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Supplementary Information
Dispersible Cobalt Chromite Nanoparticles:
Facile
Synthesis and Size Driven Collapse of Magnetism
D. Zakutna1,2,*,†, I. Matulkova1, E. Kentzinger3, R. Medlin4, Y. Su5, K. Nemkovski5, S.
Disch6 , J. Vejpravova7, *,‡, D. Niznansky1,‡
1
Department of Inorganic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030/8,
12843 Prague 2, Czech Republic
2
Structural and System Diagnostics, Research Centre Rez s.r.o., Hlavní 130, 25068 Husinec - Rez, Czech
Republic
3
Jülich Center for Neutron Sciences JCNS and Peter Grünberg Institute PGI, JARA-FIT,
Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
4
New Technology Research Centre, University of West Bohemia, Univerzitní 8, 306 14 Pilsen
5
Jülich Center for Neutron Sciences JCNS at Heinz Maier-Leibnitz Zentrum MLZ, Forschungszentrum
Jülich GmbH, Lichtenbergstrasse 1, D-85747 Garching, München, Germany
6
Department Chemie, Universität zu Köln, Luxemburger Strasse 116, 50939 Köln, Germany
7
Department of Magnetic Nanosystems, Institute of Physics CAS, v.v.i., Na Slovance 2, 18221 Prague 8,
Czech Republic
Corresponding Authors
*[email protected], [email protected]
Present Addresses
†Department Chemie, Universität zu Köln, Luxemburger Strasse 116, 50939 Köln, Germany. Institut Laue-Langevin,
F-38042 Grenoble, France.
Author Contributions
‡These authors contributed equally.
30
20
30
25
25
S2
log = 0.124
20
20
Count
Count
40
S1
log = 0.132
Count
50
15
S3
log 0.164
15
10
10
10
5
5
0
0
2.5 3.0 3.5 4.0 4.5 5.0 5.5
d (nm)
0
2.0
2.5
3.0
d (nm)
3.5
2.0
2.5 3.0 3.5
d (nm)
4.0
Figure S1 The hystograms from TEM measurements with lognormal distribution.
Figure S2 Polarized neutron scattering with XYZ polarization analysis of S2 sample recorded at 5 K and 100 K. Separated
nuclear coherent, pure magnetic and nuclear spin-incoherent scattering contribution are shown. The position of reflections
-1
in range of 2.5 – 3.3 Å corresponds to bragg maxima from aluminium sample holder.