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Author: john bonevich

Displaying records 31 to 40 of 68 records.
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31. Origin of Exchange Decoupling Effects in High-Coercivity Air-Annealed CoPd Multilayers
Published: 5/1/2005
Authors: William F. Egelhoff Jr., Robert D McMichael, J Mallett, Alexander J. Shapiro, Cedric John Powell, John E Bonevich, J H Judy, J H Thomas, Erik B. Svedberg
Abstract: We have achieved excellent exchange decoupling of grains in CoPd multilayers by annealing in air at 300 C. Samples exhibit a slope in the hysteresis loop close to 1.0, nucleation fields as large as 1.1 T, and coercivities as large as 1.6 T. These are ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=853369

32. A Bayesian/Maximum Entropy Method for the Certification of a Nanocrystallite-Size NIST Standard Reference Material
Published: 7/1/2004
Authors: N G Armstrong, W Kalceff, James P Cline, John E Bonevich
Abstract: A Bayesian/Maximum Entropy (MaxEnt) method for determining crystallite size distribution and morphology from size-broadened x-ray line profiles is presented. This method will be used in certifying a nanocrystallite-size standard reference material ( ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851134

33. Electrical Properties of Superfilled Sub-Micrometer Silver Metallizations
Published: 7/1/2004
Authors: Daniel Josell, C + Burkhard, David R Kelley, Yi-Wen Cheng, R R Keller, John E Bonevich, Y Li, B C Baker, C A Witt, Thomas P Moffat
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=853319

34. Bayesian Inference of Nanoparticle-Broadened X-Ray Line Profiles
Series: Journal of Research (NIST JRES)
Published: 2/1/2004
Authors: N G Armstrong, W Kalceff, James P Cline, John E Bonevich
Abstract: A single and self-contained method for determining the crystallite-size distribution and shape from experimental line profile data is presented. We have shown that the crystallite-size distribution can be determined without assuming a functional for ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=850655

35. Coercivities above 10 kOe in CoPd Superlattices
Published: 1/1/2004
Authors: William F. Egelhoff Jr., Cedric John Powell, L Gan, P J Chen, H Ettendgui, D Tirosh, Robert D McMichael, Mark D Stiles, J Mallett, Alexander J. Shapiro, John E Bonevich
Abstract: We have achieved excellent grain isolation in CoPd superlattices by using 10 nm Au as both an underlayer and an overlayer and diffusing Au into the grain boundaries by annealing for {approximately equal to} 30 min. at 300 degrees C. The grain isola ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620001

36. Structure and Magnetic Properties of Electrodeposition Co on n-GaAs (001)
Published: 9/19/2003
Authors: A X Ford, John E Bonevich, Robert D McMichael, Mark D Vaudin, Thomas P Moffat
Abstract: Co thin films have been electrodeposited on n-type (001) GaAs. The structure and texture of the films were investigated using x-ray diffraction (XRD) and transmission electron microscopy (TEM) while the magnetic properties were examined using a vibr ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=853237

37. Rapid Deformation of Thin Gold Layers in Polymer Matrices Studied by X-Ray Reflectivity
Published: 8/1/2003
Authors: K Shin, H Wang, Sushil K. Satija, Charles C Han, Daniel Josell, John E Bonevich
Abstract: We have used X-ray reflectivity to measure the morphological profiles of thin Au layers of three different average thicknesses sandwiched between two polystyrene layers with different molecular weights, Mw = 52.3k and Mw - 168.5k. The results showed ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=853270

38. Tuning the Magnetic Properties of Multilayer Nanowires
Published: 5/12/2003
Authors: John E Bonevich, Limin Sun
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901874

39. Tuning the Response of Magnetic Suspensions
Published: 5/1/2003
Authors: M. Chen, L Sun, John E Bonevich, Daniel H. Reich, C L Chien, P C Searson
Abstract: The magnetic properties of multilayer ferromagnetic/nonmagnetic (FM/NM) nanowires can be tailored by controlling the composition and length of the FM and NM segments. Manipulation of properties such as the magnetic easy axis, Curie temperature (TC), ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=853228

40. Effects of interlayer electrode thickness in Nb/(MoSi^d2^/Nb)^dN^ stacked Josephson junctions
Published: 4/14/2003
Authors: Yonuk Chong, Paul David Dresselhaus, Samuel Paul Benz, John E Bonevich
Abstract: Dense vertically stacked Josephson junction arrays are being developed because they are desirable for voltage metrology applications. We present measurements of the uniformity and reproducibility of Nb/(MoSi^u2^/Nb)N vertically stacked junctions that ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=30885



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