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2004
Manganese
I 6800
50- 021
Micrometric Single Crystal Germanates Obtained Using a Double-Spherical
Mirror Furnace. — Micro-crystals of the new compounds LnMnGe2O7 (Ln: Eu, Sm)
are synthesized from stoichiometric mixtures of MnO2, GeO2, and LnCl3 by the flux
method in a double-spherical mirror furnace (700—800 °C, 12—24 h). The samples
are characterized by EDS. The Eu containing compound crystallizes in the orthorhombic space group A222 and the Sm containing compound in the orthorhombic system
with point group 222. The used furnace is perfectly suitable to grow at low price, low
temperature, and short time new materials as single crystals for basic research or to obtain raw materials. — (JUAREZ-ARELLANO*, E. A.; ROSALES, I.;
GAMBOA-ESPINOSA, G. V.; LARA, J. A.; BUCIO, L.; OROZCO, E.; Cryst. Res.
Technol. 39 (2004) 10, 833-839; Inst. Fis., Univ. Nac. Auton. Mexico, 01000 Mexico,
Mex.; Eng.) — W. Pewestorf
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