Cobalt–poly(amido amine) superparamagnetic nanocomposites
Metallic cobalt–dendrimer nanocomposites were prepared using generation 5 poly(amido amine) dendrimers with primary amino termini. Cobalt loading of ∼ 38 atoms per dendrimer was determined by atomic absorption spectrophotometry. Magnetic properties of the cobalt–dendrimer nanocomposites were investi...
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| Veröffentlicht in: | Materials letters 2008-06, Vol.62 (17), p.3131-3134 |
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| container_title | Materials letters |
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| creator | Atwater, James E. Akse, James R. Holtsnider, John T. |
| description | Metallic cobalt–dendrimer nanocomposites were prepared using generation 5 poly(amido amine) dendrimers with primary amino termini. Cobalt loading of ∼
38 atoms per dendrimer was determined by atomic absorption spectrophotometry. Magnetic properties of the cobalt–dendrimer nanocomposites were investigated across the temperature range from 2 to 300 K by SQUID magnetometry. Magnetization as a function of temperature and applied field strength was studied in zero field cooled samples. Magnetization–demagnetization curves (hysteresis loops) were also acquired at temperatures between 10 and 300 K. These results clearly indicate superparamagnetism for the nanocomposites with a characteristic blocking temperature of ∼
50 K. |
| doi_str_mv | 10.1016/j.matlet.2008.02.004 |
| format | Article |
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38 atoms per dendrimer was determined by atomic absorption spectrophotometry. Magnetic properties of the cobalt–dendrimer nanocomposites were investigated across the temperature range from 2 to 300 K by SQUID magnetometry. Magnetization as a function of temperature and applied field strength was studied in zero field cooled samples. Magnetization–demagnetization curves (hysteresis loops) were also acquired at temperatures between 10 and 300 K. These results clearly indicate superparamagnetism for the nanocomposites with a characteristic blocking temperature of ∼
50 K.</description><subject>Cobalt</subject><subject>Dendrimer</subject><subject>Magnetic materials</subject><subject>Nanocomposites</subject><issn>0167-577X</issn><issn>1873-4979</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><recordid>eNp9kU1qHDEQhUVIiMeOb2DCrIK96I7-W8JgMEP-wJBNAtkJtVRja-hutSWNwTvfITfMSSJnbCfZeKNa6KtXVe8hdERwSzCR7zftaMsApaUYqxbTFmP-Ai2I6ljDdadfokXFukZ03Y89tJ_zBldCY_4a7VHMBMVSLdDpKvZ2KL_ufs5xuD22Y_BxWd8JTpZ5O0OabbKjvZygBLec7BRdHOeYQ4H8Br1a2yHD4UM9QN8_fvi2-txcfP30ZXV-0TiueWmk8D3jfi1kjy3xlHNPnMJKeMd7J6WshVsqgUvFmLY9k4xo6ZRe90oDZwfobKc7b_sRvIOpJDuYOYXRplsTbTD__0zhylzGG0MV51qJKvDuQSDF6y3kYsaQHQyDnSBus2GMUtr9AY-fBYliQghS7aso36EuxZwTrJ_2IdjcB2Q2ZheQuQ_IYGqq_bXt7b-3PDU9JvL3WKiO3gRIJrsAkwMfErhifAzPT_gNp06luA</recordid><startdate>20080630</startdate><enddate>20080630</enddate><creator>Atwater, James E.</creator><creator>Akse, James R.</creator><creator>Holtsnider, John T.</creator><general>Elsevier B.V</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>5PM</scope></search><sort><creationdate>20080630</creationdate><title>Cobalt–poly(amido amine) superparamagnetic nanocomposites</title><author>Atwater, James E. ; Akse, James R. ; Holtsnider, John T.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c494t-65db34df56b0a1d244d1c8085dc4bc666c4b4a26e468339ab363196c89fb89e43</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>Cobalt</topic><topic>Dendrimer</topic><topic>Magnetic materials</topic><topic>Nanocomposites</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Atwater, James E.</creatorcontrib><creatorcontrib>Akse, James R.</creatorcontrib><creatorcontrib>Holtsnider, John T.</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>Materials letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Atwater, James E.</au><au>Akse, James R.</au><au>Holtsnider, John T.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Cobalt–poly(amido amine) superparamagnetic nanocomposites</atitle><jtitle>Materials letters</jtitle><addtitle>Mater Lett</addtitle><date>2008-06-30</date><risdate>2008</risdate><volume>62</volume><issue>17</issue><spage>3131</spage><epage>3134</epage><pages>3131-3134</pages><issn>0167-577X</issn><eissn>1873-4979</eissn><abstract>Metallic cobalt–dendrimer nanocomposites were prepared using generation 5 poly(amido amine) dendrimers with primary amino termini. Cobalt loading of ∼
38 atoms per dendrimer was determined by atomic absorption spectrophotometry. Magnetic properties of the cobalt–dendrimer nanocomposites were investigated across the temperature range from 2 to 300 K by SQUID magnetometry. Magnetization as a function of temperature and applied field strength was studied in zero field cooled samples. Magnetization–demagnetization curves (hysteresis loops) were also acquired at temperatures between 10 and 300 K. These results clearly indicate superparamagnetism for the nanocomposites with a characteristic blocking temperature of ∼
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| issn | 0167-577X 1873-4979 |
| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Cobalt Dendrimer Magnetic materials Nanocomposites |
| title | Cobalt–poly(amido amine) superparamagnetic nanocomposites |
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