%0 Journal Article
%A Lançon, Diane
%A Nilsen, Gøran J.
%A Wildes, Andrew R.
%A Nemkovski, Kirill
%A Huang, Ping
%A Fejes, Dóra
%A Rønnow, Henrik M.
%A Magrez, Arnaud
%T MnO nanoparticles as the cause of ferromagnetism in bulk dilute Mn-doped ZnO
%J Applied physics letters
%V 109
%N 25
%@ 1077-3118
%C Melville, NY
%I American Inst. of Physics
%M FZJ-2017-01587
%P 252405 -
%D 2016
%X 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.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000391857200017
%R 10.1063/1.4972956
%U https://juser.fz-juelich.de/record/827462