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| Title: | Effects of V and Mn colorants on the crystallization behavior and optical properties of Ce-Doped Li-Disilicate glass–ceramics |
| Author (s): | Rukmani, Sandhya Jayaraman Brow, Richard K. Reis, Signo Tadeu Dos Apel, Elke Rheinberger, Volker Holand, Wolfram |
| Department/Lab Affiliations: | Materials Research Center Materials Science & Engineering University Transportation Center |
| Keywords: | annealed glasses critical cooling rate fluorescence intensities glass melts |
| Subject Terms: | Transition metal oxides. |
| Issue Date: | 2007-03 |
| Publisher: | Wiley/ Blackwell (Formerly Blackwell or Blackwell Synergy) |
| Citation: | Rukmani, Sandhya Jayaraman, Brow, Richard K., Reis, Signo T., Apel, Elke, Rheinberger, Volker, and Holand Wolfram. "Effects of V and Mn Colorants on the Crystallization Behavior and Optical Properties of Ce-Doped Li-Disilicate Glass–Ceramics.", Journal of the American Ceramic Society, vol. 90, no. 3, pp. 706-711, 2007. |
| Abstract: | The critical cooling rate and fluorescence properties of lithium (Li) disilicate glasses and glass–ceramics, doped with 2.0 wt% CeO2 and with up to 0.7 wt% V2O5 and 0.3 wt% MnO2 added as colorants, were investigated. The critical cooling rates, Rc, of glass melts were determined using differential thermal analysis and were found to be dependent on the relative concentrations of V2O5 and MnO2, decreasing from 25±3° to 16±3°C/min. Annealed glasses were heat treated first to 670°C, and then to 850°C to form Li metasilicate and Li disilicate glass–ceramics, respectively. The fluorescence intensities of the Ce-doped glasses and glass–ceramics decrease by a factor of 100 with the addition of the transition metal oxides. This optical quenching effect is explained by the association of the Ce3+ ions with the transition metal ions in the residual glassy phase of the glass–ceramics. |
| Type: | Article - Journal text |
| In Title: | Journal of the American Ceramic Society |
| Copyright Notice: | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. Pre-print: author can archive; Post-print: author can archive FULL COPYRIGHT INFORMATION: |
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| title | Effects of V and Mn colorants on the crystallization behavior and optical properties of Ce-Doped Li-Disilicate glass–ceramics |
| contributor.author | Rukmani, Sandhya Jayaraman |
| contributor.author | Brow, Richard K. |
| contributor.author | Reis, Signo Tadeu Dos |
| contributor.author | Apel, Elke |
| contributor.author | Rheinberger, Volker |
| contributor.author | Holand, Wolfram |
| contributor.deptlab | Materials Research Center |
| contributor.deptlab | Materials Science & Engineering |
| contributor.deptlab | University Transportation Center |
| subject | annealed glasses |
| subject | critical cooling rate |
| subject | fluorescence intensities |
| subject | glass melts |
| subject.LCSH | Transition metal oxides. |
| date.issued | 2007-03 |
| publisher | Wiley/ Blackwell (Formerly Blackwell or Blackwell Synergy) |
| identifier.citation | Rukmani, Sandhya Jayaraman, Brow, Richard K., Reis, Signo T., Apel, Elke, Rheinberger, Volker, and Holand Wolfram. "Effects of V and Mn Colorants on the Crystallization Behavior and Optical Properties of Ce-Doped Li-Disilicate Glass–Ceramics.", Journal of the American Ceramic Society, vol. 90, no. 3, pp. 706-711, 2007. |
| identifier.pub.URI | |
| description.abstract | The critical cooling rate and fluorescence properties of lithium (Li) disilicate glasses and glass–ceramics, doped with 2.0 wt% CeO2 and with up to 0.7 wt% V2O5 and 0.3 wt% MnO2 added as colorants, were investigated. The critical cooling rates, Rc, of glass melts were determined using differential thermal analysis and were found to be dependent on the relative concentrations of V2O5 and MnO2, decreasing from 25±3° to 16±3°C/min. Annealed glasses were heat treated first to 670°C, and then to 850°C to form Li metasilicate and Li disilicate glass–ceramics, respectively. The fluorescence intensities of the Ce-doped glasses and glass–ceramics decrease by a factor of 100 with the addition of the transition metal oxides. This optical quenching effect is explained by the association of the Ce3+ ions with the transition metal ions in the residual glassy phase of the glass–ceramics. |
| type | Article - Journal |
| type.DCMIType | text |
| rights | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. |
| rights | Pre-print: author can archive; Post-print: author can archive |
| rights.URI | |
| rights.URI | |
| relation.isPartOf | Journal of the American Ceramic Society |
| date.available | 2008-08-06T20:27:35Z |
| identifier.persist.URI |