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 -