Resistivity–thermopower correlation derived temperature-dependent transport behaviour of MnxZn1−xFe2O4 nanoparticles

• Main Authors: Jaison Joseph, R.B. Tangsali, S.M. Gurav
• Format: Article
• Language: English
• Published: Taylor & Francis Group 2017-07-01
• Series: Journal of Taibah University for Science
• Subjects: Ferrite nanoparticles; Resistivity; Thermopower; Transport behaviour analysis; Spin-Seebeck effect
• Online Access: http://www.sciencedirect.com/science/article/pii/S1658365516300723

Ferrite material nanoparticles comprised of manganese and zinc were chemically synthesized by the co-precipitation method. The designated ferrite X-ray diffraction peaks and characteristic ferrite absorption bands in Fourier transform infrared absorption spectra confirmed the formation of a spinel structure. Determination of the full width at half maximum values of the X-ray diffraction peaks and the corresponding calculations using the Scherrer formula suggested the generation of nano-grains. Micrographs obtained using a transmission electron microscope confirmed the nano-scale dimensions of the particles. Deviations in the characteristic resistivity and thermopower values in response to ambient sample temperature variations were experimentally observed and used for correlation-derived temperature-dependent transport behaviour analysis. Samples with a concentration x = 0.8 and 1.0 showed high thermopower values at reasonably low temperatures with moderate specific resistance.