ISSN:
1573-4803
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract Thermoelectric power studies of polycrystalline materials of Sn/Nb substituted Mn-Zn ferrites have been carried out. The Seebeck coefficient, carrier concentration and drift mobility were evaluated. The Seebeck coefficient increases up to 420 K and 400 K for Nb and Sn substituted ferrites respectively. All the ferrites exhibited n-type conduction over the range of temperature studied. At high temperatures, a non-degenerate type of semiconductor behaviour has been observed. The conduction of these materials is explained by hopping of electrons from Fe2+ to Fe3+, in addition to the existence of narrow bands and localized levels. The variation of drift mobility is explained by wavy bands [1, 2].
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1004571418384
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