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Comparison of Spin Seebeck Signal in Y3Fe5O12 Film Measured by Joule Heating- and Laser Heating-based Measurement Systems
Journal of Magnetics, Volume 27, Number 1, 31 Mar 2022, Pages 1-6
Abstract
In this study, spin Seebeck effect (SSE) signals caused by a thermal gradient induced by Joule and laser heating
were examined. A Pt/Y3Fe5O12/Gd3Ga5O12 sample was used as the reference for SSE measurement. Both
the Joule heating- and laser heating-based SSE measurement systems captured SSE hysteresis loops consistent
with the magnetic hysteresis loop of the sample. The laser heating-based system measured a higher SSE signal;
however, h eat flux could not b e precisely evaluated. With the Joule heating-based system, the spin Seebeck
resistivity (SSR) was 21.2 ± 1 nm/A, comparable with the values obtained in other studies and indicating the
feasibility of our apparatus for investigating SSE.
were examined. A Pt/Y3Fe5O12/Gd3Ga5O12 sample was used as the reference for SSE measurement. Both
the Joule heating- and laser heating-based SSE measurement systems captured SSE hysteresis loops consistent
with the magnetic hysteresis loop of the sample. The laser heating-based system measured a higher SSE signal;
however, h eat flux could not b e precisely evaluated. With the Joule heating-based system, the spin Seebeck
resistivity (SSR) was 21.2 ± 1 nm/A, comparable with the values obtained in other studies and indicating the
feasibility of our apparatus for investigating SSE.
Keywords: Spin Seebeck effect; spin Seebeck resistivity; Joule heating; laser heating; Y3Fe5O12
DOI: https://doi.org/10.4283/JMAG.2022.27.1.001
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