OH- impurities in co-doped LiNbO3:Cr3+:ZnO congruent crystals
Ir optical absorption has been used to study OH-impurities into congruent co-doped LiNbO3:Cr3+:ZnO crystals doped with different Zn2+ concentration. The OH- IR absorption spectra present three bands that can be associated with different OH- complex centres available in the lattice. For crystals with...
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| Veröffentlicht in: | The Journal of physics and chemistry of solids 2002-04, Vol.63 (4), p.555-559 |
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| creator | TORCHIA, G. A TOCHO, J. O JAQUE, F |
| description | Ir optical absorption has been used to study OH-impurities into congruent co-doped LiNbO3:Cr3+:ZnO crystals doped with different Zn2+ concentration. The OH- IR absorption spectra present three bands that can be associated with different OH- complex centres available in the lattice. For crystals with lower Zn2+ concentrations ( < 4.7%) only one IR absorption band centred at 2867 nm (3490 cm-1) is reported which is associated with the OH- unperturbed vibration. For crystals with higher Zn2+ concentrations ( > 4.7%), two new bands associated with OH-vibration in distortion environment are reported. These bands are centred at 2827 nm (3537 cm-1) and 2847 nm (3512 cm-1) and can be associated with OH- -Zn2+ and Cr3+(Li+)-OH- -Zn2+(Int.) complex centres, resp. EPR has been used to identify the Cr3+ centres in the lattice of the doped LiNbO3:ZnO crystals. 19 refs. |
| doi_str_mv | 10.1016/S0022-3697(01)00193-7 |
| format | Article |
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A ; TOCHO, J. O ; JAQUE, F</creator><creatorcontrib>TORCHIA, G. A ; TOCHO, J. O ; JAQUE, F</creatorcontrib><description>Ir optical absorption has been used to study OH-impurities into congruent co-doped LiNbO3:Cr3+:ZnO crystals doped with different Zn2+ concentration. The OH- IR absorption spectra present three bands that can be associated with different OH- complex centres available in the lattice. For crystals with lower Zn2+ concentrations ( < 4.7%) only one IR absorption band centred at 2867 nm (3490 cm-1) is reported which is associated with the OH- unperturbed vibration. For crystals with higher Zn2+ concentrations ( > 4.7%), two new bands associated with OH-vibration in distortion environment are reported. These bands are centred at 2827 nm (3537 cm-1) and 2847 nm (3512 cm-1) and can be associated with OH- -Zn2+ and Cr3+(Li+)-OH- -Zn2+(Int.) complex centres, resp. EPR has been used to identify the Cr3+ centres in the lattice of the doped LiNbO3:ZnO crystals. 19 refs.</description><identifier>ISSN: 0022-3697</identifier><identifier>EISSN: 1879-2553</identifier><identifier>DOI: 10.1016/S0022-3697(01)00193-7</identifier><language>eng</language><publisher>Oxford: Elsevier</publisher><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties ; Exact sciences and technology ; Infrared and Raman spectra ; Infrared and raman spectra and scattering ; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation ; Physics</subject><ispartof>The Journal of physics and chemistry of solids, 2002-04, Vol.63 (4), p.555-559</ispartof><rights>2002 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=13473522$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>TORCHIA, G. A</creatorcontrib><creatorcontrib>TOCHO, J. O</creatorcontrib><creatorcontrib>JAQUE, F</creatorcontrib><title>OH- impurities in co-doped LiNbO3:Cr3+:ZnO congruent crystals</title><title>The Journal of physics and chemistry of solids</title><description>Ir optical absorption has been used to study OH-impurities into congruent co-doped LiNbO3:Cr3+:ZnO crystals doped with different Zn2+ concentration. The OH- IR absorption spectra present three bands that can be associated with different OH- complex centres available in the lattice. For crystals with lower Zn2+ concentrations ( < 4.7%) only one IR absorption band centred at 2867 nm (3490 cm-1) is reported which is associated with the OH- unperturbed vibration. For crystals with higher Zn2+ concentrations ( > 4.7%), two new bands associated with OH-vibration in distortion environment are reported. These bands are centred at 2827 nm (3537 cm-1) and 2847 nm (3512 cm-1) and can be associated with OH- -Zn2+ and Cr3+(Li+)-OH- -Zn2+(Int.) complex centres, resp. 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For crystals with higher Zn2+ concentrations ( > 4.7%), two new bands associated with OH-vibration in distortion environment are reported. These bands are centred at 2827 nm (3537 cm-1) and 2847 nm (3512 cm-1) and can be associated with OH- -Zn2+ and Cr3+(Li+)-OH- -Zn2+(Int.) complex centres, resp. EPR has been used to identify the Cr3+ centres in the lattice of the doped LiNbO3:ZnO crystals. 19 refs.</abstract><cop>Oxford</cop><pub>Elsevier</pub><doi>10.1016/S0022-3697(01)00193-7</doi><tpages>5</tpages></addata></record> |
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| subjects | Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Infrared and Raman spectra Infrared and raman spectra and scattering Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation Physics |
| title | OH- impurities in co-doped LiNbO3:Cr3+:ZnO congruent crystals |
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