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Download fileDemonstration of polycrystalline thin film coatings on glass for spin Seebeck energy harvesting
journal contribution
posted on 2016-07-19, 11:28 authored by Andrew J. Caruana, Michael Cropper, Jake Zipfel, Zhaoxia ZhouZhaoxia Zhou, G.D. West, Kelly MorrisonKelly MorrisonThe spin Seebeck effect, a newly discovered phenomena, has been suggested as a potential ‘game changer’ for thermoelectric
technology due to the possibility of separating the electric and thermal conductivities. This is due to a completely different device architecture where, instead of an arrangement of p- and n-type pillars between two ceramic blocks, a thermopile
could be deposited directly onto a magnetic film of interest. Here we report on the spin Seebeck effect in polycrystalline Fe3O4 :Pt bilayers deposited onto amorphous glass substrates with a view for economically viable energy harvesting. Crucially, these films exhibit large coercive fields (197 Oe)
and retain 75% of saturation magnetisation, in conjunction with energy conversion comparable to epitaxially grown films. This demonstrates the potential of this technology for widespread application in harvesting waste heat for electricity.
Funding
This work was supported by EPSRC First Grant (EP/L024918/1).
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