diffraction peaks.