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In this paper, we present an experimental study on magneto-thermal effect in magnetic multilayers. A novel measurement technique has been developed and employed to obtain accurate measurements of magneto-thermal conductance and correlations with magnetoresistance in Co/Cu magnetic multilayers. The measurement technique involves a suspending patterned magnetic film strip using lithography technique to create an ideal one-dimension heat flow. 3ω method has been employed along with additional developed techniques to obtain accurate magneto-thermal conductivity measurements. It is found that the magneto-thermal conductance correlates well with the magneto-electric conductance under the application of magnetic field, however, with significant greater percentage change.
Date of Publication: Nov. 2012