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Search Publications by: Anthony Kos (Fed)

Displaying 51 - 75 of 80

Cyrogenic pulsed inductive microwave magnetometer

May 15, 2003

Author(s)

Anthony B. Kos, John P. Nibarger, Radek Lopusnik, Thomas J. Silva, Zbigniew J. Celinski

A cryogenic pulsed inductive microwave magnetometer is used to characterize the switching dynamics in thin-film materials at low temperatures and microwave frequencies. The system is contained inside a 20-cm-dia ultrahigh vacuum chamber and cooled by a

Pulsed inductive microwave magnetometer

October 1, 2002

Author(s)

Anthony B. Kos, Thomas J. Silva, Pavel Kabos

We describe the apparatus, software, and measurement procedures for a pulsed inductive microwave magnetometer (PIMM). PIMM can measure the dynamical properties of materials used in recording heads for magnetic storage applications and it can be used as a

Design and performance of an inductive current probe for integration into the trace suspension assembly

January 1, 2002

Author(s)

Anthony B. Kos, Thomas J. Silva, Pavel Kabos, Matthew Pufall, Donald C. DeGroot, L Webb, M Even

A low-cost, inductive current probe designed for integration into a disk drive trace suspension assembly is described. The main consideration for this design was to use the same materials currently found in trace suspension assemblies, and thus reducing

High-Frequency Behavior and Damping of Fe Co N-Based High-Saturation Soft Magnetic Films

January 1, 2002

Author(s)

Thomas J. Silva, S X. Wang, Sun X. N., Anthony B. Kos

Magnetization dynamics measurements at subnanosecond time scale have been performed on Fe Co N high-saturation soft magnetic films with Permalloy nanolayer seeds and having a saturation magnetization of 1.9 MA/m (1900 emu/cm3). The damping parameter a

Vectorial second-harmonic magneto-optic kerr effect measurement

May 1, 2000

Author(s)

Pavel Kabos, Anthony B. Kos, Thomas J. Silva

A significant modification of an existing experimental technique based on the second-harmonic magneto-optical Kerr effect (SH-MOKE) is introduced. With a p-polarized pumping optical wave incident upon a magnetic film, the transverse component of

Nanosecond Magnetization Reversal in High Coercivity Thin Films

January 1, 2000

Author(s)

N D. Rizzo, Thomas J. Silva, Anthony B. Kos

We used a wide-field Kerr microscope to measure magnetization reversal in high coercivity thin film media that were subjected to nanosecond field pulses. Coplanar waveguides were used as a field source. Two different samples of CoCr 10Ta 4 were measured

Relaxation Times for Magnetization Reversal in a High Coercivity Magnetic Thin Film

March 17, 1999

Author(s)

Thomas J. Silva, Anthony B. Kos, N D. Rizzo

We used a magneto-optical Kerr effect microscope to measure 180° magnetization reversal in a high coercivity CoCr10Ta4 thin film subjected to nanosecond field pulses. Exponential magnetization decay occurs for pulse duration tp10 ns, indicating a crossover