2 research outputs found
Synthesis, structural and magnetic properties of Ca1-xGdxMnO3 nanopowders
Π£ ΠΎΠΊΠ²ΠΈΡΡ ΠΎΠ²Π΅ Π΄ΠΎΠΊΡΠΎΡΡΠΊΠ΅ ΡΠ΅Π·Π΅, ΠΈΡΠΏΠΈΡΠΈΠ²Π°Π½Π΅ ΡΡ ΠΎΠΏΡΠΈΠΌΠ°Π»Π½Π΅ ΠΌΠ΅ΡΠΎΠ΄Π΅ Π·Π° Π΄ΠΎΠ±ΠΈΡΠ°ΡΠ΅Π½Π°Π½ΠΎΠΏΡΠ°Ρ
Π° β ΠΊΠ°Π»ΡΠΈΡΡΠΌ ΠΌΠ°Π½Π³Π°Π½ΡΠΊΠΎΠ³ ΠΎΠΊΡΠΈΠ΄Π° Π΄ΠΎΠΏΠΈΡΠ°Π½ΠΎΠ³ ΡΠΎΠ½ΠΈΠΌΠ° Π³Π°Π΄ΠΎΠ»ΠΈΠ½ΠΈΡΡΠΌΠ°. Π¦ΠΈΡΠΈΡΡΡΠ°ΠΆΠΈΠ²Π°ΡΠ° ΡΠ΅ ΠΈΡΠΏΠΈΡΠΈΠ²Π°ΡΠ΅ ΠΎΠ΄Π³ΠΎΠ²Π°ΡΠ°ΡΡΡΠΈΡ
ΠΏΡΠ΅ΠΊΡΡΡΠΎΡΠ° ΠΊΠΎΡΠΈ ΡΡ ΠΏΠΎΠ΄Π΅ΡΠ½ΠΈ Π΄Π° ΡΠ΅Π΄ΠΎΠ±ΠΈΡΡ ΡΠΈΡΡΠΈ Π½Π°Π½ΠΎ ΠΏΡΠ°Ρ
ΠΎΠ²ΠΈ ΠΌΠ°Π½Π³Π°Π½ΠΈΡΠ° ΡΠ° ΠΏΠ΅ΡΠΎΠ²ΡΠΊΠΈΡΡΠΊΠΎΠΌ ΡΡΡΡΠΊΡΡΡΠΎΠΌ, ΠΊΠ°ΠΎ ΠΈΠΌΠΎΠ½ΠΎΡΠ°Π·Π½ΠΈ ΡΠ²ΡΡΡΠΈ ΡΠ°ΡΡΠ²ΠΎΡΠΈ ΡΠ° ΠΏΠ΅ΡΠΎΠ²ΡΠΊΠΈΡΡΠΊΠΎΠΌ ΡΡΡΡΠΊΡΡΡΠΎΠΌ. ΠΠ°ΠΎ ΠΏΠΎΠ΄Π΅ΡΠ°Π½ ΠΌΠ΅ΡΠΎΠ΄ΠΊΠΎΡΠΈΡΡΠ΅Π½Π° ΡΠ΅ ΠΌΠΎΠ΄ΠΈΡΠΈΠΊΠΎΠ²Π°Π½Π° Π³Π»ΠΈΡΠΈΠ½ Π½ΠΈΡΡΠ°ΡΠ½Π° ΠΌΠ΅ΡΠΎΠ΄Π°, Π° ΠΎΠ΄ ΠΏΡΠ΅ΠΊΡΡΡΠΎΡΠ° Π½ΠΈΡΡΠ°ΡΠΈ ΠΈΠ°ΡΠ΅ΡΠ°ΡΠΈ ΠΎΠ΄Π³ΠΎΠ²Π°ΡΠ°ΡΡΡΠΈΡ
ΠΌΠ΅ΡΠ°Π»Π°. ΠΠΎΠ΄ΠΈΡΠΈΠΊΠ°ΡΠΈΡΠ° Π³Π»ΠΈΡΠΈΠ½ Π½ΠΈΡΡΠ°ΡΠ½Π΅ ΠΌΠ΅ΡΠΎΠ΄Π΅ ΡΠ΅ ΠΎΠ΄Π½ΠΎΡΠΈΠ½Π° Π΄Π΅Π»ΠΈΠΌΠΈΡΠ½Ρ Π·Π°ΠΌΠ΅Π½Ρ Π½ΠΈΡΡΠ°ΡΠ° Π°ΡΠ΅ΡΠ°ΡΠΈΠΌΠ°, ΡΠΈΠΌΠ΅ ΡΠ΅ ΡΠ±Π»Π°ΠΆΠ΅Π½Π° Π±ΡΡΠ½ΠΎΡΡ ΡΠ΅Π°ΠΊΡΠΈΡΠ΅.ΠΡΠΏΠΈΡΠ°Π½ ΡΠ΅ ΡΠ°Π·Π»ΠΈΡΠΈΡΠΈ ΠΎΠ΄Π½ΠΎΡ ΠΏΡΠ΅ΠΊΡΡΡΠΎΡΠ°, ΠΊΠΎΡΠΈ Π΄Π°ΡΡ Π½Π°Π½ΠΎΡΠ΅ΡΡΠΈΡΠ½Π΅ ΠΏΡΠ°Ρ
ΠΎΠ²Π΅ ΠΈ ΠΈΠΌΠ°ΡΡΠΌΠ°Π»ΠΈ Π³ΡΠ±ΠΈΡΠ°ΠΊ ΠΏΡΠΈ ΡΠ΅Π°ΠΊΡΠΈΡΠ°ΠΌΠ°. Π‘ΠΈΠ½ΡΠ΅ΡΠΈΡΠ°Π½ΠΎ ΡΠ΅ ΡΠΊΡΠΏΠ½ΠΎ ΡΠ΅ΡΠΈΡΠΈ Π½Π°Π½ΠΎΠΏΡΠ°Ρ
