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Search Publications by: Stephen E. Russek (Fed)

Displaying 226 - 250 of 338

Time and Frequency Domain Measurements of Ferromagnetic Resonance in Small Spin-Valve

September 1, 2000

Author(s)

Stephen E. Russek, Shehzaad F. Kaka

Time and frequency domain magnetoresistance measurements of ferromagnetic resonance (FMR) in small spin-valvedevices are presented along with comparisons to single-domain simulations. The measurements and simulations give consistent results for rotational

High-Speed Dynamics, Damping, and Relaxation Times in Submicrometer Spin-Valve Devices

May 1, 2000

Author(s)

Stephen E. Russek, Shehzaad F. Kaka, Michael J. Donahue

The dynamical response of spin-vale devices with linewidths of 0.8 5m has been measured after excitation with 160 ps magnetic impulses. The devices show resonant frequencies of 2-4 GHz which determine the upper limit of their operation frequency. The

Switching in Spin-Valve Devices in Response to Subnanosecond Longitudinal Field Pulses

May 1, 2000

Author(s)

Shehzaad F. Kaka, Stephen E. Russek

We have fabricated spin-valve devices in a high-speed test structure that allows subnanosecond pulsed field excitation and high-bandwidth observation of the magnetoresistance response. The switching response varies for low-amplitude field pulses and

Switching Characteristics of Spin Valve Devices Designed for MRAM Applications

July 1, 1999

Author(s)

Stephen E. Russek, J O. Oti, Y K. Kim

Observation of the Effects of Tip Magnetization States on Magnetic Force Microscopy Images

April 15, 1999

Author(s)

Paul Rice, Stephen E. Russek

We have investigated the effect of the orientation between the tip and the tip-magnetizing field on the subsequent magnetic force microscopy images.

Study of NiFe/Al/Al 2 O 3 Magnetic Tunnel Junction Interfaces Using Second-Harmonic Magneto-Opto Kerr Effect

April 15, 1999

Author(s)

Stephen E. Russek, T. M. Crawford, Thomas J. Silva

Using the second-harmonic magneto-optic Kerr effect (SHMOKE), we have measured the interfacial magnetic properties of NiFe/Al/Al 2O 3 heterostructures as a function of Al 2O 3 thickness and processing conditions.

High-Speed Characterization of Submicrometer Giant Magnetoresistive Devices

April 1, 1999

Author(s)

Stephen E. Russek, J O. Oti, Shehzaad F. Kaka, E Y. Chen

Study of NiFe/Al/Al 2 O 3 Magnetic Tunnel Junction Interfaces Using Second-Harmonic Magneto-Optic Kerr Effect

April 1, 1999

Author(s)

Stephen E. Russek, T. M. Crawford, Thomas J. Silva

Observation of a fluctuation-enhanced magnetoresistance in Ni 81 Fe 19 /Ag multilayers at high current density

October 1, 1997

Author(s)

Charles T. Rogers, L S. Kirschenbaum, P D. Beale, Stephen E. Russek, S. Sanders

We report a correlation between peaks observed in the resistance versus applied magnetic field and low frequency resistance noise for Ni 81Fe 19/Ag giant magnetoresistance systems with dc bias current density above 10 6 A/cm 2. The magnetic noise has a 1/f

Observation of a Fluctuation-Enhanced Magnetoresistance in Ni81Fe19 /Ag Multilayers at High Current Density

October 1, 1997

Author(s)

Charles T. Rogers, L S. Kirschenbaum, P D. Beale, Stephen E. Russek, S. Sanders

We report a correlation between peaks observed in the resistance versus applied magnetic field and low frequency resistance noise for Ni81Fe19/Ag giant magnetoresistance systems with dc bias current density above 106 A/cm2. The magnetic noise has a 1/f

Observation of a fluctuation-enhanced magnetoresistance in Ni81Fe19 /Ag multilayers at high current density

October 1, 1997

Author(s)

Stephen E. Russek, C. T. Rogers, L S. Kirschenbaum, P D. Beale, Steven C. Sanders

We report a correlation between peaks observed in the resistance versus applied magnetic field and low frequency resistance noise for Ni81Fe19/Ag giant magnetoresistance systems with dc bias current density above 10^6 A/cm^2. The magnetic noise has a 1/f

Field Angle and Current Density Effects in Submicrometer Spin Valves for Digital Applications

September 1, 1997

Author(s)

Stephen E. Russek, J O. Oti, Y K. Kim, R W. Cross

High Current Density Measurements of Giant Magnetoresistive Spin-Valves for Magnetic Recording and Sensor Applications

September 1, 1997

Author(s)

Stephen E. Russek, Anthony B. Kos, Young K. Kim, R. W. Cross