Structural, luminescent and magnetic studies of Mn(HPO4).3H2O
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en
Article de revue
Este ítem está publicado en
Journal de Physique IV Proceedings. 2005, vol. vol. 123, p. p. 241-244
EDP Sciences
Resumen en inglés
The Mn(HPO4).3H2O compound has been synthesized from a mixture of manganese(II) chloride tetrahydrate, phosphoric acid and water at pH=6. The compound was characterized from X-ray powder diffraction data by means of the ...Leer más >
The Mn(HPO4).3H2O compound has been synthesized from a mixture of manganese(II) chloride tetrahydrate, phosphoric acid and water at pH=6. The compound was characterized from X-ray powder diffraction data by means of the Rietveld method. Its crystal structure consists of layers constructed from isolated MnO6 octahedra linked by the PO4 tetrahedra anions giving rise to chains. The thermogravimetric study indicates that the compound is stable up to 100°C. The IR spectrum confirms the presence of hydrogenphosphate anion. The Dq and Racah parameters have been calculated from the luminescent spectra of the Mn(II) cations. The magnetic measurements indicate the presence of mainly antiferromagnetic interactions with a weak ferromagnetism intrinsic to the compound below 7.9 K.< Leer menos
Palabras clave en inglés
Mn(HPO4).3H2O
Phosphates
Luminescence
Chemical structure
Chemical analysis
Magnetism
Orígen
Importado de HalCentros de investigación