Nanocrystallization in Fluorochlorozirconate Glass-Ceramics.
Heat treating fluorochlorozirconate (FCZ) glasses nucleates nanocrystals in the glass matrix, resulting in a nanocomposite glass-ceramic that has optical properties suitable for use as a medical imaging plate. Understanding the way in which the nanocrystal nucleation proceeds is critical to controlling the optical behavior. The nucleation and growth of nanocrystals in FCZ glass-ceramics was investigated within situtransmission electron microscopy heating experiments. The experiments showed the nucleation and growth of previously unreported BaF2nanocrystals in addition to the expected BaCl2nanocrystals. Chemical analysis of the BaF2nanocrystals shows an association with the optically active dopant previously thought only to interact with BaCl2nanocrystals. The association of the dopant with BaF2crystals suggests that it plays a role in the photoluminescent (PL) properties of FCZ glass-ceramics.
Materials Science and Engineering Department, Northwestern University, Evanston, Illinois 60208 ; Nanoscience and Technology Division, Argonne National Laboratory, Argonne, Illinois 60439.
Carlos J
CJ
Alvarez
Nanoscience and Technology Division, Argonne National Laboratory, Argonne, Illinois 60439.
Yuzi
Y
Liu
Mechanical, Aerospace and Biomedical Engineering Department, University of Tennessee Space Institute, Tullahoma, Tennessee 37388.
Russell L
RL
Leonard
Mechanical, Aerospace and Biomedical Engineering Department, University of Tennessee Space Institute, Tullahoma, Tennessee 37388.
Jacqueline A
JA
Johnson
Materials Science and Engineering Department, Northwestern University, Evanston, Illinois 60208 ; Nanoscience and Technology Division, Argonne National Laboratory, Argonne, Illinois 60439.
Amanda K
AK
Petford-Long