Π° ΠΏΡΠΈΠΌΠ΅Π½ΠΎΠΌΠΌΠΎΠ΄ΠΈΡΠΈΠΊΠΎΠ²Π°Π½Π΅ Π³Π»ΠΈΡΠΈΠ½ Π½ΠΈΡΡΠ°ΡΠ½Π΅ ΠΌΠ΅ΡΠΎΠ΄Π΅ ΡΠ° ΡΠ»Π΅Π΄Π΅ΡΠΈΠΌ Π½ΠΎΠΌΠΈΠ½Π°Π»Π½ΠΈΠΌ ΡΠ°ΡΡΠ°Π²ΠΎΠΌ:Ca0,95Gd0,05MnO3; Ca0,9Gd0,1MnO3; Ca0,85Gd0,15MnO3; Ca0,8Gd0,2MnO3. ΠΠΎΠ±ΠΈΡΠ΅Π½ΠΈΠΏΡΠ°Ρ
ΠΎΠ²ΠΈ ΡΡ Π΄Π°ΡΠ΅ ΠΊΠ°Π»ΡΠΈΠ½ΠΈΡΠ°Π½ΠΈ Ρ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ½ΠΎΠΌ ΠΈΠ½ΡΠ΅ΡΠ²Π°Π»Ρ ΠΎΠ΄ 850 ΠΎΠ‘ Π΄ΠΎ 950 ΠΎΠ‘ 10min. Π’Π΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ½ΠΈ ΠΎΠΏΡΠ΅Π³ Ρ ΠΊΠΎΠΌΠ΅ ΡΡ ΠΏΠΎΡΠΌΠ°ΡΡΠ°Π½ΠΈ ΠΊΠ°Π»ΡΠΈΠ½ΠΈΡΠ°Π½ΠΈ ΡΠ·ΠΎΡΡΠΈ, Π΄ΠΎΠ±ΠΈΡΠ΅Π½ ΡΠ΅ΠΊΠΎΡΠΈΡΡΠ΅ΡΠ΅ΠΌ Π΄ΠΈΡΠ΅ΡΠ΅Π½ΡΠΈΡΠ°Π»Π½ΠΎ ΡΠ΅ΡΠΌΠΈΡΡΠΊΠ΅ Π°Π½Π°Π»ΠΈΠ·Π΅ (ΠΠ’Π). ΠΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»Π½ΠΎ ΡΡΠΎΠ΄ΡΠ΅ΡΠ΅Π½Π΅ ΠΎΠΏΡΠΈΠΌΠ°Π»Π½Π΅ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ΅ ΡΠΈΠ½ΡΠ΅ΡΠΎΠ²Π°ΡΠ° ΠΈ Π½Π°Π»Π°Π·Π΅ ΡΠ΅ Ρ ΠΎΠΏΡΠ΅Π³Ρ ΠΎΠ΄ 1350 Π΄ΠΎ1450 ΠΎΠ‘.ΠΠ΅ΡΠΎΠ΄ΠΎΠΌ ΡΠ΅Π½Π΄Π³Π΅Π½ΡΠΊΠ΅ Π΄ΠΈΡΡΠ°ΠΊΡΠΈΠΎΠ½Π΅ Π°Π½Π°Π»ΠΈΠ·Π΅ ΠΈ Π ΠΈΡΠ²Π΅Π»Π΄ΠΎΠ²ΠΎΠ³ ΡΡΡΡΠΊΡΡΡΠ½ΠΎΠ³ΡΡΠ°ΡΡΠ°Π²Π°ΡΠ° ΠΈΠ·Π²ΡΡΠ΅Π½Π° ΡΠ΅ ΡΡΡΡΠΊΡΡΡΠ½Π° ΠΈ ΠΌΠΈΠΊΡΠΎΡΡΡΡΠΊΡΡΡΠ½Π° ΠΊΠ°ΡΠ°ΠΊΡΠ΅ΡΠΈΠ·Π°ΡΠΈΡΠ°Π‘Π°1-xGdxMnO3 (Ρ
= 0,05; 0,1; 0,15; 0,2) Π½Π°Π½ΠΎΠΏΡΠ°Ρ
ΠΎΠ²Π°. ΠΠ° ΡΠ°Ρ Π½Π°ΡΠΈΠ½ ΡΠ΅ ΡΡΠ²ΡΡΠ΅Π½ΠΌΠΎΠ½ΠΎΡΠ°Π·Π°Π½ ΡΠ°ΡΡΠ°Π² ΡΠ²ΠΈΡ
ΡΠ·ΠΎΡΠ°ΠΊΠ°, ΠΏΡΠΎΡΡΠΎΡΠ½Π° Π³ΡΡΠΏΠ° Pnma Π°Π»ΠΈ ΠΈ ΡΠΎ, Π΄Π° ΡΡ ΠΎΠ²ΠΈΠΏΠ΅ΡΠΎΠ²ΡΠΊΠΈΡΠΈ ΡΠ³ΡΠ°Π΄ΡΠΎΠΌ Gd3+ Π΄Π΅ΡΠΎΡΠΌΠΈΡΠ°Π½ΠΈ. ΠΠ½Π°Π»ΠΈΠ·ΠΎΠΌ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΠ°ΡΠ° ΡΠ΅Π΄ΠΈΠ½ΠΈΡΠ½Π΅ ΡΠ΅Π»ΠΈΡΠ΅ΡΡΡΠ°Π½ΠΎΠ²ΡΠ΅Π½ΠΎ ΡΠ΅ Π΄Π° ΠΏΠΎΠ²Π΅ΡΠ°ΡΠ΅ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΠ°ΡΠ° ΠΈ ΠΏΡΠΎΠΌΠ΅Π½Π° Ρ ΠΏΡΠΎΡΠ΅ΡΠ½ΠΈΠΌ Π΄ΡΠΆΠΈΠ½Π°ΠΌΠ° MnβΠΠ²Π΅Π·Π° Π½Π°ΡΡΠ°ΡΠ΅ ΡΡΠ»Π΅Π΄ ΠΏΠΎΠ²Π΅ΡΠ°ΡΠ° ΡΠ°Π΄ΡΠΆΠ°ΡΠ° Gd Ρ ΡΡΡΡΠΊΡΡΡΠΈ, ΡΠ΅Π΄ΡΠΊΡΠΈΡΠΈ Mn4+ Π΄ΠΎ Mn3+ ΠΈΠ·Π±ΠΎΠ³ ΠΏΡΠΈΡΡΡΡΠ²ΠΎ Π²Π°ΠΊΠ°Π½ΡΠΈΡΠ°...In this thesis, examined the optimal method for obtaining nano powders -calcium manganese oxide doped with gadolinium ions. The aim of the research is toexamine the appropriate precursors that are suitable to obtain pure nano powders ofperovskite manganite structure, as well as single-phase solid solutions with a perovskitestructure. As a suitable method used is a modified glycine nitrate method, a precursornitrates and acetates of the respective metals. Modification of the procedure wasperformed by partial replacement of nitrates by acetates, in order to control the burn-upreaction. Examined the relationship of various precursors, which give nanosizedpowders have a small loss in reactions. Synthesized four nanopowders using modifiedglycine nitrate procedure with the following nominal composition: Ca0.95Gd0.05MnO3,Ca0.9Gd0.1MnO3, Ca0.85Gd0.15MnO3 and Ca0.8Gd0.2MnO3. The resulting powders werefurther calcined in the temperature range of 850 oC to 950 oC 10 min. The temperaturerange in which they were considered calcined samples, obtained using differentialthermal analysis (DTA). Experimentally