Synthesis and structural, spectroscopic and magnetic studies of two new polymorphs of Mn(SeO3)·H2O

Autor: Teófilo Rojo, José L. Pizarro, José L. Mesa, María I. Arriortua, A. Peña, Aitor Larrañaga, R. Olazcuaga

Publikováno v: Journal of Solid State Chemistry
Journal of Solid State Chemistry, Elsevier, 2005, vo. 178, n° 12, p. 3686-3697. ⟨10.1016/j.jssc.2005.09.034⟩

Two new manganese(II) selenite polymorphs with formula Mn(SeO3)·H2O have been synthesized by slow evaporation from an aqueous solution. The crystal structure of both compounds (1) and (2) have been solved from X-ray diffraction data. The structure o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e467caea1edd2b76c6436a21baa8d0e6
https://doi.org/10.1016/j.jssc.2005.09.034

The structure and luminescent properties of Mn0.5Zr2(PO4)3

Autor: R. Olazcuaga, G. Le Flem, R. Brochu, A. Mouline, C. Parent, M. Alami

Publikováno v: Materials Research Bulletin. 35:899-908

The phosphate Mn0.5Zr2(PO4)3 can be obtained at high temperature (1400°C). It crystallizes in the rhombohedral system (space group R3) with parameters ah = 8.85(1) and ch = 21.80(5) A in the equivalent hexagonal cell. Its structure, determined by th

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https://doi.org/10.1016/s0025-5408(00)00277-4

A New Nasicon-Type Phosphate Co0.5Ti2(PO4)3: I. Elaboration, Optical and Magnetic Properties

Autor: Pierre Porcher, A.El Bouari, G. Le Flem, L. Beaury, R. Olazcuaga, J. M. Dance, J. Derouet, A. El Jazouli

Publikováno v: Journal of Solid State Chemistry. 143:224-229

A new cobalt titanium monophosphate has been prepared by low temperature method. It crystallizes with the Nasicon-type structure. The indexation of the X-ray diffraction pattern is consistent with theR 3 or theR32 space groups. The atomic arrangement

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https://doi.org/10.1006/jssc.1998.8097

Preparation and structural study of NaEuTi(PO) phosphates

Autor: H. Fakrane, G. Le Flem, A. El Jazouli, M. Lamire, R. Olazcuaga

Publikováno v: Annales de Chimie Science des Mat�riaux. 23:77-80

Summary The phosphates Na (1−3x) Eu x Ti 2 (PO 4 ) 3 (0 ≤x ≤ 0.25) have been obtained by solid state reaction at 950 °C. They crystallize in the Nasicon-type structure. The progressive substitution of europium for sodium results in an increase

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https://doi.org/10.1016/s0151-9107(98)80027-5

Crystallochemistry and structural study of some nasicon-like phosphates

Autor: H. Fakrane, M. Lamire, A. Housni, R. Olazcuaga, A.El Bouari, G. Le Flem, I. Mansouri, A. El Jazouli

Publikováno v: Journal of Alloys and Compounds. :49-53

The phosphates Na1–3xEuxTi2(PO4)3, M0.5Ti2(PO4)3 and M0.5FeNb(PO4)3 (M is a divalent cation) belong to the Nasicon structural family. The structures have been determined by the Rietveld refinement of the powder X-ray diffraction patterns. The space

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https://doi.org/10.1016/s0925-8388(97)00466-0