TY  - JOUR
AU  - Reichel, Victoria
AU  - Kovács, András
AU  - Kumari, Monika
AU  - Bereczk-Tompa, Éva
AU  - Schneck, Emanuel
AU  - Diehle, Patrick
AU  - Pósfai, Mihály
AU  - Hirt, Ann M.
AU  - Duchamp, Martial
AU  - Dunin-Borkowski, Rafal
AU  - Faivre, Damien
TI  - Single crystalline superstructured stable single domain magnetite nanoparticles
JO  - Scientific reports
VL  - 7
SN  - 2045-2322
CY  - London
PB  - Nature Publishing Group
M1  - FZJ-2017-06631
SP  - 45484 -
PY  - 2017
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000398405600001
C6  - pmid:28358051
DO  - DOI:10.1038/srep45484
UR  - https://juser.fz-juelich.de/record/837854
ER  -