Naslov
Synthesis and structural chemistry of cation ordered double perovskite via novel sol-gel route

Autori
Suraj, Mal ; Nuskol, Marko ; Popović, Jasminka ; Skoko, Željko ; Bijelić, Mirjana ; Đerđ, Igor

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
29th European Crystallographic Meeting : abstracts ; u: Acta Crystallographica Section A71 (2015) / - , 2015, S337-s337

Skup
European Crystallographic Meeting (29 ; 2015)

Mjesto i datum
Rovinj, Hrvatska, 23.08.2015. - 30.08.2015

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
sol-gel ; tellurates

Sažetak
Sol-gel methodes provide an advantages in respect to manipulation over stochiometry for preparation of materials within advanced technologies including magnetism, dielectric behavior, conductivity or even multiferroic behavior. The stochiometric changes can lead to obtain double perovskite with general formula A2B'B''O6 which are widely studied so far [1-3], where six coordinate sites are occupied by B' and B'', while 12-coordinate sites are occupied by A cation. Additionaly another interesting class of multiferroic compounds with more complex geometry (A3B'2B''O9) have been investigated (Sr3Fe2MoO9 and Sr3Fe2UO9) and reported with strong ferromagnetic properties with TC well above room temperature [4-5]. The major drawback while synthesizing above mentioned metal oxides is the tedious solid state synthesis which require high temperature calcination and more time for phase purity. Here we report a successful synthesis of double perovskite Ba3Fe2TeO9 and Sr3Fe2TeO9 by novel environmental friendly 'sol-gel' process using citric acid as complexing medium followed by calcination step. Both compoundshave been studied by powder X-ray diffraction (Rietveld), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and magnetic measurements.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA