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Title: Magnetic order of Nd 5 Pb 3 single crystals

Abstract

We report millimeter-sized Nd 5Pb 3 single crystals grown out of a Nd–Co flux. We experimentally study the magnetic order of Nd 5Pb 3 single crystals by measuring the anisotropic magnetic properties, electrical resistivity under high pressure up to 8 GPa, specific heat, and neutron single crystal diffraction. Two successive magnetic orders are observed at T N1 = 44 K and T N2 = 8 K. The magnetic cells can be described with a propagation vector $k=(0.5, 0, 0)$ . Cooling below T N1, Nd1 and Nd3 order forming ferromagnetic stripes along the b-axis, and the ferromagnetic stripes are coupled antiferromagnetically along the a-axis for the $k=(0.5, 0, 0)$ magnetic domain. Cooling below T N2, Nd2 orders antiferromagnetically to nearby Nd3 ions. All ordered moments align along the crystallographic c-axis. The magnetic order at T N1 is accompanied by a quick drop of electrical resistivity upon cooling and a lambda-type anomaly in the temperature dependence of specific heat. At T N2, no anomaly was observed in electrical resistivity but there is a weak feature in specific heat. The resistivity measurements under hydrostatic pressures up to 8 GPa suggest a possible phase transition around 6 GPa. Our first-principles band structure calculationsmore » show that Nd 5Pb 3 has the same electronic structure as does Y 5Si 3 which has been reported to be a one-dimensional electride with anionic electrons that do not belong to any atom. Our study suggests that R 5Pb 3 (R = rare earth) can be a materials playground for the study of magnetic electrides. To conclude, this deserves further study after experimental confirmation of the presence of anionic electrons.« less

Authors:
ORCiD logo [1];  [2];  [3];  [4];  [5];  [6];  [7];  [8];  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science & Technology Division; Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engineering
  2. Osaka Univ. (Japan). Dept. of Physics
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Condensed Matter Division
  4. Univ. of Oklahoma, Norman, OK (United States). Stephenson Life Sciences Research Center and Dept. of Chemistry and Biochemistry
  5. Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Physics. Beijing National Lab. for Condensed Matter Physics (BNLCP-CAS)
  6. Univ. of Tokyo (Japan). The Inst. for Solid State Physics
  7. RIKEN Center for Emergent Matter Science, Saitama (Japan)
  8. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science & Technology Division
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Scientific User Facilities Division; National Science Foundation of China; National Basic Research Program of China; Chinese Academy of Sciences; Japan Society for the Promotion of Science (JSPS)
OSTI Identifier:
1427605
Grant/Contract Number:
AC05-00OR22725; 11574377; 2014CB921500; XDB07020100; QYZDB-SSW-SLH013; 15H03681
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Physics. Condensed Matter
Additional Journal Information:
Journal Volume: 30; Journal Issue: 13; Journal ID: ISSN 0953-8984
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Yan, Jiaqiang, Ochi, Masayuki, Cao, Huibo B., Saparov, Bayrammurad, Cheng, Jinguang, Uwatoko, Y., Arita, Ryotaro, Sales, Brian C., and Mandrus, David G. Magnetic order of Nd 5 Pb 3 single crystals. United States: N. p., 2018. Web. doi:10.1088/1361-648X/aaaf3e.
Yan, Jiaqiang, Ochi, Masayuki, Cao, Huibo B., Saparov, Bayrammurad, Cheng, Jinguang, Uwatoko, Y., Arita, Ryotaro, Sales, Brian C., & Mandrus, David G. Magnetic order of Nd 5 Pb 3 single crystals. United States. doi:10.1088/1361-648X/aaaf3e.
Yan, Jiaqiang, Ochi, Masayuki, Cao, Huibo B., Saparov, Bayrammurad, Cheng, Jinguang, Uwatoko, Y., Arita, Ryotaro, Sales, Brian C., and Mandrus, David G. Fri . "Magnetic order of Nd 5 Pb 3 single crystals". United States. doi:10.1088/1361-648X/aaaf3e.
@article{osti_1427605,
title = {Magnetic order of Nd 5 Pb 3 single crystals},
author = {Yan, Jiaqiang and Ochi, Masayuki and Cao, Huibo B. and Saparov, Bayrammurad and Cheng, Jinguang and Uwatoko, Y. and Arita, Ryotaro and Sales, Brian C. and Mandrus, David G.},
abstractNote = {We report millimeter-sized Nd5Pb3 single crystals grown out of a Nd–Co flux. We experimentally study the magnetic order of Nd5Pb3 single crystals by measuring the anisotropic magnetic properties, electrical resistivity under high pressure up to 8 GPa, specific heat, and neutron single crystal diffraction. Two successive magnetic orders are observed at T N1 = 44 K and T N2 = 8 K. The magnetic cells can be described with a propagation vector $k=(0.5, 0, 0)$ . Cooling below T N1, Nd1 and Nd3 order forming ferromagnetic stripes along the b-axis, and the ferromagnetic stripes are coupled antiferromagnetically along the a-axis for the $k=(0.5, 0, 0)$ magnetic domain. Cooling below T N2, Nd2 orders antiferromagnetically to nearby Nd3 ions. All ordered moments align along the crystallographic c-axis. The magnetic order at T N1 is accompanied by a quick drop of electrical resistivity upon cooling and a lambda-type anomaly in the temperature dependence of specific heat. At T N2, no anomaly was observed in electrical resistivity but there is a weak feature in specific heat. The resistivity measurements under hydrostatic pressures up to 8 GPa suggest a possible phase transition around 6 GPa. Our first-principles band structure calculations show that Nd5Pb3 has the same electronic structure as does Y5Si3 which has been reported to be a one-dimensional electride with anionic electrons that do not belong to any atom. