Review article by the team of dr hab. T. Pietrzak in Nanomaterials

a) Microstructure of LiFe0.80V0.08PO4 nanocrystallized glass at 480 ° C, imaged with transmission electron microscopy (bright spots - LiFePO4 nanocrystallites, dark areas - glassy phase; (b) close-up to the border of the crystal grain and the glassy matrix.

A special issue of Nanomaterials (IF = 5.076) published an article entitled “Towards higher electric conductivity and wider phase stability range via nanostructured glass-ceramics processing” [https://doi.org/10.3390/nano11051321].

Its authors: dr hab. Eng. Tomasz Pietrzak, prof. Marek Wasiucionek and prof. Jerzy Garbarczyk, reviewed the state of knowledge and the advancement of research on nanocrystallization conducted in the world, including own research carried out at the Department of Solid Body Ionics of the Warsaw University of Technology. Glass nanocrystallization is a process which results in a controlled crystallization of the initial glass and the formation of a nanomaterial consisting of nano-sized crystalline grains surrounded by an amorphous phase. In the light of current knowledge, the observed much higher electrical conductivity of such materials is mainly related to the presence of strongly defective intergranular regions. Extending the temperature range of stability of high-temperature phases (such as alpha-AgI or delta-Bi2O3), present in the form of nanocrystallites embedded in the amorphous phase, even at room temperature, includes the result of the strong interaction of nanocrystallites of these phases with the surrounding amorphous phase.

Also in Nanomaterials, the work of Dr. Eng. Wioleta Ślubowska, dr inż. Konrad Kwatek and prof. Lionel Montagne and his colleagues from Universite Lille 1 (France) Fri. "B2O3-Doped LATP Glass-Ceramics Studied by X-ray Diffractometry and MAS NMR Spectroscopy Methods." The article concerns the structural and NMR studies of B2O3-LATP glass-ceramic composites with ionic conductivity https://doi.org/10.3390/nano11020390.

Both teams carry out research projects under the IDUB POB TechMat.