determined optimal sintering temperature andthey are in the range of 1350 to 1450 oC.Structural and microstructural characterization of Ca1-xGdxMnO3 (x= 0.05; 0.1;0.15; 0.2) nanopowders were performed by XRPD diffraction tehnique and Rietveldrefinement. Monophase composition of all samples was revealed using XRPDdiffraction and Rietveld refinement, Pnma space group but this, that allperovskitephases are deformed as a result of doping with Gd3+. Unit cell parametersanalysis showed that the increase of unit cell parameters and changes in the averagelength MnβO bonds comes from the increasing content of Gd in the structure, reductionof Mn4+ to Mn3+ and the presence of vacancies..
Synthesis, structural and magnetic properties of Ca1-xGdxMnO3 nanopowders
Π£ ΠΎΠΊΠ²ΠΈΡΡ ΠΎΠ²Π΅ Π΄ΠΎΠΊΡΠΎΡΡΠΊΠ΅ ΡΠ΅Π·Π΅, ΠΈΡΠΏΠΈΡΠΈΠ²Π°Π½Π΅ ΡΡ ΠΎΠΏΡΠΈΠΌΠ°Π»Π½Π΅ ΠΌΠ΅ΡΠΎΠ΄Π΅ Π·Π° Π΄ΠΎΠ±ΠΈΡΠ°ΡΠ΅Π½Π°Π½ΠΎΠΏΡΠ°Ρ
Π° β ΠΊΠ°Π»ΡΠΈΡΡΠΌ ΠΌΠ°Π½Π³Π°Π½ΡΠΊΠΎΠ³ ΠΎΠΊΡΠΈΠ΄Π° Π΄ΠΎΠΏΠΈΡΠ°Π½ΠΎΠ³ ΡΠΎΠ½ΠΈΠΌΠ° Π³Π°Π΄ΠΎΠ»ΠΈΠ½ΠΈΡΡΠΌΠ°. Π¦ΠΈΡΠΈΡΡΡΠ°ΠΆΠΈΠ²Π°ΡΠ° ΡΠ΅ ΠΈΡΠΏΠΈΡΠΈΠ²Π°ΡΠ΅ ΠΎΠ΄Π³ΠΎΠ²Π°ΡΠ°ΡΡΡΠΈΡ
ΠΏΡΠ΅ΠΊΡΡΡΠΎΡΠ° ΠΊΠΎΡΠΈ ΡΡ ΠΏΠΎΠ΄Π΅ΡΠ½ΠΈ Π΄Π° ΡΠ΅Π΄ΠΎΠ±ΠΈΡΡ ΡΠΈΡΡΠΈ Π½Π°Π½ΠΎ ΠΏΡΠ°Ρ
ΠΎΠ²ΠΈ ΠΌΠ°Π½Π³Π°Π½ΠΈΡΠ° ΡΠ° ΠΏΠ΅ΡΠΎΠ²ΡΠΊΠΈΡΡΠΊΠΎΠΌ ΡΡΡΡΠΊΡΡΡΠΎΠΌ, ΠΊΠ°ΠΎ ΠΈΠΌΠΎΠ½ΠΎΡΠ°Π·Π½ΠΈ ΡΠ²ΡΡΡΠΈ ΡΠ°ΡΡΠ²ΠΎΡΠΈ ΡΠ° ΠΏΠ΅ΡΠΎΠ²ΡΠΊΠΈΡΡΠΊΠΎΠΌ ΡΡΡΡΠΊΡΡΡΠΎΠΌ. ΠΠ°ΠΎ ΠΏΠΎΠ΄Π΅ΡΠ°Π½ ΠΌΠ΅ΡΠΎΠ΄ΠΊΠΎΡΠΈΡΡΠ΅Π½Π° ΡΠ΅ ΠΌΠΎΠ΄ΠΈΡΠΈΠΊΠΎΠ²Π°Π½Π° Π³Π»ΠΈΡΠΈΠ½ Π½ΠΈΡΡΠ°ΡΠ½Π° ΠΌΠ΅ΡΠΎΠ΄Π°, Π° ΠΎΠ΄ ΠΏΡΠ΅ΠΊΡΡΡΠΎΡΠ° Π½ΠΈΡΡΠ°ΡΠΈ ΠΈΠ°ΡΠ΅ΡΠ°ΡΠΈ ΠΎΠ΄Π³ΠΎΠ²Π°ΡΠ°ΡΡΡΠΈΡ
