Novel bias-field-free spin transfer oscillator

Journal Article · Wed May 07 00:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4862936· OSTI ID:22273881

Windbacher, Thomas; Makarov, Alexander; Mahmoudi, Hiwa; Sverdlov, Viktor; Selberherr, Siegfried ^[1]

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1. Institute for Microelectronics, TU Wien, Gußhausstraße 27–29/E360, A-1040 Wien (Austria)

Two versions of magnetic field free spin torque oscillators with in- and out-of-plane spin polarizers are proposed. The field free spin torque oscillators comprise two spin valve stacks with a common free magnetic layer featuring an out-of-plane anisotropy. Their operation frequencies are controlled by the dimensions of the free layer and can also be tuned by the applied currents. Large and stable magnetization precessional motion of the whole shared free layer for both oscillators are obtained. The structure with in-plane polarizers allows more efficient microwave power extraction of the large in-plane magnetization precession of the free layer.

• OSTI ID: 22273881
• Journal Information: Journal of Applied Physics, Vol. 115, Issue 17; Conference: 55. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 14-18 Nov 2010; Other Information: (c) 2014 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
ANISOTROPY
ELECTRIC CURRENTS
LAYERS
MAGNETIC FIELDS
MAGNETIZATION
MICROWAVE RADIATION
OSCILLATORS
SPIN
SPIN ORIENTATION
TORQUE
VALVES