title: Sol-Gel-Prepared Nanoparticles of Mixed Praseodymium Cobaltites-Ferrites.
abstract: Two series of nanocrystalline powders of PrCo1 - x Fe x O3 (x = 0.1, 0.3, 0.5, 0.7 and 0.9) of high purity were obtained by sol-gel citrate method at 700 and 800 °C. The formation of continuous solid solution with an orthorhombic perovskite structure (sp. group Pbnm) was observed. A peculiarity of the PrCo1 - x Fe x O3 solid solution is the lattice parameter crossovers, which occurred at certain compositions and revealed in the pseudo-tetragonal or pseudo-cubic metric. An average crystallite size of the PrCo1 - x Fe x O3 samples estimated from the analysis of the angular dependence of the X-ray diffraction (XRD) line broadening varies between 30 and 155 nm, depending on the composition and synthesis temperature.
authors: Semiconductor Electronics Department, Lviv Polytechnic National University, 12 Bandera Street, 79013, Lviv, Ukraine. olgakharko@ukr.net.
authors: Olga
authors: O
authors: Pekinchak
authors: Semiconductor Electronics Department, Lviv Polytechnic National University, 12 Bandera Street, 79013, Lviv, Ukraine. crystal-lov@polynet.lviv.ua.
authors: Leonid
authors: L
authors: Vasylechko
authors: Department of Chemical Technology of Silicates, Lviv Polytechnic National University, 12 Bandera Street, 79013, Lviv, Ukraine. ira_lutsuk@ukr.net.
authors: Iryna
authors: I
authors: Lutsyuk
authors: Department of Chemical Technology of Silicates, Lviv Polytechnic National University, 12 Bandera Street, 79013, Lviv, Ukraine. sylikat@polynet.lviv.ua.
authors: Yaroslav
authors: Y
authors: Vakhula
authors: Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Str. 40, 01187, Dresden, Germany. prots@cpfs.mpg.de.
authors: Yuri
authors: Y
authors: Prots
authors: Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Str. 40, 01187, Dresden, Germany. Wilder.Carrillo-Cabrera@cpfs.mpg.de.
authors: Wilder
authors: W
authors: Carrillo-Cabrera
keywords: Crystal structure; Mixed cobaltites-ferrites; Nanopowders; Perovskites