In1.06Ho0.94Ge2O7: a Thortveitite-type Compound

JUAREZ-ARELLANO, ERICK A.; ROSALES, IVONNE; OLIVER, ALICIA; RUVALCABA, JOSE LUIS; CARBONIO, RAUL E.; BUCIO, LAURO; OROZCO, ELIGIO

Blackwell Munksgaard

Lugar: Oxford, Inglaterra; Año: 2004 vol. 60 p. 14 - 14

new indium holmium digermanate, In1.06Ho0.94Ge2O7, with a thortveitite-type structure, has been prepared as a polycrystalline powder material by high-temperature solid-state reaction. This new compound crystallizes in the monoclinic system (space group C2/c, No. 15). The structure was characterized by Rietveld refinement of powder laboratory X-ray diffraction data. The In3+ and Ho3+ cations occupy the same octahedral site, forming a hexagonal arrangement on the ab plane. In their turn, the hexagonal arrangements of (In/Ho)O6 octahedral layers are held together by sheets of isolated diortho groups comprised of double tetrahedra sharing a common v