TY - JOUR
T1 - Trimer-based spin liquid candidate B a4NbI r3 O12
AU - Nguyen, Loi T.
AU - Cava, R. J.
N1 - Funding Information:
This work was supported as part of the Institute for Quantum Matter, an Energy Frontier Research Center funded by the US Department of Energy, Office of Science, Office of Basic Energy Sciences under Award No. DE-SC0019331. The authors thank Tai Kong for discussion on the analysis of the magnetic susceptibilities.
Publisher Copyright:
© 2019 American Physical Society.
PY - 2019/1/23
Y1 - 2019/1/23
N2 - Ba4NbIr3O12, a material with a triangular planar geometry of Ir3O12 trimers, is described. Magnetic susceptibility measurements show it to be paramagnetic with no magnetic ordering down to 1.8 K despite the Curie-Weiss temperature (θCW) of -13 K. The material has a very low effective magnetic moment (μeff) of 0.80 μB/f.u. To look at the lower-temperature behavior, the specific heat (Cp) was measured down to 0.35 K; it shows no indication of magnetic ordering and fitting a power law to Cp vs T below 2 K yields the power α=3/4. Comparison to the trimer compound made with the 4d element Rh in place of the 5d element Ir, Ba4NbRh3O12, which is also paramagnetic (μeff=1.48μB/f.u., θCW=-23K), is presented. The analysis suggests that Ba4NbIr3O12 is a candidate spin liquid material.
AB - Ba4NbIr3O12, a material with a triangular planar geometry of Ir3O12 trimers, is described. Magnetic susceptibility measurements show it to be paramagnetic with no magnetic ordering down to 1.8 K despite the Curie-Weiss temperature (θCW) of -13 K. The material has a very low effective magnetic moment (μeff) of 0.80 μB/f.u. To look at the lower-temperature behavior, the specific heat (Cp) was measured down to 0.35 K; it shows no indication of magnetic ordering and fitting a power law to Cp vs T below 2 K yields the power α=3/4. Comparison to the trimer compound made with the 4d element Rh in place of the 5d element Ir, Ba4NbRh3O12, which is also paramagnetic (μeff=1.48μB/f.u., θCW=-23K), is presented. The analysis suggests that Ba4NbIr3O12 is a candidate spin liquid material.
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U2 - 10.1103/PhysRevMaterials.3.014412
DO - 10.1103/PhysRevMaterials.3.014412
M3 - Article
AN - SCOPUS:85060622493
SN - 2475-9953
VL - 3
JO - Physical Review Materials
JF - Physical Review Materials
IS - 1
M1 - 014412
ER -