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Journal Article | FZJ-2019-00656 |
; ; ; ; ; ;
2018
Inst.
Woodbury, NY
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Please use a persistent id in citations: http://hdl.handle.net/2128/21370 doi:10.1103/PhysRevB.98.064407
Abstract: 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.
Keyword(s): Information and Communication (1st) ; Magnetism (2nd)
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