ΠΌΠ΅ΡΠ°Π»Π°. ΠΠΎΠ΄ΠΈΡΠΈΠΊΠ°ΡΠΈΡΠ° Π³Π»ΠΈΡΠΈΠ½ Π½ΠΈΡΡΠ°ΡΠ½Π΅ ΠΌΠ΅ΡΠΎΠ΄Π΅ ΡΠ΅ ΠΎΠ΄Π½ΠΎΡΠΈΠ½Π° Π΄Π΅Π»ΠΈΠΌΠΈΡΠ½Ρ Π·Π°ΠΌΠ΅Π½Ρ Π½ΠΈΡΡΠ°ΡΠ° Π°ΡΠ΅ΡΠ°ΡΠΈΠΌΠ°, ΡΠΈΠΌΠ΅ ΡΠ΅ ΡΠ±Π»Π°ΠΆΠ΅Π½Π° Π±ΡΡΠ½ΠΎΡΡ ΡΠ΅Π°ΠΊΡΠΈΡΠ΅.ΠΡΠΏΠΈΡΠ°Π½ ΡΠ΅ ΡΠ°Π·Π»ΠΈΡΠΈΡΠΈ ΠΎΠ΄Π½ΠΎΡ ΠΏΡΠ΅ΠΊΡΡΡΠΎΡΠ°, ΠΊΠΎΡΠΈ Π΄Π°ΡΡ Π½Π°Π½ΠΎΡΠ΅ΡΡΠΈΡΠ½Π΅ ΠΏΡΠ°Ρ
ΠΎΠ²Π΅ ΠΈ ΠΈΠΌΠ°ΡΡΠΌΠ°Π»ΠΈ Π³ΡΠ±ΠΈΡΠ°ΠΊ ΠΏΡΠΈ ΡΠ΅Π°ΠΊΡΠΈΡΠ°ΠΌΠ°. Π‘ΠΈΠ½ΡΠ΅ΡΠΈΡΠ°Π½ΠΎ ΡΠ΅ ΡΠΊΡΠΏΠ½ΠΎ ΡΠ΅ΡΠΈΡΠΈ Π½Π°Π½ΠΎΠΏΡΠ°Ρ
Π° ΠΏΡΠΈΠΌΠ΅Π½ΠΎΠΌΠΌΠΎΠ΄ΠΈΡΠΈΠΊΠΎΠ²Π°Π½Π΅ Π³Π»ΠΈΡΠΈΠ½ Π½ΠΈΡΡΠ°ΡΠ½Π΅ ΠΌΠ΅ΡΠΎΠ΄Π΅ ΡΠ° ΡΠ»Π΅Π΄Π΅ΡΠΈΠΌ Π½ΠΎΠΌΠΈΠ½Π°Π»Π½ΠΈΠΌ ΡΠ°ΡΡΠ°Π²ΠΎΠΌ:Ca0,95Gd0,05MnO3; Ca0,9Gd0,1MnO3; Ca0,85Gd0,15MnO3; Ca0,8Gd0,2MnO3. ΠΠΎΠ±ΠΈΡΠ΅Π½ΠΈΠΏΡΠ°Ρ
ΠΎΠ²ΠΈ ΡΡ Π΄Π°ΡΠ΅ ΠΊΠ°Π»ΡΠΈΠ½ΠΈΡΠ°Π½ΠΈ Ρ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ½ΠΎΠΌ ΠΈΠ½ΡΠ΅ΡΠ²Π°Π»Ρ ΠΎΠ΄ 850 ΠΎΠ‘ Π΄ΠΎ 950 ΠΎΠ‘ 10min. Π’Π΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ½ΠΈ ΠΎΠΏΡΠ΅Π³ Ρ ΠΊΠΎΠΌΠ΅ ΡΡ ΠΏΠΎΡΠΌΠ°ΡΡΠ°Π½ΠΈ ΠΊΠ°Π»ΡΠΈΠ½ΠΈΡΠ°Π½ΠΈ ΡΠ·ΠΎΡΡΠΈ, Π΄ΠΎΠ±ΠΈΡΠ΅Π½ ΡΠ΅ΠΊΠΎΡΠΈΡΡΠ΅ΡΠ΅ΠΌ Π΄ΠΈΡΠ΅ΡΠ΅Π½ΡΠΈΡΠ°Π»Π½ΠΎ ΡΠ΅ΡΠΌΠΈΡΡΠΊΠ΅ Π°Π½Π°Π»ΠΈΠ·Π΅ (ΠΠ’Π). ΠΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ°Π»Π½ΠΎ ΡΡΠΎΠ΄ΡΠ΅ΡΠ΅Π½Π΅ ΠΎΠΏΡΠΈΠΌΠ°Π»Π½Π΅ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ΅ ΡΠΈΠ½ΡΠ΅ΡΠΎΠ²Π°ΡΠ° ΠΈ Π½Π°Π»Π°Π·Π΅ ΡΠ΅ Ρ ΠΎΠΏΡΠ΅Π³Ρ ΠΎΠ΄ 1350 Π΄ΠΎ1450 ΠΎΠ‘.