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Abstract:
The growing demand for storage space has promoted in-depth research on magnetic performance regulation in an energysaving way. Recently, we developed a solar control of magnetism, allowing the magnetic moment to be manipulated by sunlight instead of the magnetic field, current, or laser. Here, binary and ternary photoactive systems with different photon-to-electron conversions are proposed. The photovoltaic/magnetic heterostructures with a ternary system induce larger magnetic changes due to higher short current density (J(SC)) (20.92 mA.cm(-2)) compared with the binary system (11.94 mA.cm(-2)). During the sunlight illumination, ferromagnetic resonance (FMR) shift increases by 80% (from 169.52 to 305.48 Oe) attributed to enhanced photoinduced electrons doping, and the variation of saturation magnetization (M-S) is also amplified by 14% (from 9.9% to 11.3%). Furthermore, photovoltaic performance analysis and the transient absorption (TA) spectra indicate that the current density plays a major role in visible light manipulating magnetism. These findings clarify the laws of sunlight control of magnetism and lay the foundation for the next generation solar-driven magneto-optical memory applications.
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Source :
NANO RESEARCH
ISSN: 1998-0124
Year: 2021
Issue: 3
Volume: 15
Page: 2626-2633
8 . 8 9 7
JCR@2020
ESI Discipline: PHYSICS;
ESI HC Threshold:26
CAS Journal Grade:2
Cited Count:
WoS CC Cited Count: 1
SCOPUS Cited Count: 5
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 1
Affiliated Colleges: