| Yazarlar |
Luka Pavić
Türkiye |
|
Stjepko Fazinic
Türkiye |
Doç. Dr. Hüseyin ERTAP
Kafkas Üniversitesi, Türkiye |
|
Mevlüt Karabulut
Gebze Teknik Üniversitesi, Türkiye |
|
Andrea Moguš-Milanković
Türkiye |
|
Ana Šantić
Türkiye |
| Özet |
| We report on the electrical properties of glasses with nominal composition xB2O3-(100 - x)[40Fe2O3-60P2O5], x = 2-20, mol.%. The conduction transport in these glasses is polaronic and shows a strong dependence on Fe2O3 content and polaron number density. The changes in DC conductivity are found not to be directly related to B2O3, however structural changes induced by its addition impact frequency-dependent conductivity. All glasses obey Summerfield and Sidebottom procedures of scaling conductivity spectra indicating that the polaronic mechanism does not change with temperature. An attempt to produce a super-master curve revealed that shape of the conductivity dispersion is the same for glasses with up to 15.0 mol.% B2O3 but differs for glass with the highest B2O3 content. This result could be related to the presence of borate units in the glass network. Moreover, the spatial extent of localized polaron motions increases with the decrease of polaron number density, however, this increase shows a larger slope than for previously reported iron phosphate glasses most probably due to the influence of B2O3 on glass structure and formation of polarons. While Summerfield scaling procedure fails, Sidebottom scaling yields a super-master curve, which indicates that polaronic hopping lengths also change with changing polaron number density in these glasses. |
| Anahtar Kelimeler |
| iron phosphate glass,polaronic conductivity,glass-former oxide,structure-property relationship,impedance spectroscopy |
| Makale Türü | Özgün Makale |
| Makale Alt Türü | SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale |
| Dergi Adı | Materials |
| Dergi ISSN | 1996-1944 |
| Dergi Tarandığı Indeksler | SCI-Expanded |
| Makale Dili | İngilizce |
| Basım Tarihi | 06-2020 |
| Cilt No | 13 |
| Sayı | 11 |
| Sayfalar | 2505 / |
| Makale Linki | https://www.mdpi.com/1996-1944/13/11/2505 |
