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Nd:CaWO4 - Wet Etching

Material Name: Nd:CaWO4
Recipe No.: 10300
Primary Chemical Element in Material: Nd, Ca
Sample Type: Single crystal
Uses: Etching
Etchant Name: None
Etching Method: Wet etching
Etchant (Electrolyte) Composition: CaWO4 doped with 0.8 % at. Nd (Nd:CaWO4) single crystals were grown from themelt in air by theCzochralski technique. The critical diameter dc = 1.0 cm and the critical rate of rotation = 30 rpm were calculated from hydrodynamic equations for buoyancy- driven and forced convection. The rate of crystal growth was experimentally obtained to be 6.7 mm/h. For chemical polishing, a solution of 1 part saturated chromic acid (CrO3 in water) and 3 parts conc. H3PO4 (85%) at 433 K with an exposure time of 2 h was found to be adequate. Amixture of 1 part concentrated HFand 2 parts chromic acid at room temperature after exposure for 30 min was found to be a suitable etching solution.
Procedure (Condition): No data
Note: No data
Reference: ALEKSANDAR GOLUBOVIC, et al., The growth of Nd:CaWO4 single crystals, J.Serb.Chem.Soc. 68(12) 1001–1009 (2003).