Spin current generation from sputtered Y₃Fe₅O₁₂ films

Journal Article · Tue Oct 21 00:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4898161· OSTI ID:22305829

Shiomi, Y.; Kikkawa, T.; Iguchi, R. ^[1]; Qiu, Z. ^[2]; Uchida, K. ^[1]; Saitoh, E. ^[1]

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1. Institute for Materials Research, Tohoku University, Sendai 980-8577 (Japan)
2. WPI Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577 (Japan)

Spin current injection from sputtered yttrium iron garnet (YIG) films into an adjacent platinum layer has been investigated by means of the spin pumping and the spin Seebeck effects. Films with a thickness of 83 and 96 nanometers were fabricated by on-axis magnetron rf sputtering at room temperature and subsequent post-annealing. From the frequency dependence of the ferromagnetic resonance linewidth, the damping constant has been estimated to be (7.0 ± 1.0) × 10⁻⁴. Magnitudes of the spin current generated by the spin pumping and the spin Seebeck effect are of the same order as values for YIG films prepared by liquid phase epitaxy. The efficient spin current injection can be ascribed to a good YIG|Pt interface, which is confirmed by the large spin-mixing conductance (2.0 ± 0.2) × 10¹⁸m⁻².

• OSTI ID: 22305829
• Journal Information: Journal of Applied Physics, Vol. 116, Issue 15; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Publisher: American Institute of Physics (AIP)
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANNEALING
CURRENTS
FERRITE GARNETS
FERROMAGNETIC RESONANCE
FILMS
FREQUENCY DEPENDENCE
INJECTION
INTERFACES
IRON OXIDES
LAYERS
LIQUID PHASE EPITAXY
MAGNETRONS
PLATINUM
SEEBECK EFFECT
SPIN
SPUTTERING
TEMPERATURE RANGE 0273-0400 K
THICKNESS
YTTRIUM COMPOUNDS