Conversion of Rare-Earth Doped Borate Glass to Rare-Earth Phosphate Solid Solution Compounds
Department
Materials Science and Engineering
Major
Ceramic Engineering
Research Advisor
Brow, Richard K.
Advisor's Department
Materials Science and Engineering
Funding Source
National Science Foundation Grants DMR-0305202 and DMR-1207520
Abstract
This study observed and characterized a new method of forming Rare-Earth phosphate (REPO4) compounds using the dissolution of a doped borate glass in a potassium phosphate solution to precipitate X-ray amorphous REPO4·2H2O on what was the surface of the glass. This was then heat treated at 700°C to dehydrate and crystallize into REPO4. X-ray diffraction and Raman spectroscopy showed the method's ability to form solid solutions in binary REPO4 systems. Scanning Electron Microscopy showed the formation of hollow spheres of REP04 when using glass microspheres in the dissolution-precipitation process, indicating the ability to control final form through the form of the initial glass. Finally, the fluorescence properties of the (Eu, La)PO4 system was measured, indicating an optimal Eul(Eu+La) of 0.05.
Biography
Colin is a Senior in Ceramic Engineering and has been working with Dr. Brow's research group for 2 years. He is a member of Keramos, Alpha Sigma Mu, Tau Beta Pi, and Tau Beta Sigma. He is graduating in May and plans to pursue a PhD in Material Science, focusing on Glass Science.
Research Category
Sciences
Presentation Type
Oral Presentation
Document Type
Presentation
Award
Sciences poster session, First place
Location
Upper Atrium/Hallway
Presentation Date
03 Apr 2013, 9:00 am - 11:45 am
Conversion of Rare-Earth Doped Borate Glass to Rare-Earth Phosphate Solid Solution Compounds
Upper Atrium/Hallway
This study observed and characterized a new method of forming Rare-Earth phosphate (REPO4) compounds using the dissolution of a doped borate glass in a potassium phosphate solution to precipitate X-ray amorphous REPO4·2H2O on what was the surface of the glass. This was then heat treated at 700°C to dehydrate and crystallize into REPO4. X-ray diffraction and Raman spectroscopy showed the method's ability to form solid solutions in binary REPO4 systems. Scanning Electron Microscopy showed the formation of hollow spheres of REP04 when using glass microspheres in the dissolution-precipitation process, indicating the ability to control final form through the form of the initial glass. Finally, the fluorescence properties of the (Eu, La)PO4 system was measured, indicating an optimal Eul(Eu+La) of 0.05.
