Crystalloquasichemical Model of Spinel CoFe2O4 Formation, Obtained by Chemical co-Precipitation Method
| Autor: | I. P. Yaremiy, N.D. Paliychuk, T.R. Tatarchuk |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Materials science
Spinel Mineralogy chemistry.chemical_element Crystal structure engineering.material Condensed Matter Physics lcsh:QC1-999 Crystal chemistry.chemical_compound chemistry Impurity Ferrite (iron) engineering Physical chemistry Hydroxide General Materials Science Physical and Theoretical Chemistry Cobalt lcsh:Physics Stoichiometry |
| Zdroj: | Фізика і хімія твердого тіла, Vol 16, Iss 3, Pp 540-546 (2016) |
| ISSN: | 2309-8589 1729-4428 |
| Popis: | In the work the spinel cobalt ferrite synthesized by chemical co-precipitation method. The X-ray diffraction analysis and thermal analysis confirmed the crystalline structure and phase purity of the prepared ferrite. The crystalloquasichemical mechanism of formation stoichiometric cobalt ferrite through interaction by defective hydrooxide phases was described. The surface phenomena that occur on the boundary phase distribution was described. There formation of cationic and anionic vacancies, rooted cobalt atoms or oxygen atoms. Crystalloquasichemical modeling of surface interactions between Co(OH)2 and Fe(OH)3 can trace the formation of spinel structure with the participation of antistructure of matrix and reduced to the corresponding stoichiometric hydroxides species. Shows the reaction of four types of crystal impurity clusters on the surface of the hydroxide matrix and their interaction with each other to form spinel СоFe2O4. Keywords: cobalt ferrite, spinel, defect, vacancy, crystalloquasichemistry. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|