TY  - JOUR
AU  - Herlitschke, Marcus
AU  - Disch, S.
AU  - Sergueev, I.
AU  - Schlage, K.
AU  - Wetterskog, E.
AU  - Bergström, L.
AU  - Hermann, Raphael
TI  - Spin disorder in maghemite nanoparticles investigated using polarized neutrons and nuclear resonant scattering
JO  - Journal of physics / Conference Series
VL  - 711
SN  - 1742-6596
CY  - Bristol
PB  - IOP Publ.
M1  - FZJ-2016-02666
SP  - 012002 -
PY  - 2016
AB  - The manuscript reports the investigation of spin disorder in maghemite nanoparticles of different shape by a combination of polarized small-angle neutron scattering (SANSPOL) and nuclear forward scattering (NFS) techniques. Both methods are sensitive to magnetization on the nanoscale. SANSPOL allows for investigation of the particle morphology and spatial magnetization distribution and NFS extends this nanoscale information to the atomic scale, namely the orientation of the hyperfine field experienced by the iron nuclei. The studied nanospheres and nanocubes with diameters of 7.4 nm and 10.6 nm, respectively, exhibit a significant spin disorder. This effect leads to a reduction of the magnetization to 44% and 58% of the theoretical maghemite bulk value, observed consistently by both techniques.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000376006000002
DO  - DOI:10.1088/1742-6596/711/1/012002
UR  - https://juser.fz-juelich.de/record/809739
ER  -