Synthesis and atomic-level characterization of Ni nanoparticles in Al2O3 matrix

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Publication Type Journal Article
School or College College of Engineering
Department Materials Science & Engineering
Creator Tiwari, Ashutosh
Other Author Kumar, D.; Pennycook, S. J.; Lupini, A.; Duscher, G.; Narayan, J.
Title Synthesis and atomic-level characterization of Ni nanoparticles in Al2O3 matrix
Date 2002
Description Single domain magnetic nickel nanocrystals were embedded in alumina matrix using a pulsed-laser deposition technique. Structural characterization carried out at the atomic level using scanning transmission electron microscopy with atomic number contrast (STEM-Z) in conjunction with electron energy loss spectroscopy have revealed that the Ni particles are well separated and have interfaces with the host matrix that are atomically sharp and free of any oxide layer. An excellent correlation was found between particle sizes determined theoretically from magnetization versus field data and experimentally using STEM-Z which indicates the absence of any magnetically dead layers on the Ni nanoparticles within an experimental error of 0.1 monolayer.
Type Text
Publisher American Institute of Physics (AIP)
Journal Title Applied Physics Letters
Volume 81
Issue 22
First Page 4204
Last Page 4206
DOI 10.1063/1.1525052
citatation_issn 36951
Subject Nanophase magnetic materials; Alumina
Subject LCSH Nickel; Nanocrystals; Aluminum oxide; Magnetic materials; Nanomedicine
Language eng
Bibliographic Citation Kumar, D., Pennycook, S. J., Lupini, A., Duscher, G., Tiwari, A., & Narayan, J. (2002). Synthesis and atomic-level characterization of Ni nanoparticles in Al2O3 matrix. Applied Physics Letters, 81(22), 4204-6.
Rights Management (c)American Institute of Physics. The following article appeared in Kumar, D., Pennycook, S. J., Lupini, A., Duscher, G., Tiwari, A., & Narayan, J., Applied Physics Letters, 81(22), 2002 and may be found at http://dx.doi.org/10.1063/1.1525052
Format Medium application/pdf
Format Extent 125,278 bytes
Identifier ir-main,12084
ARK ark:/87278/s6ff49f3
Setname ir_uspace
ID 702561
Reference URL https://collections.lib.utah.edu/ark:/87278/s6ff49f3
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