Synthesis, Microstructure and EPR of CaMnO3 and EuxCa1-xMnO3 Manganite, Obtained by Coprecipitation
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| Format: | Artículo científico |
| Language: | es |
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Sociedad Química de México
2011
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| _version_ | 1876481695414222848 |
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| author | Maribel Santiago-Teodoro |
| author_facet | Maribel Santiago-Teodoro |
| contents | Synthesis, Microstructure and EPR of CaMnO3 and EuxCa1-xMnO3 Manganite, Obtained by Coprecipitation Maribel Santiago-Teodoro Leticia Hernández-Cruz Herlinda Montiel-Sánchez Guillermo Álvarez-Lucio Marco Antonio Flores-González Felipe Legorreta-García Multidisciplinaria (Ciencias Naturales y Exactas) Synthesis manganite microstructure coprecipitation electronic paramagnetic resonance The synthesis of CaMnO3 and EuxCa1-xMnO3 obtained by coprecipitation method is showed. The synthesized samples were characterized by X-ray diffraction (XRD) and scanning electronic microscopy (SEM), the powders showed orthorhombic structure and pnma space group. When it was doped with Europium, their morphology tendency was spherical. Measurements were carried out on electron paramagnetic resonance (EPR) with constant frequency = 9.4 GHz (band X) and dc magnetic field (Hdc) 0-0.8 T, measurements were at 300 K and 77 K. EPR spectra showed significant differences between both samples, indicating that the substitution of divalent alkaline earth cations by trivalent rare earth ions, allowing the formation of a mixed valence state of manganese, Mn3+ and Mn4+. A 77 K, the manganite of concentration x = 0.30 had a magnetic ordering, noted by the presence of hysteresis. 2011 artículo científico 1870-249X https://www.redalyc.org/articulo.oa?id=47521272002 es http://www.redalyc.org/revista.oa?id=475 Journal of the Mexican Chemical Society application/pdf Sociedad Química de México Journal of the Mexican Chemical Society (México) Num.4 Vol.55 |
| format | Artículo científico |
| id | redalyc_47521272002 |
| institution | Redalyc |
| language | es |
| publishDate | 2011 |
| publisher | Sociedad Química de México |
| spellingShingle | Synthesis, Microstructure and EPR of CaMnO3 and EuxCa1-xMnO3 Manganite, Obtained by Coprecipitation Maribel Santiago-Teodoro Multidisciplinaria (Ciencias Naturales y Exactas) Synthesis manganite microstructure coprecipitation electronic paramagnetic resonance Synthesis, Microstructure and EPR of CaMnO3 and EuxCa1-xMnO3 Manganite, Obtained by Coprecipitation Maribel Santiago-Teodoro Leticia Hernández-Cruz Herlinda Montiel-Sánchez Guillermo Álvarez-Lucio Marco Antonio Flores-González Felipe Legorreta-García Multidisciplinaria (Ciencias Naturales y Exactas) Synthesis manganite microstructure coprecipitation electronic paramagnetic resonance The synthesis of CaMnO3 and EuxCa1-xMnO3 obtained by coprecipitation method is showed. The synthesized samples were characterized by X-ray diffraction (XRD) and scanning electronic microscopy (SEM), the powders showed orthorhombic structure and pnma space group. When it was doped with Europium, their morphology tendency was spherical. Measurements were carried out on electron paramagnetic resonance (EPR) with constant frequency = 9.4 GHz (band X) and dc magnetic field (Hdc) 0-0.8 T, measurements were at 300 K and 77 K. EPR spectra showed significant differences between both samples, indicating that the substitution of divalent alkaline earth cations by trivalent rare earth ions, allowing the formation of a mixed valence state of manganese, Mn3+ and Mn4+. A 77 K, the manganite of concentration x = 0.30 had a magnetic ordering, noted by the presence of hysteresis. 2011 artículo científico 1870-249X https://www.redalyc.org/articulo.oa?id=47521272002 es http://www.redalyc.org/revista.oa?id=475 Journal of the Mexican Chemical Society application/pdf Sociedad Química de México Journal of the Mexican Chemical Society (México) Num.4 Vol.55 |
| title | Synthesis, Microstructure and EPR of CaMnO3 and EuxCa1-xMnO3 Manganite, Obtained by Coprecipitation |
| topic | Multidisciplinaria (Ciencias Naturales y Exactas) Synthesis manganite microstructure coprecipitation electronic paramagnetic resonance |
| url | https://www.redalyc.org/articulo.oa?id=47521272002 |