Loading...
Please wait, while we are loading the content...
Similar Documents
Electrical Transport in Iron Phosphate-Based Glass-(Ceramics): Insights into the Role of $B_{2}O_{3}$ and $HfO_{2}$ from Model-Free Scaling Procedures
| Content Provider | MDPI |
|---|---|
| Author | Mustafa, Yüksek Andrea, Moguš-Milanković Luka, Pavić Bafti, Arijeta Kubuki, Shiro Ertap, Hüseyin Karabulut, Mevlüt |
| Copyright Year | 2022 |
| Description | In this work, we report the effect of the addition of modifiers and network formers on the polaronic transport in iron phosphate glasses (IPG) in two systems of $HfO_{2}–B_{2}O_{3}–Fe_{2}O_{3}–P_{2}O_{5}$, to which up to 8 mol% boron and hafnium are added. The addition of oxides significantly changes the Fe^{2+}$/Fe_{total}$ ratio, thus directly affecting the polaron number density and consequently controlling DC conductivity trends for both series studied by impedance spectroscopy. Moreover, we found that short-range polaron dynamics are also under the influence of structural changes. Therefore, we have studied them in detail using model-free scaling procedures, Summerfield and Sidebottom scaling. An attempt to construct a super-master curve revealed that in addition to change in polaron number density, also the polaron hopping lengths change, and Sidebottom scaling yields a super-master curve. The spatial extent of the localized motion of polarons is correlated with polaron number density and two distinct regions are observed. A strong increase in the spatial extent of the polaron hopping jump could be related either to the structural changes due to the addition of $HfO_{2}$ and $B_{2}O_{3}$ and their effects on the formation of polarons or to an inherent property of polaron transport in IP glasses with low polaron number density. |
| Starting Page | 639 |
| e-ISSN | 20794991 |
| DOI | 10.3390/nano12040639 |
| Journal | Nanomaterials |
| Issue Number | 4 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-02-14 |
| Access Restriction | Open |
| Subject Keyword | Nanomaterials Information and Library Science Iron Phosphate Glass Small Polaron Hopping Impedance Spectroscopy Scaling Procedures Model-free Conductivity and Permittivity Spectra |
| Content Type | Text |
| Resource Type | Article |
