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You searched on: Author: robert shull

Displaying records 21 to 30 of 81 records.
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21. Probing the Growth and Aging of Colloidal Cobalt Nanoparticles
Published: 6/11/2009
Authors: Guangjun Cheng, Cindi L Dennis, Robert D Shull, Angela R Hight Walker
Abstract: We have combined transmission electron microscopy (TEM) and magnetic measurements to characterize the growth of colloidal cobalt (Co) nanoparticles during synthesis and their subsequent stability in air. During the growth, TEM measurements have shown ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=842608

22. Dipolar Chains formed by synthesized cobalt nanocubes
Published: 5/11/2009
Authors: Guangjun Cheng, Robert D Shull, Angela R Hight Walker
Abstract: Cobalt nanocubes with an average edge length of 50 nm and the epsilon crystalline structure were synthesized via thermo-decomposition in 1,2-dichlorobenzene at 120 oC in the presence of the surfactants. These nanocubes form dipolar chains upon drying ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=842508

23. In-plane bias in a patterned ferromagnetic/antiferromagnetic bilayer
Published: 4/30/2009
Authors: Yury P. Kabanov, Valerian I. Nikitenko, Oleg A. Tikhomirov, William F. Egelhoff Jr., Alexander J. Shapiro, Robert D Shull
Abstract: Exchange bias in bi- and multilayer magnetic systems is usually ascribed to the existence of transient magnetic structures at the interfaces between adjacent layers. Here, we report the observation of a similar phenomenon in the lateral direction, in ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854169

24. Physical characterization methods for iron-oxide contrast agents encapsulated within a targeted liposome-based delivery system
Published: 4/16/2008
Authors: John A Dagata, Natalia Farkas, Cindi L Dennis, Robert D Shull, Vincent A Hackley, Charles W Yang, Kathleen F Pirollo, Esther H Chang
Abstract: Intact liposome-based targeted nanoparticle delivery systems (NDS) are immobilized by nonselective binding and characterized by scanning probe microscopy (SPM) in a fluid imaging environment. The size, size distribution, functionality, and stability ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=823031

25. On the nature of asymetry of nucleation centers activity in ultrathin Co films and Co/Pt multilayers
Published: 1/14/2008
Authors: Yu L Iunin, Yury P. Kabanov, Valerian Ivanovich Nikitenko, X M Cheng, Alexander J. Shapiro, C L Chien, Robert D Shull
Abstract: Magnetization reversal in ultrathin Pt(10 nm)/Co(0.6 nm)/Pt(3 nm) magnetic films and Pt(10 nm)/[Co(d)/Pt(1 nm)]_{n}/ Pt(2 nm) (d = 0.4, 0.6, 0.8 nm, n = 2, 4) multilayers with perpendicular anisotropy has been studied using Kerr microscopy. These ma ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854024

26. On the nature of asymmetry of nucleation enters activity in ultrathin Co films and Co/Pt multilayers
Published: 1/7/2008
Authors: Yury L. Iunin, Yury P. Kabanov, Valerian I. Nikitenko, X.M. Cheng, Alexander J. Shapiro, C L Chien, Robert D Shull
Abstract: Magnetization reversal in ultrathin Pt(10 nm)/Co(0.6 nm)/Pt(3 nm) magnetic films and Pt(10 nm)/[Co(d)/Pt(l nm)]n/ Pt(2 nm) (d = 0.4nm, 0.6nm, 0.8 nm, n = 2, 4) multilayers with perpendicular anisotropy has been studied using Kerr microscopy. These ma ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854430

27. Influence of the Colloidal Environment on the Magnetic Behavior of Cobalt Nanoparticles
Published: 11/6/2007
Authors: Guangjun Cheng, Cindi L Dennis, Robert D Shull, Angela R Hight Walker
Abstract: The magnetic properties of 10 nm cobalt (Co) nanoparticles in 1,2-dicholorbenenze (DCB) are investigated via a series of magnetization (M) vs. temperature (T) measurements. A rapid rise in magnetization around 250 K during warming and a sudden drop a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841084

28. Nanocrystalline and Nanocomposite Magnetic Materials and Their Applications
Published: 7/2/2007
Author: Robert D Shull
Abstract: Nanocrystalline materials can possess bulk properties quite different from those commonly associated with conventional large-grained materials. Nanocomposites, a subset of nanocrystalline materials, in addition have been found to possess magnetic pr ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=853496

29. Teaching Materials Science to Children, Ages 8-14
Published: 6/7/2007
Author: Robert D Shull
Abstract: A pre-high school science program, Adventure In Science (AIS), has been running in the Gaithersburg, Maryland area for the past 33 years. It s President, Dr. Robert D. Shull, a scientist in the Materials Science and Engineering Laboratory at the Nat ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=853497

30. The Influence of Temperature on the Magnetic Behavior of Collodial Cobalt Nanoparticles
Published: 6/7/2007
Authors: Cindi L Dennis, Brian B. Maranville, Angela R Hight Walker, Robert D Shull
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901755



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