What are the requirements? Integration of STOs into conventional RF circuitry means that the STO has to deliver 0dBm to drive for instance RF blocks such as a mixer. Using magnetic tunnel junction devices we have seen that the output signal can be enhanced to -40 dBm (see section on Spin Valves vs Tunnel Junctions). […]

Increasing Output Power by impedance matching Description Impedance mismatch between the STNO device (for MTJs 100 – 1000 Ohm) and standard RF circuitry (at 50 Ohm) leads to a reduction of the output power of 10 dB. Proper impedance matching is thus important. Partners LETI/DCOS ; LETI/DACLE Financing ANR-05-NANO-44 MagICO (2005-2008) ; OSEO/Anvar (2005-2009) ; Carnot RF (2006-20010) ; […]

Spin torque driven excitation spectra and microwave performances for different STNO configurations Description The dynamic response under spin transfer torque depends on the magnetization configuration of the polarizer and the free layer. At SPINTEC we have focused on two configurations which are (i) a perpendicular polarizer or (ii) a synthetic antiferromagnetic free layer. Partners LETI/DCOS […]

Injection and detection of pure spin currents using ferromagnetic resonance Description Damping enhancement in ferromagnetic resonance to study spin current injection from FM1 and spin absorption in FM2 or NM in magnetic heterostructures FM1/Cu/FM2 or FM1/Cu/NM. Partners Prof. W. E. Bailey, Columbia University, New York, USA F. Wilhelm, A. Rogalev, European Synchrotron Radiation Facility (ESRF), […]

Development of magnetic tunnel junctions (MTJ) of low RA and high TMR Description Optimization of the deposition parameters using the LETI/DCOS IBS sputtering deposition tool from SPTS to realize high quality magnetic tunnel junction oscillators of different device configurations. Partners LETI/DCOS (Marie Claire Cyrille) CEA/SPEC Saclay (Olivier Klein) CNRS/THALES (Vincent Cros, Julien Kermorvant) Financing ANR-09-NANO-037 […]

L.D. Buda-Prejbeanu, H. Szambolics, F. Garcia-Sanchez, I. Firastrau, J.Ch. Toussaint The effect of the spin polarized current on the magnetization dynamics is an extremely hot topic nowadays both from fundamental and applicative point of view. The micromagnetic modeling become in this context an irreplaceable prediction tool for exploring at nm length scale the magnetization distribution […]

SPINTEC CEA 1005 building 17 rue des Martyrs 38054 GRENOBLE Cedex 9 Phone : +33 4 38 78 49 77 Phone : +33 4 38 78 23 83 Fax : +33 4 38 78 21 27 Email : direction.spintec@cea.fr  

Overview Positioned at the crossroad of science and technology, SPINTEC (SPINtronique et TEchnologie des Composants) is one of the leading spintronics research laboratories worldwide. Ideally located on the MINATEC campus in Grenoble, SPINTEC gathers, in a flexible and project-oriented organization, physicists and engineers from the academic and the industrial world. The laboratory was created in […]

Overview Materials development is a fundamental activity at SPINTEC, a determining factor for the success of our research projects. The Materials Growth team assists and participates on the development and characterization of new materials and stacks for the different research projects. Sputtering and molecular beam epitaxy (MBE) are our two main deposition techniques. The team […]