Open Access. Powered by Scholars. Published by Universities.®
Electromagnetics and Photonics Commons™
Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 3 of 3
Full-Text Articles in Electromagnetics and Photonics
Flicker Noise In Yba₂Cu₃O₇₋Δ Bicrystal Grain-Boundary Junctions In Weak Magnetic-Fields, Charles Surya, N. E. Israeloff, A. Widom, R. Seed, C. Vittoria
Flicker Noise In Yba₂Cu₃O₇₋Δ Bicrystal Grain-Boundary Junctions In Weak Magnetic-Fields, Charles Surya, N. E. Israeloff, A. Widom, R. Seed, C. Vittoria
Nathan Israeloff
Flicker noise in c-axis oriented long YBCO bicrystal grain boundary junctions was characterized as a function of temperature, biasing conditions, and magnetic field applied perpendicular to the a-b plane over a wide range of temperatures from 15 K to over 70 K. Aperiodic variations, as a function of magnetic field, were observed in both the junction voltages, V-J, and the flicker noise magnitude under constant current bias as the magnetic field was scanned from 0 to 8 G. The noise magnitudes were found to peak at the minima of V-J. Analyses of the field dependencies of the: magnitudes and the …
High-Sensitivity Ferromagnetic Resonance Measurements On Micrometer-Sized Samples, S. Zhang, S. Oliver, N. Israeloff, C. Vittoria
High-Sensitivity Ferromagnetic Resonance Measurements On Micrometer-Sized Samples, S. Zhang, S. Oliver, N. Israeloff, C. Vittoria
Nathan Israeloff
Ferromagnetic resonance measurements were taken on a 4 μm diam disk using a planar microwave transmission line device. The absorption modes of a sample placed on this devise can be measured by monitoring the microwave power transmitted across the device while a swept magnetic field varies the sample absorption through resonance. Results for the disk, which was etched from a 105 nm thick amorphous Fe₈₀B₁₅Si₅ film, followed the Kittel model over the frequency range from 2 to 20 GHz, in agreement with parameters measured on 5 mm diam disks by a microwave cavity. These results indicate the device has a …
Ferromagnetic Resonance Of Micrometer-Sized Samples, S. Zhang, S. A. Oliver, N. E. Israeloff, A. Widom, C. Vittoria
Ferromagnetic Resonance Of Micrometer-Sized Samples, S. Zhang, S. A. Oliver, N. E. Israeloff, A. Widom, C. Vittoria
Nathan Israeloff
Submicrometer-sized slotline and coplanar waveguide devices were used for ferromagnetic resonance (FMR) measurement on submicrometer-sized magnetic fine particles. FMR measurements were taken on individual magnetic disks, having diameters ranging from 50 to 1 μm, using either a slotline-coplanar waveguide (CPW) junction device or a coplanar waveguide transmission line junction device. The magnetic samples were etched from a 105 nm thick amorphous Fe₈₀B₁₅Si₅ film on a quartz substrate. Absorption modes, which were measured with the submicrometer-sized slotline CPW, followed the Kittel magnetic resonance model for frequencies from 1 to 20 GHz for the 1 μm diam disk. By detecting the second …