Search Results - "COFFEY, K. R"

Strong Coupling between Nanoscale Metamaterials and Phonons by Shelton, D.J, Brener, I, Ginn, J. C, Sinclair, M. B, Peters, D. W, Coffey, K. R, Boreman, G. D

“…We use split ring resonators (SRRs) at optical frequencies to study strong coupling between planar metamaterials and phonon vibrations in nanometer-scale…”
Get full text

Interdiffusion and reaction between uranium and iron by Huang, K., Park, Y., Ewh, A., Sencer, B.H., Kennedy, J.R., Coffey, K.R., Sohn, Y.H.

“…Metallic uranium alloy fuels cladded in stainless steel are being examined for fast reactors that operate at high temperature. In this work, solid-to-solid…”
Get full text

Comparison of the agglomeration behavior of thin metallic films on SiO2 by Gadkari, P. R., Warren, A. P., Todi, R. M., Petrova, R. V., Coffey, K. R.

Get full text

Grain growth and the puzzle of its stagnation in thin films: The curious tale of a tail and an ear by BARMAK, K, EGGELING, E, KINDERLEHRER, D, SHARP, R, TA'ASAN, S, ROLLETT, A. D, COFFEY, K. R

Get full text

Giant Magnetoresistance at Low Fields in Discontinuous NiFe-Ag Multilayer Thin Films by Hylton, T. L., Coffey, K. R., Parker, M. A., Howard, J. K.

“…A series of sputtered multilayers of Ni$_{80}$Fe$_{20}$-Ag was prepared to examine the giant magnetoresistance effect before and after annealing. For a wide…”
Get full text

Characterization of Pt-Ru binary alloy thin films for work function tuning by Todi, R.M., Warren, A.P., Sundaram, K.B., Barmak, K., Coffey, K.R.

“…This letter describes materials and electrical characterization of Pt-Ru binary alloy metal gate electrodes for control of the electrode work function. The…”
Get full text

Experimental demonstration of tunable phase in a thermochromic infrared-reflectarray metamaterial by Shelton, D J, Coffey, K R, Boreman, G D

“…For the first time, a tunable reflected phase reflectarray is demonstrated in the thermal infrared. This is done using thermochromic VO(2) square-patch…”
Get full text

Effects of Cr and Ni on interdiffusion and reaction between U and Fe–Cr–Ni alloys by Huang, K., Park, Y., Zhou, L., Coffey, K.R., Sohn, Y.H., Sencer, B.H., Kennedy, J.R.

“…Metallic U-alloy fuel cladded in steel has been examined for high temperature fast reactor technology wherein the fuel cladding chemical interaction is a…”
Get full text

Effect of thin silicon dioxide layers on resonant frequency in infrared metamaterials by Shelton, D J, Peters, D W, Sinclair, M B, Brener, I, Warne, L K, Basilio, L I, Coffey, K R, Boreman, G D

“…Infrared metamaterials fabricated on semiconductor substrates exhibit a high degree of sensitivity to very thin (as small as 2 nm) layers of low permittivity…”
Get full text

Grain growth and void formation in dielectric-encapsulated Cu thin films by Yao, B., Sun, T., Kumar, V., Barmak, K., Coffey, K.R.

“…Grain growth in 40-nm-thick Cu films encapsulated by over- and under-layers of SiO2, Al2O3, Si3N4, and MgO was investigated. The films were magnetron sputter…”
Get full text

Microstructural evolution of NiFe/Ag multilayers studied by X-ray diffraction and in situ high-resolution TEM by Snoeck, E., Sinclair, R., Parker, M.A., Hylton, T.L., Coffey, K.R., Howard, J.K., Lessmann, A., Bienenstock, A.I.

“…X-ray diffraction and in situ high-resolution electron microscopy experiments have been performed to study the effect of annealing on the microstructure of…”
Get full text

Experimental evidence for nucleation during thin-film reactions by COFFEY, K. R, CLEVENGER, L. A, BARMAK, K, RUDMAN, D. A, THOMPSON, C. V

“…The reaction between solid layers to form a product phase has been studied using scanning calorimetry of multilayer Nb/Al and Ni/amorphous-Si thin films. The…”
Get full text

Magnetostatically induced giant magnetoresistance in patterned NiFe/Ag multilayer thin films by Hylton, T. L., Parker, M. A., Coffey, K. R., Howard, J. K., Fontana, R., Tsang, C.

“…Thin film multilayer structures consisting of two permalloy layers separated by Ag spacers show little or no giant magnetoresistance in their as-deposited…”
Get full text

Granular giant magnetoresistance at low fields in bilayer thin films by COFFEY, K. R, HYLTON, T. L, PARKER, M. A, HOWARD, J. K

“…Granular giant magnetoresistance is observed at saturation fields of 350–1100 Oe in thin-film structures consisting of a discontinuous layer of Co or NiFe…”
Get full text

Overview of progress in giant magnetoresistive sensors based on NiFe/Ag multilayers by Parker, M.A., Coffey, K.R., Howard, J.K., Tsang, C.H., Fontana, R.E., Hylton, T.L.

“…The evolution of devices based on NiFe and Ag in thin film giant magnetoresistance (GMR) structures is reviewed and traced from the early continuous multilayer…”
Get full text

Stress relaxation and stability of sputtered carbon thin films by RAMAN, V, COFFEY, K. R

“…Stress measurements were performed on sputtered carbon films deposited on Si substrates in the temperature range from room temperature to 350 °C. Both…”
Get full text

X-ray diffraction and magnetic properties of rapid thermal annealed sendust films by Ullah, M.I., Coffey, K.R., Parker, M.A., Howard, J.K.

“…A rapid thermal annealing (RTA) process for sputter deposited sendust (FeSiAl) films is described and the effects of different annealing conditions on key soft…”
Get full text

Grain growth in ultrathin films of CoPt and FePt by Ristau, R. A., Barmak, K., Coffey, K. R., Howard, J. K.

“…The microstructure of sputtered 10-nm thin films of equiatomic binary alloys of CoPt and FePt was characterized using transmission electron microscopy (TEM)…”
Get full text

Angle-dependent switching of granular and multilayer perpendicular media by Thomson, T., Coffey, K.R., Thiele, J.-U.

“…Optimal writing of media where full remanent switching is achieved depends on the reversal mechanism and is of interest in designing ultrahigh density magnetic…”
Get full text

Temperature dependence of the magnetization reversal of thin-film longitudinal magnetic recording media by Coffey, K.R., Thiele, J.-U., Thomson, T.

“…As longitudinal magnetic recording media approach the superparamagnetic limit, temperature-dependent effects are becoming ever more important. This work…”
Get full text