TY - JOUR
T1 - Low temperature magnetic properties of Nd2Ru2O7
AU - Ku, S. T.
AU - Kumar, D.
AU - Lees, M. R.
AU - Lee, W. T.
AU - Aldus, R.
AU - Studer, A.
AU - Imperia, P.
AU - Asai, S.
AU - Masuda, T.
AU - Chen, S. W.
AU - Chen, J. M.
AU - Chang, L. J.
N1 - Funding Information:
1 Department of Physics, National Cheng Kung University, Tainan 70101, Taiwan 2 Department of Physics, University of Warwick, Coventry CV4 7AL, United Kingdom 3 Australian Nuclear Science and Technology Organization, Locked Bag 2001, Kirrawee DC, NSW 2232, Australia 4 Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan 5 National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan 6 Advanced Science Research Center, Japan Atomic Energy Agency (JAEA), Tokai, Naka, Ibaraki 319-1195, Japan
Funding Information:
We thank the Ministry of Science and Technology, Taiwan, who supported the work via the grants: MOST 104-2221-M-006-010-MY3, MOST 104-2119-M-006-017-MY3. We thank J S Gardner for fruitful discussions.
Publisher Copyright:
© 2018 IOP Publishing Ltd.
PY - 2018/3/19
Y1 - 2018/3/19
N2 - We present magnetic susceptibility, heat capacity, and neutron diffraction measurements of polycrystalline Nd2Ru2O7 down to 0.4 K. Three anomalies in the magnetic susceptibility measurements at 146, 21 and 1.8 K are associated with an antiferromagnetic ordering of the Ru4+ moments, a weak ferromagnetic signal attributed to a canting of the Ru4+ and Nd3+ moments, and a long-range-ordering of the Nd3+ moments, respectively. The long-range order of the Nd3+ moments was observed in all the measurements, indicating that the ground state of the compound is not a spin glass. The magnetic entropy of Rln2 accumulated up to 5 K, suggests the Nd3+ has a doublet ground state. Lattice distortions accompany the transitions, as revealed by neutron diffraction measurements, and in agreement with earlier synchrotron x-ray studies. The magnetic moment of the Nd3+ ion at 0.4 K is estimated to be 1.54(2)μ B and the magnetic structure is all-in all-out as determined by our neutron diffraction measurements.
AB - We present magnetic susceptibility, heat capacity, and neutron diffraction measurements of polycrystalline Nd2Ru2O7 down to 0.4 K. Three anomalies in the magnetic susceptibility measurements at 146, 21 and 1.8 K are associated with an antiferromagnetic ordering of the Ru4+ moments, a weak ferromagnetic signal attributed to a canting of the Ru4+ and Nd3+ moments, and a long-range-ordering of the Nd3+ moments, respectively. The long-range order of the Nd3+ moments was observed in all the measurements, indicating that the ground state of the compound is not a spin glass. The magnetic entropy of Rln2 accumulated up to 5 K, suggests the Nd3+ has a doublet ground state. Lattice distortions accompany the transitions, as revealed by neutron diffraction measurements, and in agreement with earlier synchrotron x-ray studies. The magnetic moment of the Nd3+ ion at 0.4 K is estimated to be 1.54(2)μ B and the magnetic structure is all-in all-out as determined by our neutron diffraction measurements.
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U2 - 10.1088/1361-648X/aab398
DO - 10.1088/1361-648X/aab398
M3 - Article
C2 - 29498360
AN - SCOPUS:85044819246
SN - 0953-8984
VL - 30
JO - Journal of Physics Condensed Matter
JF - Journal of Physics Condensed Matter
IS - 15
M1 - 155601
ER -