TY - GEN
T1 - Development of the new measurement techinque for spin dynamics of magnetic thin films
AU - Endo, Y.
AU - Mori, O.
AU - Yabukami, S.
AU - Utsumi, R.
AU - Shimada, Y.
PY - 2018/10/24
Y1 - 2018/10/24
N2 - The spin dynamics in magnetic thin films have attracted much attention from both fundamental and application viewpoints. The dynamics are described using the phenomenological Landau-Lifshitz-Gilbert (LLG) equation consisting of both the precession torque of the magnetization and the damping torque. Especially, a Gilbert damping constant (a), which describes the strength of damping torque, is one of the dominant parameter to predict the dynamics. Until now, we reported the correlation between α and the saturation magnetostriction (λs) for Ni-Fe and Ni-Fe-M films[1]-[3] and found different behaviors of a depending on positive or negative values of λs. To investigate this correlation in more detail, these parameters must be estimated simultaneously for each film using a same measurement instrument. Herein, we proposed a new measurement technique, which employs a microstripe line probe to detect ferromagnetic resonance (FMR) spectra for a magnetic thin film either with tensile stress or stress free, which enables simultaneous evaluation of α and λs
AB - The spin dynamics in magnetic thin films have attracted much attention from both fundamental and application viewpoints. The dynamics are described using the phenomenological Landau-Lifshitz-Gilbert (LLG) equation consisting of both the precession torque of the magnetization and the damping torque. Especially, a Gilbert damping constant (a), which describes the strength of damping torque, is one of the dominant parameter to predict the dynamics. Until now, we reported the correlation between α and the saturation magnetostriction (λs) for Ni-Fe and Ni-Fe-M films[1]-[3] and found different behaviors of a depending on positive or negative values of λs. To investigate this correlation in more detail, these parameters must be estimated simultaneously for each film using a same measurement instrument. Herein, we proposed a new measurement technique, which employs a microstripe line probe to detect ferromagnetic resonance (FMR) spectra for a magnetic thin film either with tensile stress or stress free, which enables simultaneous evaluation of α and λs
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U2 - 10.1109/INTMAG.2018.8508502
DO - 10.1109/INTMAG.2018.8508502
M3 - Conference contribution
AN - SCOPUS:85066785412
T3 - 2018 IEEE International Magnetic Conference, INTERMAG 2018
BT - 2018 IEEE International Magnetic Conference, INTERMAG 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2018 IEEE International Magnetic Conference, INTERMAG 2018
Y2 - 23 April 2018 through 27 April 2018
ER -