Premium
Flux growth of straw‐like rutile monocrystals
Author(s) -
Bloise A.,
Barrese E.,
Ferraris G.
Publication year - 2008
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.200711069
Subject(s) - rutile , raman spectroscopy , flux (metallurgy) , materials science , amorphous solid , scanning electron microscope , crystal (programming language) , analytical chemistry (journal) , crystallography , diffraction , mineralogy , chemistry , metallurgy , optics , composite material , chromatography , programming language , physics , organic chemistry , computer science
Millimetric straw‐like rutile monocrystals were grown by the flux growth technique. A suitable mixture of flux (MoO 3 , V 2 O 5 , Li 2 CO 3 ) and amorphous TiO 2 gel was slowly cooled down to 750°C from 1250°C or 1350°C. The best yields of straw‐like rutile were obtained with a nutrient/flux ratio and a cooling rate in the range 0.015‐0.006 and 1.8‐1.9 K h ‐1 , respectively. The hollowed crystals were characterized by powder and single‐crystal X‐ray diffraction, scanning electron microscopy, microthermometry, and µ‐Raman spectroscopy. As for skeletal crystal, the formation of axial canals in rutile is attributed to a lack of nutrient due to the viscosity of the melt and the high growth rate along [001]. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)