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Electrical and spectroscopic properties of Fe2O3 doped Na2SO4–BaO–P2O5 glass system


Raghava Rao, P.; Pavić, Luka; Moguš-Milanković, Andrea; Ravi Kumar, V.; Kityk, I.V.; Veeraiah, N.
Electrical and spectroscopic properties of Fe2O3 doped Na2SO4–BaO–P2O5 glass system // Journal of non-crystalline solids, 358 (2012), 23; 3255-3267 doi:10.1016/j.jnoncrysol.2012.08.032 (međunarodna recenzija, članak, znanstveni)


Naslov
Electrical and spectroscopic properties of Fe2O3 doped Na2SO4–BaO–P2O5 glass system

Autori
Raghava Rao, P. ; Pavić, Luka ; Moguš-Milanković, Andrea ; Ravi Kumar, V. ; Kityk, I.V. ; Veeraiah, N.

Izvornik
Journal of non-crystalline solids (0022-3093) 358 (2012), 23; 3255-3267

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Na2SO4–BaO–P2O5 glasses ; dielectric dispersion ; spectroscopic properties

Sažetak
Na2SO4–BaO–P2O5 glasses doped with different concentrations of Fe2O3 were prepared. The valence states of iron ions and their coordination in the glass network have been investigated using optical absorption, ESR, IR and Raman spectroscopy. Electrical and dielectric spectral features have been studied over a wide frequency range (10−2–106 Hz) and within the temperature range from 303 to 523 K. The ac and dc conductivities have exhibited maximal effect, whereas the activation energy for the conductivity demonstrated minimum at 1.5 mol% of Fe2O3. The ac conductivity in the low temperature region is explained based on quantum mechanical tunneling (QMT) model. The analysis of the dc conductivity indicated that at T>θD/2, the small polaron hopping model is appropriate. The dispersion of real part of dielectric constant ε′ (ω), and loss, tan δ, with temperature have been analyzed quantitatively on the basis of space charge and orientation polarization models.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Kemija



POVEZANOST RADA


Projekt / tema
098-0982929-2916 - Utjecaj strukture na električna svojstva (bioaktivnih) stakala i keramike (Andrea Moguš-Milanković, )

Ustanove
Institut "Ruđer Bošković", Zagreb

Profili:

Avatar Url Ivan Kumar (autor)

Avatar Url Andrea Moguš-Milanković (autor)

Avatar Url Luka Pavić (autor)

Citiraj ovu publikaciju

Raghava Rao, P.; Pavić, Luka; Moguš-Milanković, Andrea; Ravi Kumar, V.; Kityk, I.V.; Veeraiah, N.
Electrical and spectroscopic properties of Fe2O3 doped Na2SO4–BaO–P2O5 glass system // Journal of non-crystalline solids, 358 (2012), 23; 3255-3267 doi:10.1016/j.jnoncrysol.2012.08.032 (međunarodna recenzija, članak, znanstveni)
Raghava Rao, P., Pavić, L., Moguš-Milanković, A., Ravi Kumar, V., Kityk, I. & Veeraiah, N. (2012) Electrical and spectroscopic properties of Fe2O3 doped Na2SO4–BaO–P2O5 glass system. Journal of non-crystalline solids, 358 (23), 3255-3267 doi:10.1016/j.jnoncrysol.2012.08.032.
@article{article, year = {2012}, pages = {3255-3267}, DOI = {10.1016/j.jnoncrysol.2012.08.032}, keywords = {Na2SO4–BaO–P2O5 glasses, dielectric dispersion, spectroscopic properties}, journal = {Journal of non-crystalline solids}, doi = {10.1016/j.jnoncrysol.2012.08.032}, volume = {358}, number = {23}, issn = {0022-3093}, title = {Electrical and spectroscopic properties of Fe2O3 doped Na2SO4–BaO–P2O5 glass system}, keyword = {Na2SO4–BaO–P2O5 glasses, dielectric dispersion, spectroscopic properties} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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