Ukrainian Journal of Physical Optics 

Home page
 
 

Other articles 

in this issue
Raman Spectra of Glasses of CaO-Ga2O3-GeO2 System
Padlyak B.

Institute of Physical Optics, 23 Dragomanov St., 79005 Lviv, Ukraine

download full version

Raman spectra of undoped glasses of CaO-Ga2O3-GeO2 system with the garnet (Ca3Ga2Ge3O12) and Ca-gallogermanate (Ca3Ga2Ge4O14) structures are measured and analyzed. The spectra are interpreted on the basis of comparison to the well known Raman spectra of the garnet crystals with Ca3Ga2Ge3O12 and Ca3Sc2Ge3O12 structures. It is shown that the spectra observed for the glasses of CaO-Ga2O3-GeO2 system are almost independent of the basic glass composition. They consist of two broad bands centred near 535 and 825 cm-1, which belong to totally symmetric vibrational modes A1g of the mixed tetrahedral groups (structural units) (Ge/Ga)O4 available in the glass network. The interpretation of our results shows good correlation with the structural data obtained with EXAFS spectroscopy

Keywords: germanate glasses, garnet crystals, Raman spectroscopy, vibrational properties

PACS: 42.70.Ce, 78.30.Ly, 63.50.+x.
UDC: 535.36
Ukr. J. Phys. Opt. 9 51-59 
doi: 10.3116/16091833/9/1/51/2008
Received: 29.12.2007

REFERENCES

1.Padlyak BV, Koepke Cz, Wisniewski K, Grinberg M, Gutsze A and Buchynskii PP, 1998. Spectroscopic Evaluation of the CGG (CaO-Ga2O3-GeO2) Glass Doped with Chromium. J. Lumin.79: 1-8.
        doi:10.1016/S0022-2313(98)00019-2 http://dx.doi.org/10.1016/S0022-2313(98)00019-2
2. Grinberg M, Barzowska J, Shen YR, Bray KL, Padlyak BV, and Buchynskii P. P., 2002. High-pressure luminescence of Cr3+-doped CaO-Ga2O3-GeO2 glasses. Phys. Rev. B. 65: 064203.
        doi:10.1103/PhysRevB.65.064203 http://dx.doi.org/10.1103/PhysRevB.65.064203
3. Padlyak BV, Kuklinski B and B Buchynskii PP, 2003. Optical Spectroscopy of the Ho-Doped Glasses with 3CaO-Ga2O3-3GeO2 Composition. Opt. Appl. XXXIII: 175-181.
4. Padlyak B, Vlokh O, Fabisiak K, Sagoo K and Kuklinski B, 2006. Optical Spectroscopy of the Er-Doped Glasses with 3CaO-Ga2O3-3GeO2 Composition. Opt. Mater. 28: 157-161.
        doi:10.1016/j.optmat.2004.10.038 http://dx.doi.org/10.1016/j.optmat.2004.10.038
5. Padlyak B, Vlokh O, Ryba-Romanowski W and Lisiecki R, 2006. Optical Spectroscopy of Nd3+ Centres in the Glass with 3CaO-Ga2O3-3GeO2 Composition. Ukr. J. Phys. Opt. 7: 149-158.
        doi:10.3116/16091833/7/4/149/2006 http://dx.doi.org/10.3116/16091833/7/4/149/2006
6. Padlyak B, Ryba-Romanowski W and Lisiecki R, 2008. Optical Spectroscopy and Local Structure of the Er3+ Luminescence Centres in the Glasses of CaO-Ga2O3-GeO2 System. J. Non-Cryst. Solids (in press).
7. Padlyak BV, Fabisiak K, Stryganyuk GB. In Abstract Book: 3rd Workshop on Functional Materials (FMA’2006), Athens: University of Athens, 2006, Greece, P. O-7.
8. Padlyak BV and Buchynskii PP, 1998. Glass Transparent in the Infrared Region. Patent of Ukraine, No. UA 25235 A.
9. Smolenskii GA, Sinii IG, Kolpakova NN, Prochorova SD, Mikvabia VD, Syrnikov PP, 1981. Raman and Mandelstam-Brilluien Scattering of Light in Ca3Ga2Ge3O12. Fiz. Tverd. Tela 23: 1726-1734.
10. Nosenko AE, Bily OI, Luk’yaniec VM, 1982. Raman Scattering of Light in Ca3Ga2Ge3O12 Single Crystals. Fiz. Elektron. 24: 135-138.
11. Cavalli E, Zannoni E, Bettinelli M, Speghini A, Tonelli M, Toncelli A, 2000.Vibrational Properties of Ca3Sc2Ge3O12, a Garnet Host Crystal for Laser Applications. J. Phys.: Condens. Matter. 12: 4665-4674.
        doi:10.1088/0953-8984/12/21/310 http://dx.doi.org/10.1088/0953-8984/12/21/310
12. Bily OI, Nosenko AE, Luk’yaniec VM and Litvinenko VI, 1984. Spectroscopic Investigations of Sm3Ga5O12 Single Crystals. Zhurn. Prikladn. Spektros. XLI: 763-767.
13. Bily OI, Nosenko AE and Kravchishin VV, 1984. Investigation of Raman and Luminescence Spectra of Gadolinium-Gallium Garnet Single Crystals. Ukr. Fiz. Zhurn. 29: 362-365.
14. Nosenko AE, Bily OI and Artamonov VV, 1984. Investigations of Raman Spectra of the Nd3Ga5O12 Single Crystals. Zhurn. Prikladn. Spektros. XL: 413-418.
15. Chelstowski D, Witkowska A, Rybicki J, Padlyak B, Trapananti A and Principi E, 2003. EXAFS Study of Glasses of the CaO-Ga2O3-GeO2 System. Opt. Appl. XXXIII: 125-132.
16. Bily OI and Nosenko AE, 1985. Structure and Vibrational Spectra of Ca3Ga2Ge4O14 Single Crystals. Fiz. Elektron. 31: 61-68.
17. Hurrell JP, Porto SPS, Chang IF, Mitra SS and Bauman RP, 1968. Optical Phonons of Yttrium Aluminum Garnet. Phys. Rev. 173: 851-856.
        doi:10.1103/PhysRev.173.851 http://dx.doi.org/10.1103/PhysRev.173.851
18. Koningstein JA and Sonnich Mortensen O, 1968. Laser-Excited Phonon Raman Spectrum of Garnets. J. Mol. Spectrosc. 27: 343-350.
        doi:10.1016/0022-2852(68)90043-X http://dx.doi.org/10.1016/0022-2852(68)90043-X
19. Nakamoto K. Infrared and Raman Spectroscopy of Inorganic and Coordination Compounds. New York: Wiley (1997).

(c) Ukrainian Journal of Physical Optics