prikaz prve stranice dokumenta Sol-gel sinteza složenih metalnih oksida sa strukturama dvostrukih i trostrukih perovskita
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master's thesis
Sol-gel sinteza složenih metalnih oksida sa strukturama dvostrukih i trostrukih perovskita
Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2020. urn:nbn:hr:182:156468
Sekulić, Marina
Josip Juraj Strossmayer University of Osijek
Department of Chemistry

Institutional repository: Repository of the Department of Chemistry, Osijek

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Sekulić, M. (2020). Sol-gel sinteza složenih metalnih oksida sa strukturama dvostrukih i trostrukih perovskita (Master's thesis). Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry. Retrieved from https://urn.nsk.hr/urn:nbn:hr:182:156468

Sekulić, Marina. "Sol-gel sinteza složenih metalnih oksida sa strukturama dvostrukih i trostrukih perovskita." Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2020. https://urn.nsk.hr/urn:nbn:hr:182:156468

Sekulić, Marina. "Sol-gel sinteza složenih metalnih oksida sa strukturama dvostrukih i trostrukih perovskita." Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2020. https://urn.nsk.hr/urn:nbn:hr:182:156468

Sekulić, M. (2020). 'Sol-gel sinteza složenih metalnih oksida sa strukturama dvostrukih i trostrukih perovskita', Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, accessed 21 December 2024, https://urn.nsk.hr/urn:nbn:hr:182:156468

Sekulić M. Sol-gel sinteza složenih metalnih oksida sa strukturama dvostrukih i trostrukih perovskita [Master's thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry; 2020 [cited 2024 December 21] Available at: https://urn.nsk.hr/urn:nbn:hr:182:156468

M. Sekulić, "Sol-gel sinteza složenih metalnih oksida sa strukturama dvostrukih i trostrukih perovskita", Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, Osijek, 2020. Available at: https://urn.nsk.hr/urn:nbn:hr:182:156468

Metadata
TitleSol-gel sinteza složenih metalnih oksida sa strukturama dvostrukih i trostrukih perovskita
Title (english)Sol-gel synthesis of complex metal oxides with double and triple perovskite-type structure
AuthorMarina Sekulić
MentorIgor Đerđ (mentor)
MentorAnamarija Stanković (komentor)
Committee memberElvira Kovač-Andrić (predsjednik povjerenstva)
Committee memberIgor Đerđ (član povjerenstva)
Committee memberAnamarija Stanković (član povjerenstva)
GranterJosip Juraj Strossmayer University of Osijek
Department of Chemistry
Osijek
Defense date and country2020-09-11, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Abstract
Perovskit je naziv za porodicu spojeva kristalne strukture čija je opća formula ABX3 gdje je A kation većeg ionskog promjera, B kation manjeg ionskog promjera, a X halogenidni anion ili kisik. U ovome diplomskom radu citratnom dvostupanjskom sol – gel metodom sintetizirani su sloţeni metalni oksidi perovskitne strukture \( Sr_{3}Co_{2}TeO_{9}\), \( Ba_{3}Co_{2}TeO_{9}\), \( Sr_{3}NiTeO_{6}\) te \( Ba_{2}NiTeO_{6}\). Nakon prvostupanjskog miješanja prekursora i kompleksacije citratnom kiselinom, u drugom koraku su osušeni uzorci kalcinirani pri 600 ˚C i 1000 ˚C u peći u struji zraka s temperaturom zagrijavanja 2 ˚C/min. Uzorci su karakterizirani cikličkom voltametrijom, infracrvenom spektroskopijom (FT – IR), termogravimetrijskom analizom (TGA), rentgenskom difrakcijom na prahu (PXRD) te su im odreĎena magnetska svojstva SQUID mjerenjima. UtvrĎeno je da su sintetizirani spojevi visoke čistoće te da su veličine kristalita male unatoč visokim temperaturama kalciniranja. \( Sr_{3}NiTeO_{6}\) i \( Ba_{2}NiTeO_{6}\) pokazuju antiferomagnetska svojstva.
Abstract (english)
Perovskite is the name for a family of compounds with crystal structure of the general formula ABX3 where A is a cation of a larger ionic radius, B is a cation of a smaller ionic radius and X stands for halide or oxide anion. In this diploma thesis, complex metal oxides of perovskite type crystal structure \( Sr_{3}Co_{2}TeO_{9}\), \( Ba_{3}Co_{2}TeO_{9}\), \( Sr_{3}NiTeO_{6}\) and \( Ba_{2}NiTeO_{6}\) were synthesized by the citrate sol - gel route. Dried samples were calcined at 600 °C and 1000 °C in a furnace with air flow and at a temperature rate of 2 °C per minute. Samples were characterized by the cyclic voltammetry, infrared spectroscopy (FT –IR), thermogravimetric analysis (TGA), Powder X – ray diffraction (PXRD) while magnetic ground state has been determined using SQUID measurement. Obtained results have revealed that synthesized materials are of high purity and their average crystallite size has remained in nanometer range despite the high calcination temperatures. \( Sr_{3}NiTeO_{6}\) and \( Ba_{2}NiTeO_{6}\) posses antiferromagnetic properties.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:182:156468
ProjectNumber: HRZZ-IP-2016-06-3115
Title: Istraživanje složenih multiferoičnih materijala pripravljenih metodama otopinske kemije
Leader: Igor Đerđ
Jurisdiction: Croatia
Funder: HRZZ
Study programmeTitle: Graduate University Study of Chemistry; research direction
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra kemije (magistar/magistra kemije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2020-10-30 10:51:05