Structure and composition of Au/Co magneto-plasmonic nanoparticles
The fabrication of bimetallic magnetic nanoparticles (NPs) smaller than the size of single magnetic domain is very challenging because of the agglomeration, non-uniform size, and possible complex chemistry at nanoscale. In this paper, we present an alloyed ferromagnetic 4 ± 1 nm thiolated Au/Co magn...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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2013
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| Online Access: | http://eprints.uanl.mx/8912/1/Structure%20and%20composition%20of%20Au_Co%20magneto-plasmonic%20nanoparticles.pdf |
| _version_ | 1824370865166352384 |
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| author | Bhattarai, Nabraj Casillas, Gilberto Khanal, Subarna Bahena, Daniel Velázquez Salazar, J. Jesús Mejía Rosales, Sergio Ponce, Arturo Dravid, Vinayak Whetten, Robert L. Mariscal, Marcelo M. Yacamán, Miguel José |
| author_facet | Bhattarai, Nabraj Casillas, Gilberto Khanal, Subarna Bahena, Daniel Velázquez Salazar, J. Jesús Mejía Rosales, Sergio Ponce, Arturo Dravid, Vinayak Whetten, Robert L. Mariscal, Marcelo M. Yacamán, Miguel José |
| author_sort | Bhattarai, Nabraj |
| collection | Repositorio Institucional |
| description | The fabrication of bimetallic magnetic nanoparticles (NPs) smaller than the size of single magnetic domain is very challenging because of the agglomeration, non-uniform size, and possible complex chemistry at nanoscale. In this paper, we present an alloyed ferromagnetic 4 ± 1 nm thiolated Au/Co magnetic NPs with decahedral and icosahedral shape. The NPs were characterized by Cs-corrected scanning transmission electron microscopy (STEM) and weretheoretically studied by Grand Canonical Monte Carlo simulations. Comparison of Z-contrast imaging and energy dispersive x-ray spectroscopy used jointly with STEM simulated images from theoretical models uniquely showed an inhomo- geneous alloying with minor segregation. The magnetic measurements obtained from superconducting quantum interference device magnet- ometer exhibited ferromagnetic behavior. This magnetic nanoalloy in the range of single domain is fully magnetized and carries significance as a promising candidate for magnetic data recording, permanent magnetization, and biomedical applications. |
| format | Article |
| id | eprints-8912 |
| institution | UANL |
| language | English |
| publishDate | 2013 |
| record_format | eprints |
| spelling | eprints-89122016-02-22T22:14:52Z http://eprints.uanl.mx/8912/ Structure and composition of Au/Co magneto-plasmonic nanoparticles Bhattarai, Nabraj Casillas, Gilberto Khanal, Subarna Bahena, Daniel Velázquez Salazar, J. Jesús Mejía Rosales, Sergio Ponce, Arturo Dravid, Vinayak Whetten, Robert L. Mariscal, Marcelo M. Yacamán, Miguel José Q Ciencias en General QC Física The fabrication of bimetallic magnetic nanoparticles (NPs) smaller than the size of single magnetic domain is very challenging because of the agglomeration, non-uniform size, and possible complex chemistry at nanoscale. In this paper, we present an alloyed ferromagnetic 4 ± 1 nm thiolated Au/Co magnetic NPs with decahedral and icosahedral shape. The NPs were characterized by Cs-corrected scanning transmission electron microscopy (STEM) and weretheoretically studied by Grand Canonical Monte Carlo simulations. Comparison of Z-contrast imaging and energy dispersive x-ray spectroscopy used jointly with STEM simulated images from theoretical models uniquely showed an inhomo- geneous alloying with minor segregation. The magnetic measurements obtained from superconducting quantum interference device magnet- ometer exhibited ferromagnetic behavior. This magnetic nanoalloy in the range of single domain is fully magnetized and carries significance as a promising candidate for magnetic data recording, permanent magnetization, and biomedical applications. 2013 Article PeerReviewed text en cc_by_nc_nd http://eprints.uanl.mx/8912/1/Structure%20and%20composition%20of%20Au_Co%20magneto-plasmonic%20nanoparticles.pdf http://eprints.uanl.mx/8912/1.haspreviewThumbnailVersion/Structure%20and%20composition%20of%20Au_Co%20magneto-plasmonic%20nanoparticles.pdf Bhattarai, Nabraj y Casillas, Gilberto y Khanal, Subarna y Bahena, Daniel y Velázquez Salazar, J. Jesús y Mejía Rosales, Sergio y Ponce, Arturo y Dravid, Vinayak y Whetten, Robert L. y Mariscal, Marcelo M. y Yacamán, Miguel José (2013) Structure and composition of Au/Co magneto-plasmonic nanoparticles. MRS Communications, 3 (3). pp. 177-183. ISSN 2159-6859 |
| spellingShingle | Q Ciencias en General QC Física Bhattarai, Nabraj Casillas, Gilberto Khanal, Subarna Bahena, Daniel Velázquez Salazar, J. Jesús Mejía Rosales, Sergio Ponce, Arturo Dravid, Vinayak Whetten, Robert L. Mariscal, Marcelo M. Yacamán, Miguel José Structure and composition of Au/Co magneto-plasmonic nanoparticles |
| thumbnail | https://rediab.uanl.mx/themes/sandal5/images/online.png |
| title | Structure and composition of Au/Co magneto-plasmonic nanoparticles |
| title_full | Structure and composition of Au/Co magneto-plasmonic nanoparticles |
| title_fullStr | Structure and composition of Au/Co magneto-plasmonic nanoparticles |
| title_full_unstemmed | Structure and composition of Au/Co magneto-plasmonic nanoparticles |
| title_short | Structure and composition of Au/Co magneto-plasmonic nanoparticles |
| title_sort | structure and composition of au co magneto plasmonic nanoparticles |
| topic | Q Ciencias en General QC Física |
| url | http://eprints.uanl.mx/8912/1/Structure%20and%20composition%20of%20Au_Co%20magneto-plasmonic%20nanoparticles.pdf |
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