TY - JOUR
T1 - Bolometric ferromagnetic resonance techniques for characterising spin-Hall effect at high temperatures
AU - Phu, P.
AU - Yamanoi, K.
AU - Ohnishi, K.
AU - Hyodo, J.
AU - Rogdakis, K.
AU - Yamazaki, Y.
AU - Kimura, T.
AU - Kurebayashi, H.
N1 - Funding Information:
We acknowledge Dr. Tatsuya Nomura for his supports to this study by sample fabrication. This work is supported by JSPS Program for Fostering Globally Talented Researchers. Y.Y. and H.K. acknowledge the financial support from a Kyushu University research programme “PROGRESS100”.
Publisher Copyright:
© 2019
PY - 2019/9/1
Y1 - 2019/9/1
N2 - We report on current-induced ferromagnetic resonance techniques to characterise spin-Hall effect at high temperatures. A microwave current was injected into a patterned CoFeB/Pt bi-layer grown on a glass substrate, simultaneously exerting spin-transfer torques through the spin-Hall effect and also causing Joule heating enabling the control of the device temperature. We measured the device temperature by using the device itself as a local temperature sensor. A clear reduction of CoFeB magnetisation was observed as the device temperature was increased allowing us to estimate the Curie temperature of our CoFeB film to be 920 K. The spin-Hall angle of Pt was quantified as (1.72 ± 0.03) × 10−2 at 300 K and was slightly increased to (1.75 ± 0.02) × 10−2 at 410 K. This simple method can be widely used for quantifying the spin-Hall angle of a large variety of materials at high temperatures.
AB - We report on current-induced ferromagnetic resonance techniques to characterise spin-Hall effect at high temperatures. A microwave current was injected into a patterned CoFeB/Pt bi-layer grown on a glass substrate, simultaneously exerting spin-transfer torques through the spin-Hall effect and also causing Joule heating enabling the control of the device temperature. We measured the device temperature by using the device itself as a local temperature sensor. A clear reduction of CoFeB magnetisation was observed as the device temperature was increased allowing us to estimate the Curie temperature of our CoFeB film to be 920 K. The spin-Hall angle of Pt was quantified as (1.72 ± 0.03) × 10−2 at 300 K and was slightly increased to (1.75 ± 0.02) × 10−2 at 410 K. This simple method can be widely used for quantifying the spin-Hall angle of a large variety of materials at high temperatures.
KW - High-temperature-measurement
KW - Magnetisation dynamics
KW - Spin-Hall-angle
KW - Spin-transfer-torque
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U2 - 10.1016/j.jmmm.2019.04.070
DO - 10.1016/j.jmmm.2019.04.070
M3 - Article
AN - SCOPUS:85065476311
SN - 0304-8853
VL - 485
SP - 304
EP - 307
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
ER -