ΠΠ΅ΡΠΎΠ΄ΠΎΠΌ ΡΠ΅Π½Π΄Π³Π΅Π½ΡΠΊΠ΅ Π΄ΠΈΡΡΠ°ΠΊΡΠΈΠΎΠ½Π΅ Π°Π½Π°Π»ΠΈΠ·Π΅ ΠΈ Π ΠΈΡΠ²Π΅Π»Π΄ΠΎΠ²ΠΎΠ³ ΡΡΡΡΠΊΡΡΡΠ½ΠΎΠ³ΡΡΠ°ΡΡΠ°Π²Π°ΡΠ° ΠΈΠ·Π²ΡΡΠ΅Π½Π° ΡΠ΅ ΡΡΡΡΠΊΡΡΡΠ½Π° ΠΈ ΠΌΠΈΠΊΡΠΎΡΡΡΡΠΊΡΡΡΠ½Π° ΠΊΠ°ΡΠ°ΠΊΡΠ΅ΡΠΈΠ·Π°ΡΠΈΡΠ°Π‘Π°1-xGdxMnO3 (Ρ
= 0,05; 0,1; 0,15; 0,2) Π½Π°Π½ΠΎΠΏΡΠ°Ρ
ΠΎΠ²Π°. ΠΠ° ΡΠ°Ρ Π½Π°ΡΠΈΠ½ ΡΠ΅ ΡΡΠ²ΡΡΠ΅Π½ΠΌΠΎΠ½ΠΎΡΠ°Π·Π°Π½ ΡΠ°ΡΡΠ°Π² ΡΠ²ΠΈΡ
ΡΠ·ΠΎΡΠ°ΠΊΠ°, ΠΏΡΠΎΡΡΠΎΡΠ½Π° Π³ΡΡΠΏΠ° Pnma Π°Π»ΠΈ ΠΈ ΡΠΎ, Π΄Π° ΡΡ ΠΎΠ²ΠΈΠΏΠ΅ΡΠΎΠ²ΡΠΊΠΈΡΠΈ ΡΠ³ΡΠ°Π΄ΡΠΎΠΌ Gd3+ Π΄Π΅ΡΠΎΡΠΌΠΈΡΠ°Π½ΠΈ. ΠΠ½Π°Π»ΠΈΠ·ΠΎΠΌ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΠ°ΡΠ° ΡΠ΅Π΄ΠΈΠ½ΠΈΡΠ½Π΅ ΡΠ΅Π»ΠΈΡΠ΅ΡΡΡΠ°Π½ΠΎΠ²ΡΠ΅Π½ΠΎ ΡΠ΅ Π΄Π° ΠΏΠΎΠ²Π΅ΡΠ°ΡΠ΅ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΠ°ΡΠ° ΠΈ ΠΏΡΠΎΠΌΠ΅Π½Π° Ρ ΠΏΡΠΎΡΠ΅ΡΠ½ΠΈΠΌ Π΄ΡΠΆΠΈΠ½Π°ΠΌΠ° MnβΠΠ²Π΅Π·Π° Π½Π°ΡΡΠ°ΡΠ΅ ΡΡΠ»Π΅Π΄ ΠΏΠΎΠ²Π΅ΡΠ°ΡΠ° ΡΠ°Π΄ΡΠΆΠ°ΡΠ° Gd Ρ ΡΡΡΡΠΊΡΡΡΠΈ, ΡΠ΅Π΄ΡΠΊΡΠΈΡΠΈ Mn4+ Π΄ΠΎ Mn3+ ΠΈΠ·Π±ΠΎΠ³ ΠΏΡΠΈΡΡΡΡΠ²ΠΎ Π²Π°ΠΊΠ°Π½ΡΠΈΡΠ°...In this thesis, examined the optimal method for obtaining nano powders -calcium manganese oxide doped with gadolinium ions. The aim of the research is toexamine the appropriate precursors that are suitable to obtain pure nano powders ofperovskite manganite structure, as well as single-phase solid solutions with a perovskitestructure. As a suitable method used is a modified glycine nitrate method, a precursornitrates and acetates of