58525 20170503143437.0 doi 10.1364/OE.20.010701 sideral 77363 ART-2012-77363 eng Sola, D. Site-selective laser spectroscopy of Nd 3+ ions in 0.8CaSiO 3-0.2Ca 3(PO 4) 2 biocompatible eutectic glass-ceramics 2012 Access copy available to the general public Unrestricted In this work we report the influence of the crystallization stage of the host matrix on the spectroscopic properties of Nd3+ ions in biocompatible glass-ceramic eutectic rods of composition 0.8CaSiO3-0.2Ca3(PO4)2 doped with 1 and 2 wt% of Nd2O3. The samples were obtained by the laser floating zone technique at different growth rates between 50 and 500 mm/h. The microstructural analysis shows that a growth rate increase or a rod diameter decrease leads the system to a structural arrangement from three (two crystalline and one amorphous) to two phases (one crystalline and one amorphous). Electron backscattering diffraction analysis shows the presence of Ca2SiO4 and apatite-like crystalline phases. Site-selective laser spectroscopy in the 4I9/2¿4F3/2/4F5/2 transitions confirms that Nd3+ ions are incorporated in crystalline and amorphous phases in these glass-ceramic samples. In particular, the presence of Ca2SiO4 crystalline phase in the samples grown at low rates, which has an excellent in vitro bioactivity, can be unambiguously identified from the excitation spectra and lifetime measurements of the 4F3/2 state of Nd3+ ions. info:eu-repo/grantAgreement/ES/MINECO/CSD2007-00013 info:eu-repo/grantAgreement/ES/MINECO/FIS2011-27968 info:eu-repo/grantAgreement/ES/MINECO/MAT2009-13979-C03-03 info:eu-repo/grantAgreement/ES/MINECO/MAT2009-14282-C02-02 info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 3.546 2012 OPTICS 4 / 79 = 0.051 2012 Q1 T1 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Balda, R. (orcid)0000-0003-2242-6822 Peña, J.I. Universidad de Zaragoza Fernández, J. 5001 065 Universidad de Zaragoza Departamento de Ciencia y Tecnología de Materiales y Fluidos Ciencia de los Materiales e Ingeniería Metalúrgica 20, 10 (2012), 10701-10711 Opt. express OPTICS EXPRESS 1094-4087 409291 http://zaguan.unizar.es/record/58525/files/texto_completo.pdf Versión publicada 80771 http://zaguan.unizar.es/record/58525/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:58525 articulos driver 2017-05-03-14:31:43 ARTICLE