"Byl studov\u00E1n p\u0159echod z vysokoteplotn\u00ED pseudokubick\u00E9 modifikace perovskit\u016F Bi1-xSrxMnO3, x = 0.3; 0.5; 0.8 do jejich n\u00EDzkoteplotn\u00ED ortorombicky distortovan\u00E9 formy. Jako experiment\u00E1ln\u00ED metoda bylo pou\u017Eito m\u011B\u0159en\u00ED tepeln\u00E9 kapacity pomoc\u00ED DSC na 300 K a s vyu\u017Eit\u00EDm relaxa\u010Dn\u00ED metody pod 300 K. Zat\u00EDmco pro x = 0.5 byl pozorov\u00E1n 500 K \u0161irok\u00FD symetrick\u00FD p\u0159echod s maximem p\u0159i TCO~500K, ob\u011B krajn\u00ED slo\u017Een\u00ED vykazuj\u00ED typick\u00E9 lambda p\u0159echody charakteristick\u00E9 pro p\u0159echody druh\u00E9ho druhu. Celkov\u00E1 entropie uvoln\u011Bn\u00E1 p\u0159i oh\u0159evu je interpretov\u00E1na jako d\u016Fsledek simult\u00E1nn\u00ED zm\u011Bny n\u00E1bojov\u00FDch, orbit\u00E1ln\u00EDch a spinov\u00FDch stup\u0148\u016F volnosti." . "2"^^ . . "Perovskit Bi1-xSrxMnO3 - entalpie a entropie p\u0159echodu do n\u00E1bojov\u00E9ho uspo\u0159\u00E1d\u00E1n\u00ED" . "4"^^ . "80-7194-859-4" . "Bi1-xSrxMnO3 perovskite - enthalpy and entropy of charge order transition"@en . . . "Univerzita Pardubice" . . "Perovskit Bi1-xSrxMnO3 - entalpie a entropie p\u0159echodu do n\u00E1bojov\u00E9ho uspo\u0159\u00E1d\u00E1n\u00ED"@cs . . . "Pardubice" . . "2"^^ . "The transition from the high-temperature pseudocubic form of the perovskite manganites Bi1-xSrxMnO3, x = 0.3; 0.5; 0.8, to their orthorhombically distorted charge-ordered state is examined. As the experimental probe the measuring of the heat capacity by heat flux DSC incremental method above 300K and by relaxation method below 300K is used. While a broad symmetrical transition spanning the temperature interval DT~500K with a maximum at the apparent TCO~500K is observed for x = 0.5, the other two compositions reveal typical lambda-shaped peaks often considered as typical for the second order transitions. The total entropy release on heating is interpreted in terms of a simultaneous change of charge, orbital and spin degree of freedom."@en . "Pardubice" . "RIV/60461373:22310/06:00017011!RIV07-MSM-22310___" . . "Bismuth manganites; orbital ordering; charge ordering; heat capacity"@en . "22310" . "Strejc, Ale\u0161" . . "25-28" . "[62E416794674]" . . . . . . "Perovskit Bi1-xSrxMnO3 - entalpie a entropie p\u0159echodu do n\u00E1bojov\u00E9ho uspo\u0159\u00E1d\u00E1n\u00ED" . . . . "2006-05-22+02:00"^^ . "RIV/60461373:22310/06:00017011" . . "491810" . "Byl studov\u00E1n p\u0159echod z vysokoteplotn\u00ED pseudokubick\u00E9 modifikace perovskit\u016F Bi1-xSrxMnO3, x = 0.3; 0.5; 0.8 do jejich n\u00EDzkoteplotn\u00ED ortorombicky distortovan\u00E9 formy. Jako experiment\u00E1ln\u00ED metoda bylo pou\u017Eito m\u011B\u0159en\u00ED tepeln\u00E9 kapacity pomoc\u00ED DSC na 300 K a s vyu\u017Eit\u00EDm relaxa\u010Dn\u00ED metody pod 300 K. Zat\u00EDmco pro x = 0.5 byl pozorov\u00E1n 500 K \u0161irok\u00FD symetrick\u00FD p\u0159echod s maximem p\u0159i TCO~500K, ob\u011B krajn\u00ED slo\u017Een\u00ED vykazuj\u00ED typick\u00E9 lambda p\u0159echody charakteristick\u00E9 pro p\u0159echody druh\u00E9ho druhu. Celkov\u00E1 entropie uvoln\u011Bn\u00E1 p\u0159i oh\u0159evu je interpretov\u00E1na jako d\u016Fsledek simult\u00E1nn\u00ED zm\u011Bny n\u00E1bojov\u00FDch, orbit\u00E1ln\u00EDch a spinov\u00FDch stup\u0148\u016F volnosti."@cs . "Bi1-xSrxMnO3 perovskite - enthalpy and entropy of charge order transition"@en . "Sedmidubsk\u00FD, David" . "Perovskit Bi1-xSrxMnO3 - entalpie a entropie p\u0159echodu do n\u00E1bojov\u00E9ho uspo\u0159\u00E1d\u00E1n\u00ED"@cs . . "P(GA203/03/0924), Z(MSM6046137302)" . "Sborn\u00EDk z 28. Mezin\u00E1rodn\u00EDho slovensk\u00E9ho a \u010Desk\u00E9ho kalorimetrick\u00E9ho semin\u00E1\u0159e 2006" . .