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  Single crystalline superstructured stable single domain magnetite nanoparticles

Reichel, V., Kovács, A., Kumari, M., Bereczk-Tompa, É., Schneck, E., Diehle, P., et al. (2017). Single crystalline superstructured stable single domain magnetite nanoparticles. Scientific Reports, 7: 45484. doi:10.1038/srep45484.

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 Creators:
Reichel, Victoria1, Author           
Kovács, András, Author
Kumari, Monika, Author
Bereczk-Tompa, Éva, Author
Schneck, Emanuel2, Author           
Diehle, Patrick, Author
Pósfai, Mihály, Author
Hirt, Ann M., Author
Duchamp, Martial, Author
Dunin-Borkowski, Rafal E., Author
Faivre, Damien1, Author           
Affiliations:
1Damien Faivre, Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863290              
2Emanuel Schneck, Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_2074300              

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Free keywords: Magnetic materials
 Abstract: Magnetite nanoparticles exhibit magnetic properties that are size and organization dependent and, for applications that rely on their magnetic state, they usually have to be monodisperse. Forming such particles, however, has remained a challenge. Here, we synthesize 40 nm particles of magnetite in the presence of polyarginine and show that they are composed of 10 nm building blocks, yet diffract like single crystals. We use both bulk magnetic measurements and magnetic induction maps recorded from individual particles using off-axis electron holography to show that each 40 nm particle typically contains a single magnetic domain. The magnetic state is therefore determined primarily by the size of the superstructure and not by the sizes of the constituent sub-units. Our results fundamentally demonstrate the structure – property relationship in a magnetic mesoparticle.

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Language(s): eng - English
 Dates: 2017-03-302017
 Publication Status: Issued
 Pages: -
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1038/srep45484
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Title: Scientific Reports
  Abbreviation : Sci. Rep.
Source Genre: Journal
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Publ. Info: London, UK : Nature Publishing Group
Pages: - Volume / Issue: 7 Sequence Number: 45484 Start / End Page: - Identifier: ISSN: 2045-2322