TY  - JOUR
AU  - Lançon, Diane
AU  - Nilsen, Gøran J.
AU  - Wildes, Andrew R.
AU  - Nemkovski, Kirill
AU  - Huang, Ping
AU  - Fejes, Dóra
AU  - Rønnow, Henrik M.
AU  - Magrez, Arnaud
TI  - MnO nanoparticles as the cause of ferromagnetism in bulk dilute Mn-doped ZnO
JO  - Applied physics letters
VL  - 109
IS  - 25
SN  - 1077-3118
CY  - Melville, NY
PB  - American Inst. of Physics
M1  - FZJ-2017-01587
SP  - 252405 -
PY  - 2016
AB  - We show that the observed ferromagnetic behavior of ZnO lightly doped with Mn coincides with the presence of MnO nanoparticles, whereas cluster-free Mn doped ZnO behaves paramagnetically. This conclusion is reached by a study of the structural and magnetic properties of powdered samples of (Mnx,Zn1–x)O with x ≤ 0.033 using polarized neutron scattering. Two types of samples were synthesized via, respectively, a solid state method and the decomposition of hydrozincite. Further characterization has been performed using standard X-ray diffraction and magnetization measurements. The results show evidence for the formation of MnO nanoparticles in the highest doped samples for both synthesis methods, with a ferromagnetic behavior attributed to uncompensated Mn2+ in the MnO nanoparticles. The lower Mn-doped samples showed no evidence for structural segregation or magnetic correlations and showed only a paramagnetic behaviour.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000391857200017
DO  - DOI:10.1063/1.4972956
UR  - https://juser.fz-juelich.de/record/827462
ER  -