| Item type |
デフォルトアイテムタイプ_（フル）(1) |
| 公開日 |
2023-03-18 |
| タイトル |
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タイトル |
Correlation between particle size/domain structure and magnetic properties of highly crystalline Fe3O4 nanoparticles |
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言語 |
en |
| 作成者 |
Li, Qing
Kartikowati, Christina W.
Horie, Shinji
Ogi, Takasi
Iwaki, Toru
Okuyama, Kikuo
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| アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利情報 |
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権利情報 |
© The Author(s) 2017. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
| 内容記述 |
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内容記述 |
Highly crystalline single-domain magnetite Fe3O4 nanoparticles (NPs) are important, not only for fundamental understanding of magnetic behaviour, but also for their considerable potential applications in biomedicine and industry. Fe3O4 NPs with sizes of 10–300 nm were systematically investigated to reveal the fundamental relationship between the crystal domain structure and the magnetic properties. The examined Fe3O4 NPs were prepared under well-controlled crystal growth conditions using a large-scale liquid precipitation method. The crystallite size of cube-like NPs estimated from X-ray diffraction pattern increased linearly as the particle size (estimated by transmission electron microscopy) increased from 10 to 64.7 nm, which indicates that the NPs have a single-domain structure. This was further confirmed by the uniform lattice fringes. The critical size of approximately 76 nm was obtained by correlating particle size with both crystallite size and magnetic coercivity; this was reported for the first time in this study. The coercivity of cube-like Fe3O4 NPs increased to a maximum of 190 Oe at the critical size, which suggests strong exchange interactions during spin alignment. Compared with cube-like NPs, sphere-like NPs have lower magnetic coercivity and remanence values, which is caused by the different orientations of their polycrystalline structure. |
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言語 |
en |
| 内容記述 |
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内容記述タイプ |
Other |
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内容記述 |
This work was supported by JSPS KAKENHI Grant Number 26709061 and 16K13642. This work was partly supported by the Center for Functional Nano Oxide at Hiroshima University. The authors also gratefully acknowledge the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan for providing scholarships (C. W. K.). |
| 出版者 |
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出版者 |
Nature Research |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 出版タイプ |
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|
出版タイプ |
VoR |
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出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 関連情報 |
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|
識別子タイプ |
DOI |
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関連識別子 |
10.1038/s41598-017-09897-5 |
| 関連情報 |
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|
識別子タイプ |
DOI |
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|
関連識別子 |
https://doi.org/10.1038/s41598-017-09897-5 |
| 収録物識別子 |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
2045-2322 |
| 開始ページ |
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|
開始ページ |
9894 |
| 書誌情報 |
Scientific Reports
Scientific Reports
巻 7,
p. 9894,
発行日 2017-08-30
|
| 旧ID |
48729 |
SciRep_7_9894.pdf (2.0 MB)
