EPR Spectroscopy of the Mn^{2+} and Cu^{2+} Centres in Lithium and Potassium-Lithium Tetraborate Glasses

• Authors: B. Padlyak , W. Wojtowicz , V. Adamiv , Ya. Burak , I. Teslyuk
• Languages of publication: EN

Abstracts

EN

The electron paramagnetic resonance spectra of the glasses with Li_{2}B_{4}O_{7} and KLiB_{4}O_{7} compositions doped with Mn and Cu were investigated. On the basis of obtained EPR spectra analysis it was shown that the Mn and Cu impurities are incorporated into the glass network as Mn^{2+} (^{6}S_{5/2}, 3d^{5}) and Cu^{2+} (^{2}D_{5/2}, 3d^{9}) ions. The Mn^{2+} EPR spectra in the glasses with Li_{2}B_{4}O_{7} and KLiB_{4}O_{7} compositions are characterised by the following parameters, measured at T = 300 K: isotropic g-factor (g_{iso} = 2.00 ± 0.05), isotropic hyperfine constant (A_{iso} = (8.65 ± 0.05) mT) and peak-to-peak linewidth of hyperfine components ΔB_{pp} = (3.50 ± 0.05) mT. The Cu^{2+} EPR spectra in the glasses with Li_{2}B_{4}O_{7} and KLiB_{4}O_{7} compositions, registered at T = 300 K are characterised by the same g-values (g_∥ = 2.34 ± 0.05, g_⊥ = 2.06 ± 0.05) and peak-to-peak line width of hyperfine components (ΔB_{pp}^{∥} = (5.11 ± 0.05) mT, ΔB_{pp}^{⊥} = (1.80 ± 0.05) mT), whereas anisotropic hyperfine constants show some differences (A_{∥} = (14.28 ± 0.05) mT, A_{⊥} = (2.34 ± 0.05) mT for glass with Li_{2}B_{4}O_{7} composition and A_{∥} = (14.21 ± 0.05) mT, A_{⊥} = (2.55 ± 0.05) mT for glass with KLiB_{4}O_{7} composition). The possible local structure of the Mn^{2+} and Cu^{2+} centres in the lithium and potassium-lithium tetraborate glass network has been considered.

Keywords

EN

76.30.Fc; 81.05.Kf

Discipline

• 76.30.Fc: Iron group (3d) ions and impurities (Ti-Cu)
• 81.05.Kf: Glasses (including metallic glasses)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2010
• Volume: 117
• Issue: 1
• Pages: 122-125

Dates

published

2010-01

Contributors

author

B. Padlyak

• Institute of Physical Optics, 23 Dragomanov Str., 79-005 Lviv, Ukraine
• Institute of Physics, University of Zielona Góra, 4a Szafrana Str., 65-516 Zielona Góra, Poland

author

W. Wojtowicz

• Institute of Physics, University of Zielona Góra, 4a Szafrana Str., 65-516 Zielona Góra, Poland

author

V. Adamiv

• Institute of Physical Optics, 23 Dragomanov Str., 79-005 Lviv, Ukraine

author

Ya. Burak

• Institute of Physical Optics, 23 Dragomanov Str., 79-005 Lviv, Ukraine

author

I. Teslyuk

• Institute of Physical Optics, 23 Dragomanov Str., 79-005 Lviv, Ukraine

References

• 1. Ya.V. Burak, B.V. Padlyak, V.M. Shevel, Nucl. Instrum. Methods Phys. Res. B 191, 633 (2002)
• 2. Ya.V. Burak, B.V. Padlyak, V.M. Shevel, Radiat. Effects Defects Solids 157, 1101 (2002)
• 3. M. Santiago, M. Lester, E. Caselli, A. Lavat, J. Mater. Sci. Lett. 17, 1293 (1998)
• 4. M. Prokic, Radiat. Prot. Dosim. 100, 265 (2002)
• 5. N. Can, T. Karali, P.D. Townsend, F. Vildiz, J. Phys. D, Appl. Phys. 39, 2038 (2006)
• 6. N. Senguttuvan, M. Ishii, M. Shimoyama, M. Kobayashi, N. Tsutsui, M. Nikl, M. Dusek, H.M. Shimizu, T. Oku, T. Adachi, K. Sakai, J. Suzuki, Nucl. Instrum. Methods Phys. Res. A 486, 264 (2002)
• 7. B.I. Zadneprowski, N.E. Eremin, A.A. Paskhalov, Funct. Mater. 12, 261 (2005)
• 8. B.V. Padlyak, A. Gutsze, Appl. Magn. Reson. 14, 59 (1998)
• 9. B.V. Padlyak, Radiat. Effects Defects Solids 158, 411 (2003)
• 10. M. Ignatovych, V. Holovey, A. Watterich, T. Vidóczy, P. Baranyai, A. Kelemen, V. Ogenko, O. Chuiko, Radiat. Phys. Chem. 67, 587 (2003)
• 11. M. Ignatovych, V. Holovey, T. Vidóczy, P. Baranyai, A. Kelemen, Radiat. Phys. Chem. 76, 1527 (2007)
• 12. M. Ignatovych, V. Holovey, T. Vidóczy, P. Baranyai, A. Kelemen, Radiat. Phys. Chem. 76, 1531 (2007)
• 13. D. Podgórska, S.M. Kaczmarek, W. Drozdowski, M. Wabia, M. Kwaśny, S. Warchol, V.M. Rizak, Mol. Phys. Rep. 39, 199 (2004)
• 14. M. Ignatovych, V. Holovey, T. Vidóczy, P. Baranyai, A. Keleman, V. Laguta, O. Chujko, Funct. Mater. 12, 313 (2005)
• 15. T. Jr. Castner, G.S. Newell, W.C. Holton, C.P. Slichter, J. Chem. Phys. 32, 668 (1960)
• 16. B. Bleaney, K.W.H. Stevens, Rep. Prog. Phys. 16, 108 (1953)
• 17. D.L. Griscom, J. Non-Cryst. Solids 40, 211 (1980)
• 18. C.M. Brodbeck, R.R. Bukrey, Phys. Rev. B 25, 2334 (1981)
• 19. E.M. Yahiaoui, R. Berger, Y. Servant, J. Kliava, L. Chugunov, A. Mednis, J. Phys., Condens. Matter 6, 9415 (1994)
• 20. B. Sreedhar, Ch. Sumalatha, Kazuo Kojima, J. Non-Cryst. Solids 192-193, 203 (1995)
• 21. E. Burzo, I. Ardelean, Phys. Status Solidi B 87, K137 (1978)
• 22. B. Karthikeyan, S. Mohan, Mater. Lett. 57, 3789 (2003)
• 23. A. Witkowska, B. Padlyak, J. Rybicki, Opt. Mater. 30, 699 (2008)
• 24. J. Krogh-Moe, Acta Crystallogr. B 24, 179 (1968)

Identifiers

DOI

10.12693/APhysPolA.117.122