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- Title
Structural and Electrical Properties of Fluorine Doped (Bi, Pb)-1212 Ceramics.
- Authors
Amirouche, L.; Amira, A.; Saoudel, A.; Boudjadja, Y.; Mahamdioua, N.; Varilci, A.; Altintas, S.; Terzioglu, C.
- Abstract
In the aim to test the effect of fluorine doping on structural and electrical properties of semiconducting Bi(Pb)-1212 phase, bulk samples with nominal composition of BiPbSrYCaCuOF with x=0,0.2,0.4 and 0.6 are prepared in air by solid state reaction method and characterized. Similarly to other Bi-based cuprates, the scanning electron microscopy shows that fluorine doping increases the grain size of the samples. The obtained X-ray diffraction patterns are indexed in P4/mmm space group. A slight increase of cell volume by doping is revealed, a result which is in line with that seen in Y-123 compounds. Even if the resistivity decreases with fluorine content, all compounds exhibit a semiconducting behavior. The conduction mechanism obeys well to the two dimensional variable range hopping (2D-VRH) model from room temperature down to approximately 40 K. The analysis of the fitting results suggests that the improvement of electrical conduction could be due to a delocalization of charge carriers.
- Subjects
FLUORINE; SEMICONDUCTOR research; BISMUTH compounds; ELECTRIC resistance; SCANNING electron microscopy
- Publication
Journal of Superconductivity & Novel Magnetism, 2013, Vol 26, Issue 4, p867
- ISSN
1557-1939
- Publication type
Article
- DOI
10.1007/s10948-012-1911-8