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Anomalous ferromagnetic behavior in the orthorhombic Li$_3$Co$_2$SbO$_6$ | | Qianhui Duan
; Huanpeng Bu
; Vladimir Pomjakushin
; Hubertus Luetkens
; Yuke Li
; Jinkui Zhao
; Jason S. Gardner
; Hanjie Guo
; | | Date: |
23 Jun 2022 | | Abstract: | Monoclinic Li$_3$Co$_2$SbO$_6$ has been proposed as a Kitaev spin liquid
candidate and investigated intensively, whereas the properties of its
polymorph, the orthorhombic phase, is less known. Here we report the magnetic
properties of the orthorhombic Li$_3$Co$_2$SbO$_6$ as revealed by dc and ac
magnetic susceptibility, muon spin relaxation ($mu$SR) and neutron diffraction
measurements. Successive magnetic transitions at (115, 89 and 71) K were
observed in the low field dc susceptibility measurements. The transitions below
$T_N$ (= 115 K), are suppressed in higher applied fields. However, zero field,
ac susceptibility measurements reveals distinct frequency independent
transitions at about (114, 107, 97, 79 and 71) K. A long range magnetic ordered
state was confirmed by specific heat, $mu$SR and neutron diffraction
measurements, all indicating a single transition at about 115 K. The
discrepancy between different measurements is attributed to possible stacking
faults and/or local disorders of the ferromagnetic zig-zag chains, resulting in
ferromagnetic boundaries within the overall antiferromagnetic matrix. | | Source: | arXiv, 2206.11466 | | Services: | Forum | Review | PDF | Favorites | |
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