Journal Article

PreJuSER-13764

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Antiferromagnetic spin correlations in MnO nanoparticles

Chatterji, T.FZJ* ; Su, Y.FZJ* ; Iles, G. N. ; Lee, Y. C. ; Khandahar, A. ; Krishnan, K. M.

2010
North-Holland Publ. Co. Amsterdam

This record in other databases:    

Please use a persistent id in citations: doi:10.1016/j.jmmm.2010.06.019

Abstract: We have investigated nearly monodispersive MnO nanoparticles of 10 nm diameter by polarised neutron diffraction with XYZ-polarisation analysis. We found no long-range ordering down to 3.5 K. A broad magnetic peak appeared close to Q= (1/2,1/2,1/2) signifying short-range antiferromagnetic correlations. The correlation length was found to be about 2.4 nm at T=3.5 K. The correlation length decreases rapidly with increasing temperature and becomes about 0.7 nm at T=250 K. (C) 2010 Elsevier B.V. All rights reserved.

Keyword(s): J ; Antiferromagnetism (auto) ; Nanoparticles (auto) ; Neutron diffraction (auto)

Note: Record converted from VDB: 12.11.2012

---

Contributing Institute(s):

1. Streumethoden (IFF-4)
2. Neutronenstreuung (IFF-5)
3. JCNS (Jülich Centre for Neutron Science JCNS (JCNS) ; JCNS)

Research Program(s):

1. Großgeräte für die Forschung mit Photonen, Neutronen und Ionen (PNI) (P55)
2. BioSoft: Makromolekulare Systeme und biologische Informationsverarbeitung (P45)

Experiment(s):

1. DNS: Diffuse scattering neutron time of flight spectrometer (NL6S)

Appears in the scientific report 2010

---