Lilac ceramic pigments based on Ba0.5Sr0.5Zn2−xNixSi2O7 solid solutions

Lilac pigments were prepared within the solid solution series Ba0.5Sr0.5Zn2−xNixSi2O7 with 0.1≤x≤0.5 from the corresponding oxides and carbonates via solid-state reactions. Depending on the composition, the solid solutions exhibit the crystal structure of the low-temperature and the high-temperature...

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Bibliographic Details
Published inCeramics international Vol. 42; no. 11; pp. 13035 - 13040
Main Authors Thieme, Christian, Waurischk, Tina, Lin, Changgui, Rüssel, Christian
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 15.08.2016
Subjects
Absorption spectra
Color space
Coordination
Nickel
Pigments
XRD
Pigments
Nickel
XRD
Absorption spectra
Coordination
Color space
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Summary:Lilac pigments were prepared within the solid solution series Ba0.5Sr0.5Zn2−xNixSi2O7 with 0.1≤x≤0.5 from the corresponding oxides and carbonates via solid-state reactions. Depending on the composition, the solid solutions exhibit the crystal structure of the low-temperature and the high-temperature phases of BaZn2Si2O7. This structural change leads to a change in the optical spectra, i.e. the coloration of the ceramic powders. The different colors are attributed to the variation of the coordination sites of Ni2+. In the case of samples with the structure of HT-BaZn2Si2O7, Ni2+-ions are incorporated into tetrahedrally coordinated sites. Spectra of samples with the crystal structure of LT-BaZn2Si2O7 are attributed to a mixture of Ni2+ in tetrahedral coordination but also to distorted sites with higher coordination numbers.
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2016.05.082