TY - GEN
T1 - Mechanical, electrical and optical control of magnetization reversals and spin dynamics in extrinsic multiferroics
AU - Liparo, Matthieu
AU - Jay, Jean Philippe
AU - Dubreuil, Matthieu
AU - Fessant, Alain
AU - Jahjah, Walaa
AU - Grand, Yann Le
AU - Sheppard, Charles
AU - Prinsloo, Aletta R.E.
AU - Warot-Fonrose, Bénédicte
AU - Simon, Gaëlle
AU - Vlaminck, Vincent
AU - Castel, Vincent
AU - Temdie-Kom, Loic
AU - Bourcin, Guillaume
AU - Spenato, David
AU - Dekadjevi, David T.
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - Galfenol thin films have attracted a large amount of interest in the last two decades. Indeed, it is of interest to understand the fundamental mechanisms driving the strain and magnetic coupling in thin films. This study focuses on thin Fe0.81Ga0.19 (FeGa) films of thickness 5, 10, 20, and 60 nm deposited by sputtering onto glass substrates, PMN-PZT substrates and Aluminium foils. FeGa magnetostrictive properties were characterized using optical deflectometry. This first study reveals a remarkable thickness dependence, with an effective magnetoelastic coefficient decrease with an a thickness increase. A 10 nm Fe-Ga thin film was grown on Al kitchen foil and then mechanically strained under an isotropic configuration using spherical optical lenses. The FeGa MR properties under such a mechanical strain were determined. The results indicate the development of a random anisotropy character due to the bending. Under an electric field, a large converse magneto-electric effect for the Fe-Ga/PMN-PZT layered structure is observed. This effect is shown to be angular dependent. Finally, light control of static and dynamic magnetic properties in the Blue region is demonstrated. It is achieved with a CW laser or a LED.
AB - Galfenol thin films have attracted a large amount of interest in the last two decades. Indeed, it is of interest to understand the fundamental mechanisms driving the strain and magnetic coupling in thin films. This study focuses on thin Fe0.81Ga0.19 (FeGa) films of thickness 5, 10, 20, and 60 nm deposited by sputtering onto glass substrates, PMN-PZT substrates and Aluminium foils. FeGa magnetostrictive properties were characterized using optical deflectometry. This first study reveals a remarkable thickness dependence, with an effective magnetoelastic coefficient decrease with an a thickness increase. A 10 nm Fe-Ga thin film was grown on Al kitchen foil and then mechanically strained under an isotropic configuration using spherical optical lenses. The FeGa MR properties under such a mechanical strain were determined. The results indicate the development of a random anisotropy character due to the bending. Under an electric field, a large converse magneto-electric effect for the Fe-Ga/PMN-PZT layered structure is observed. This effect is shown to be angular dependent. Finally, light control of static and dynamic magnetic properties in the Blue region is demonstrated. It is achieved with a CW laser or a LED.
KW - FeGa magnetostriction
KW - magnetization reversals and spin dynamics
KW - multiferroics
KW - photostriction
UR - http://www.scopus.com/inward/record.url?scp=85172735034&partnerID=8YFLogxK
U2 - 10.1109/INTERMAGShortPapers58606.2023.10228374
DO - 10.1109/INTERMAGShortPapers58606.2023.10228374
M3 - Conference contribution
AN - SCOPUS:85172735034
T3 - 2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023 - Proceedings
BT - 2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023
Y2 - 15 May 2023 through 19 May 2023
ER -