. . . . "2007-01-01+01:00"^^ . . "2009-12-31+01:00"^^ . . "2009-04-22+02:00"^^ . "V r\u00E1mci grantov\u00E9ho projektu se poda\u0159ilo z\u00EDskat hodnoty termodynamick\u00FDch funkc\u00ED 35 r\u016Fzn\u00FDch multikomponentn\u00EDch oxid\u016F. Z t\u011Bchto dat dopln\u011Bn\u00FDch \u00FAdaji z literatury byla vytvo\u0159ena po\u010D\u00EDta\u010Dov\u00E1 datab\u00E1ze pou\u017Eiteln\u00E1 k v\u00FDpo\u010Dt\u016Fm bin\u00E1rn\u00EDch a tern\u00E1rn\u00EDch f\u00E1zov\u00FDch diagram"@cs . "12"^^ . "12"^^ . "1"^^ . " Mixed oxides" . . . "2015-01-22+01:00"^^ . . "0"^^ . . "."@en . "0"^^ . "Thermochemical properties of lead-free ferroelectric oxides available for FeRAM fabrication"@en . . . . "Podstatou projektu jsou experiment\u00E1ln\u00ED stanoven\u00ED, teoretick\u00E9 v\u00FDpo\u010Dty a empirick\u00E9 odhady z\u00E1kladn\u00EDch termodynamick\u00FDch funkc\u00ED sm\u011Bsn\u00FDch oxid\u016F ze syst\u00E9mu Bi2O3-SrO-TaO-Nb2O5 a d\u00E1le termodynamick\u00E9 v\u00FDpo\u010Dty, na jejich\u017E z\u00E1klad\u011B bude posouzena termodynamick\u00E1 stabilita f\u00E1z\u00ED Bi2SrTa2O9 a Bi2SrNb2O9 a zpracov\u00E1n termodynamick\u00FD model procesu depozice vrstev t\u011Bchto oxid\u016F z\u00A0plynn\u00E9 f\u00E1ze metodou MOCVD. Budou p\u0159ipraveny polykrystalick\u00E9 vzorky vybran\u00FDch sm\u011Bsn\u00FDch oxid\u016F a r\u016Fzn\u00FDmi kalorimetrick\u00FDmi technikami m\u011B\u0159eny jejichtepeln\u00E9 kapacity, relativn\u00ED entalpie a slu\u010Dovac\u00ED entalpie. Pro teoretick\u00E9 ab-initio v\u00FDpo\u010Dty bude vyu\u017E\u00EDv\u00E1n po\u010D\u00EDta\u010Dov\u00FD program Wien2k, kter\u00FD je zalo\u017Een na metod\u011B LAWP (linearized augmented plane waves). Chyb\u011Bj\u00EDc\u00ED data budou odhadnuta na z\u00E1klad\u011B st\u00E1vaj\u00EDc\u00EDch\u010Di nov\u011B navr\u017Een\u00FDch odhadov\u00FDch metod. Z\u00A0t\u011Bchto dat dopln\u011Bn\u00FDch o dostupn\u00E9 \u00FAdaje z\u00A0literatury bude vytvo\u0159ena po\u010D\u00EDta\u010Dov\u00E1 datab\u00E1ze, kter\u00E1 bude jako kompatibiln\u00ED modul za\u010Dlen\u011Bna do po\u010D\u00EDta\u010Dov\u00E9ho programu FactSage. Ten bude spolu s\u00A0vlastn\u00EDm programem CHEMEQ" . "The main aim of the proposed project is experimental determination, theoretical calculation and empirical estimation of the thermodynamic properties of mixed oxides in the system Bi2O3-SrO-Ta2O5-Nb2O5. Moreover various thermodynamic calculations will be performed which results will be employed for the thermodynamic simulation of thin layers deposition of Bi2SrTa2O9 and Bi2SrNb2O9 by the MOCVD method. Powder samples of investigated oxides will be prepared by the standard ceramic procedure, their phase composition will be determined by XRD and their stoichiometry will be analyzed by XRF spectroscopy, EMPA and/or AAS. The heat capacity and the heat content of the prepared samples will be measured by various calorimetric techniques. The computer code Wien2k based on the linearized augmented plane waves method (LAPW) will be employed for the ab-initio calculations. The obtained data together with the reliable data from literature will be simultaneously optimized using the OptiSage module of the"@en . . " Ab-initio calculations" . "GA104/07/1209" . " Calorimetry" . " Enthalpy" . . "Termochemick\u00E9 vlastnosti bezolovnat\u00FDch feroelektrick\u00FDch oxid\u016F vyu\u017Eiteln\u00FDch p\u0159i v\u00FDrob\u011B pam\u011Bt\u00ED typu FeRAM" . . "Heat capacity; Enthalpy; Mixed oxides; Calorimetry; Ab-initio calculations; Estimations"@en . "http://www.isvav.cz/projectDetail.do?rowId=GA104/07/1209"^^ . . . "Heat capacity" . .