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Author: john bonevich

Displaying records 11 to 20 of 65 records.
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11. Silicon Nanowire Nonvolatile-Memory with Varying HfO2 Charge Trapping Layer Thickness
Published: 12/9/2009
Authors: Xiaoxiao Zhu, Qiliang Li, D. E Ioannou, H Gu, Helmut Baumgart, John E Bonevich, John S Suehle, Curt A Richter
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907138

12. Compositional Control in Electrodeposited Pt(subscript 100-x)Cu(subscript x) Alloys.
Published: 10/7/2009
Authors: J Mallett, Ugo Bertocci, John E Bonevich, Thomas P Moffat
Abstract: The electrodeposition of Pt100-xCux alloys is demonstrated using an electrolyte comprised of 1mol/L H2SO4, 0.001 mol/L K2PtCl4 and 0.1 mol/L CuSO4. Film growth proceeds by facile Cu underpotential deposition (upd) occurring in parallel with Pt overpo ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902596

13. Superconformal Electrodeposition of Co and Co-Fe Alloys using 2-Mercapto-5-benzimidazolesulfonic Acid (MBIS)
Published: 6/10/2009
Authors: Chang H. Lee, John E Bonevich, Joseph E. Davies, Thomas P Moffat
Abstract: Superconformal Co(Fe) filling of submicrometer trenches by electrodeposition is demonstrated in the presence of 2-mercapto-5-benzimidazolesulfonic acid (MBIS). MBIS inhibits the initiation of Co deposition. Inhibition breakdown is characterized by ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902266

14. AC susceptibility studies of magnetic relaxation in nanoparticles of Ni dispersed in silica
Published: 4/1/2009
Authors: V Singh, M Seehra, John E Bonevich
Abstract: Temperature dependence of AC susceptibilities χ' and χ'' are reported using frequencies fm = 0.1 Hz, 1 Hz, 99 Hz, 499 Hz and 997 Hz for nanoparticles (NPs) of Ni dispersed in silica (Ni/SiO2:15/85) with the mean sizes D=3.8 nm, ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=900254

15. A Method for Fabricating Conductometric Gas Sensors of Metal Oxide Nanotubes Formed in Porous Aluminum Oxide Membranes
Published: 2/2/2009
Authors: Reit Artzi-Gerlitz, Kurt D Benkstein, David L. Lahr, Joshua L. Hertz, Christopher B Montgomery, John E Bonevich, Stephen Semancik, Michael J Tarlov
Abstract: We describe a general, simple strategy for fabricating conductometric gas sensors from metal oxide nanotubes formed in nanoporous aluminum oxide membranes. In this approach, the aluminum oxide membrane serves as both a template for growth of the sens ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=832271

16. 400-Fold Reduction in Saturation Field by Interlayering
Published: 1/13/2009
Authors: William F. Egelhoff Jr., John E Bonevich, Philip Pong, John Unguris, Robert D McMichael, Gery R Stafford, Carlos R Beauchamp
Abstract: The buildup of stress with increasing thickness of magnetic thin films is a common phenomenon that often induces undesirable saturation fields that can convert an otherwise magnetically soft film into a magnetically hard one. We have found that by i ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854046

17. Inducing analytical orthogonality in tungsten oxide-based microsensors using materials structure and dynamic temperature control
Published: 1/4/2009
Authors: Kurt D Benkstein, Baranidharan Raman, David L. Lahr, John E Bonevich, Stephen Semancik
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902372

18. Nickel-Silica Nanocomposite: Variation of the Blocking Temperature With Magnetic Field and Measuring Frequency
Published: 2/27/2008
Authors: V Singh, M Seehra, John E Bonevich
Abstract: The variation of the blocking temperature T(subscript B) with measuring frequency f(subscript m) and applied field H are reported for Ni nanoparticles (NPs) embedded in SiO(subscript 2) matrix with the nominal composition Ni/SiO(subscript 2) (15/85). ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=853519

19. Finite Size and Interparticle Interaction Effects in the Magnetic Properties of NiO Nanoparticles
Published: 1/2/2008
Authors: H Shim, M Seehra, John E Bonevich
Abstract: Magnetic properties of NiO nanoparticles (NP) prepared by the sol-gel method in the size range D = 5 nm to 20 nm, with and without oleic acid (OA) coating, are reported. Transmission electron microscopy (TEM) studies show the morphology of the small ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=853452

20. Development of Ultra-Low Magnetic Field Sensors With Magnetic Tunnel Junctions
Published: 10/31/2007
Authors: Philip Pong, John E Bonevich, William F. Egelhoff Jr.
Abstract: The discovery of tunneling magnetoresistance (TMR) has enhanced the magnetoresistance (MR) ratio from the giant magnetoresistance (GMR) regime of around 10% to over 400% at room temperature. A combination of magnetic tunnel junctions with high magnet ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=853513