TY  - JOUR
AU  - Zákutná, D.
AU  - Vlček, J.
AU  - Fitl, P.
AU  - Nemkovskiy, Kirill
AU  - Honecker, D.
AU  - Nižňanský, D.
AU  - Disch, S.
TI  - Noncollinear magnetism in nanosized cobalt chromite
JO  - Physical review / B
VL  - 98
IS  - 6
SN  - 2469-9950
CY  - Woodbury, NY
PB  - Inst.
M1  - FZJ-2019-00656
SP  - 064407
PY  - 2018
AB  - Using a combination of neutron diffraction with XYZ polarization analysis and magnetization measurements, the noncollinear magnetism in nanosized cobalt chromite, a potential multiferroic material, is revealed. For noninteracting 26.9(1) nm nanoparticles, a bulklike behavior is identified, including a ferrimagnetic Curie temperature of 99 K and a transition to the spin spiral magnetic phase at 27 K with a temperature-dependent, incommensurate propagation vector. A lock-in transition towards a commensurate propagation vector is not observed. Much smaller, 3.1(2) nm, nanoparticles reveal a strong cluster glass behavior, characterized by ferrimagnetic behavior below the Curie temperature of 43 K and a transition to asperomagnetic behavior at 18 K, with the absence of any magnetic reflections at a base temperature of 5 K.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000440820200006
DO  - DOI:10.1103/PhysRevB.98.064407
UR  - https://juser.fz-juelich.de/record/859834
ER  -