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Magnetic and electronic properties of bimagnetic materials comprising cobalt particles within hollow silica decorated with magnetite nanoparticles
http://hdl.handle.net/10091/17711
http://hdl.handle.net/10091/177110841bc86-fca3-473a-b79a-29e3e1013bbc
| 名前 / ファイル | ライセンス | アクション |
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Magnetic_electronic_properties_bimagnetic_materials.pdf (2.2 MB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||||||||||||||||||||||||||
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| 公開日 | 2014-07-09 | |||||||||||||||||||||||||||||
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| タイトル | Magnetic and electronic properties of bimagnetic materials comprising cobalt particles within hollow silica decorated with magnetite nanoparticles | |||||||||||||||||||||||||||||
| 言語 | ||||||||||||||||||||||||||||||
| 言語 | eng | |||||||||||||||||||||||||||||
| DOI | ||||||||||||||||||||||||||||||
| 関連識別子 | https://doi.org/10.1063/1.4822299 | |||||||||||||||||||||||||||||
| 関連名称 | 10.1063/1.4822299 | |||||||||||||||||||||||||||||
| 資源タイプ | ||||||||||||||||||||||||||||||
| 資源 | http://purl.org/coar/resource_type/c_6501 | |||||||||||||||||||||||||||||
| タイプ | journal article | |||||||||||||||||||||||||||||
| 著者 |
Okada, T
× Okada, T
× Gonzalez-Alfaro, Y
× Espinosa, A
× Watanabe, N
× Haeiwa, T
× Sonehara, M
× Mishima, S
× Sato, T
× Munoz-Noval, A
× Aranda, P
× Garcia-Hernandez, M
× Ruiz-Hitzky, E
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| 信州大学研究者総覧へのリンク | ||||||||||||||||||||||||||||||
| 氏名 | Okada, T | |||||||||||||||||||||||||||||
| URL | http://soar-rd.shinshu-u.ac.jp/profile/ja.WpDFbpkh.html | |||||||||||||||||||||||||||||
| 信州大学研究者総覧へのリンク | ||||||||||||||||||||||||||||||
| 氏名 | Haeiwa, T | |||||||||||||||||||||||||||||
| URL | http://soar-rd.shinshu-u.ac.jp/profile/ja.ZNkeZVkh.html | |||||||||||||||||||||||||||||
| 信州大学研究者総覧へのリンク | ||||||||||||||||||||||||||||||
| 氏名 | Sonehara, M | |||||||||||||||||||||||||||||
| URL | http://soar-rd.shinshu-u.ac.jp/profile/ja.WhfCbpkh.html | |||||||||||||||||||||||||||||
| 信州大学研究者総覧へのリンク | ||||||||||||||||||||||||||||||
| 氏名 | Sato, T | |||||||||||||||||||||||||||||
| URL | http://soar-rd.shinshu-u.ac.jp/profile/ja.yNSNbpkh.html | |||||||||||||||||||||||||||||
| 出版者 | ||||||||||||||||||||||||||||||
| 出版者 | AMER INST PHYSICS | |||||||||||||||||||||||||||||
| 引用 | ||||||||||||||||||||||||||||||
| 内容記述 | JOURNAL OF APPLIED PHYSICS. 114(12):124304 (2013) | |||||||||||||||||||||||||||||
| 書誌情報 |
JOURNAL OF APPLIED PHYSICS 巻 114, 号 12, p. 124304, 発行日 2013-09-28 |
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| 抄録 | ||||||||||||||||||||||||||||||
| 内容記述 | Bimagnetic materials were fabricated by decorating the external surface of rattle-type hollow silica microspheres (which themselves contain metallic cobalt nanoparticles) with magnetite nanoparticles; thus, each magnetic substance was spatially isolated by the silica shell. The amount of magnetite decoration on the co-occluded hollow silica was varied from 1 to 17 mass %. Magnetic and electronic properties of the resulting bimagnetic materials were characterized by superconducting quantum interference device measurements and X-ray absorption spectroscopy, respectively. The ferrous iron in the bimagnetic sample was slightly more oxidized than in the magnetite reference, probably from some charge-transfer because of the SiO2 surface contact, although the overall oxidation state of the samples is very similar to that of magnetite. The temperature dependence of the sample magnetization recorded with Zero Field Cooling and Field Cooling resulted in blocking temperatures for the bimagnetic materials that were close to that of magnetite nanoparticles (176K) and were lower than that for the bare Co-occluded hollow silica (which was above room temperature). Values of coercive force and exchange bias at 300K became quite small after decoration with only minimal amounts of magnetite nanoparticles (1-3 mass %) and were lower than those of magnetite. This is the first example of enhancing superparamagnetism by spatial separation of both Co and magnetite magnetic nanoparticles using a thin wall of diamagnetic silica. | |||||||||||||||||||||||||||||
| 資源タイプ（コンテンツの種類） | ||||||||||||||||||||||||||||||
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| 収録物識別子タイプ | ISSN | |||||||||||||||||||||||||||||
| 収録物識別子 | 0021-8979 | |||||||||||||||||||||||||||||
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| 収録物識別子タイプ | NCID | |||||||||||||||||||||||||||||
| 収録物識別子 | AA00693547 | |||||||||||||||||||||||||||||
| 権利 | ||||||||||||||||||||||||||||||
| 権利情報 | Copyright© 2013 AIP Publishing LLC. | |||||||||||||||||||||||||||||
| 出版タイプ | ||||||||||||||||||||||||||||||
| 出版タイプ | VoR | |||||||||||||||||||||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||||||||||||||||||||
| WoS | ||||||||||||||||||||||||||||||
| URL | http://gateway.isiknowledge.com/gateway/Gateway.cgi?&GWVersion=2&SrcAuth=ShinshuUniv&SrcApp=ShinshuUniv&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000325391100054 | |||||||||||||||||||||||||||||
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Cite as
Okada, T, Gonzalez-Alfaro, Y, Espinosa, A, Watanabe, N, Haeiwa, T, Sonehara, M, Mishima, S, Sato, T, Munoz-Noval, A, Aranda, P, Garcia-Hernandez, M, Ruiz-Hitzky, E, 2013, Magnetic and electronic properties of bimagnetic materials comprising cobalt particles within hollow silica decorated with magnetite nanoparticles: AMER INST PHYSICS, 124304– p.
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