A well-crystalline BaWO4 film has been prepared on a tungsten substrate in an alkaline solution containing barium ions through a simple chemical reaction method at room temperature via the reaction between Ba2+ and WO42 -. The acceleration of the oxidation/dissolution of the tungsten substrate to form WO42 - with an oxidizing agent, H2O2, seems to be the key to the success. Prismatic crystals of a typical grain size of about 8 μm were grown to the thickness of about 10-20 μm after the 2-3 hour treatment. The effect of solution pH, concentration of Ba2+ ions and H2O2 on the formation of BaWO4 crystals were studied in detail with reaction mechanism.
|Number of pages||5|
|Journal||Solid State Sciences|
|Publication status||Published - 2006 Sep 1|
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics