Abstract
A mixture of lanthanum oxide (La2O3), chloride (LaCl3), and bromide (LaBr3) was ground in air by a planetary ball mill to investigate synthesis of lanthanum oxychloride (LaOCl), oxybromide (LaOBr), and their solid solutions, LaOCl1-xBrx (0≤x≤1, Δx=0.25). The synthesizing reactions proceed with an increase in grinding time. Unit cell dimensions, a, c, and lattice volume of the solutions evolve linearly with an increase in x in the LaOCl1-xBrx series. Comparing unit cell dimensions of LaOX synthesized by mechanochemical reaction to those of LaOX synthesized by solid-state reaction at high temperature, there is no difference in the length of c, while a is shortened slightly. This may be attributed to the complex cation layer of (LaO)nn+, with a close relationship to a of the cell dimensions, being affected by the intensive grinding.
Original language | English |
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Pages (from-to) | 469-473 |
Number of pages | 5 |
Journal | Journal of Solid State Chemistry |
Volume | 160 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2001 Jan 1 |
Keywords
- LaOBr
- LaOCl
- Lattice parameter deviation
- Mechanochemical reaction
- PbFCl structure
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Condensed Matter Physics
- Physical and Theoretical Chemistry
- Inorganic Chemistry
- Materials Chemistry