Numerical analysis of thermally assisted spin-transfer torque magnetization reversal in synthetic ferrimagnetic free layers

Journal Article · Thu May 07 00:00:00 EDT 2015 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4917005· OSTI ID:22410101

Shen, J.; Shi, M.; Matsuyama, K. ^[1]

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1. ISEE, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395 (Japan)

The spin transfer torque magnetization reversal of synthetic ferrimagnetic free layers under pulsed temperature rise was numerically studied by solving the Landau–Lifshitz–Gilbert equation, taking into account the stochastic random fields, the temperature dependence of magnetic parameters, and the spin torque terms. The anti-parallel magnetization configuration was retained at the elevated temperature, due to interlayer dipole coupling. A significant thermal assistance effect, resulting in a 40% reduction in the switching current, was demonstrated during a nanosecond pulsed temperature rise up to 77% of the Curie temperature.

• OSTI ID: 22410101
• Journal Information: Journal of Applied Physics, Vol. 117, Issue 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COUPLING
CURIE POINT
DIFFERENTIAL EQUATIONS
DIPOLES
FERRIMAGNETIC MATERIALS
FERRIMAGNETISM
MAGNETIZATION
NUMERICAL ANALYSIS
RANDOMNESS
SPIN
STOCHASTIC PROCESSES
TEMPERATURE DEPENDENCE
TORQUE