Abstract:
:We report the structural, magnetoelectric (ME), magnetic and electric control of magnetic properties in Co4Nb2O9 (CNO) single crystal. A detailed ME measurement reveals a nonlinear ME effect instead of a linear ME effect in CNO single crystal. By fitting the magnetization-electric field (M-E) curve, it can be found that the linear ([Formula: see text]) and quadratic (γ) coefficients equal to ~8.27 ps/m and ~-6.46 ps/MV for upper branch, as well as ~8.38 ps/m and ~6.75 ps/MV for the lower branch. More importantly, a pronounced response was observed under a small cooling magnetic field, which cannot even cause the spin flop. This suggests a magnetoelectric effect can occur at paraelectric state for CNO single crystal. Furthermore, we also found that the magnetization of every axis responds to electric field applied along a-axis, but fails to do so when the electric field is applied c-axis. Such findings supply a direct evidence to the magnetic structure and ME coupling mechanism indirectly reflected by our neutron experiment.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Cao Y,Deng G,Beran P,Feng Z,Kang B,Zhang J,Guiblin N,Dkhil B,Ren W,Cao Sdoi
10.1038/s41598-017-14169-3subject
Has Abstractpub_date
2017-10-26 00:00:00pages
14079issue
1issn
2045-2322pii
10.1038/s41598-017-14169-3journal_volume
7pub_type
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