Electrical conductivity, thermopower and57Fe Mössbauer spectroscopy of an Fe-rich amphibole, arfvedsonite
✍ Scribed by E. Schmidbauer, Th. Kunzmann, Th. Fehr, R. Hochleitner
- Book ID
- 118771578
- Publisher
- Springer-Verlag
- Year
- 1996
- Tongue
- English
- Weight
- 838 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0342-1791
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The electrical charge transport was investigated on sintered semiconducting FeNbO 4 and compositions with a slight surplus of Nb in the monoclinic (pseudorhombic) wolframite and orthorhombic -PbO 2 structures using electrical DC, AC resistivity (complex plane impedance analysis), and thermopower in
Iron and/or aluminum are doped to -rhombohedral boron, and the electrical conductivity and 57 Fe Mo¨ssbauer effect are measured. The temperature dependence of the electrical conductivity is explained as a variable range hopping type. The conductivity increases with an increase in Fe concentration, b