Journal Article FZJ-2017-01587

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MnO nanoparticles as the cause of ferromagnetism in bulk dilute Mn-doped ZnO

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2016
American Inst. of Physics Melville, NY

Applied physics letters 109(25), 252405 - () [10.1063/1.4972956]

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Abstract: 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.

Keyword(s): Magnetic Materials (1st) ; Magnetism (2nd)

Classification:

Contributing Institute(s):
  1. JCNS-FRM-II (JCNS (München) ; Jülich Centre for Neutron Science JCNS (München) ; JCNS-FRM-II)
  2. Streumethoden (JCNS-2)
Research Program(s):
  1. 6G15 - FRM II / MLZ (POF3-6G15) (POF3-6G15)
  2. 6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623) (POF3-623)
Experiment(s):
  1. DNS: Diffuse scattering neutron time of flight spectrometer (NL6S)

Appears in the scientific report 2016
Database coverage:
Medline ; OpenAccess ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; NationallizenzNationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection
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Dokumenttypen > Aufsätze > Zeitschriftenaufsätze
Institutssammlungen > JCNS > JCNS-FRM-II
Institutssammlungen > JCNS > JCNS-2
Workflowsammlungen > Öffentliche Einträge
Publikationsdatenbank
Open Access

 Datensatz erzeugt am 2017-02-07, letzte Änderung am 2021-01-29


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