the respective metals. Modification of the procedure wasperformed by partial replacement of nitrates by acetates, in order to control the burn-upreaction. Examined the relationship of various precursors, which give nanosizedpowders have a small loss in reactions. Synthesized four nanopowders using modifiedglycine nitrate procedure with the following nominal composition: Ca0.95Gd0.05MnO3,Ca0.9Gd0.1MnO3, Ca0.85Gd0.15MnO3 and Ca0.8Gd0.2MnO3. The resulting powders werefurther calcined in the temperature range of 850 oC to 950 oC 10 min. The temperaturerange in which they were considered calcined samples, obtained using differentialthermal analysis (DTA). Experimentally determined optimal sintering temperature andthey are in the range of 1350 to 1450 oC.Structural and microstructural characterization of Ca1-xGdxMnO3 (x= 0.05; 0.1;0.15; 0.2) nanopowders were performed by XRPD diffraction tehnique and Rietveldrefinement. Monophase composition of all samples was revealed using XRPDdiffraction and Rietveld refinement, Pnma space group but this, that allperovskitephases are deformed as a result of doping with Gd3+. Unit cell parametersanalysis showed that the increase of unit cell parameters and changes in the averagelength MnβO bonds comes from the increasing content of Gd in the structure, reductionof Mn4+ to Mn3+ and the presence of vacancies..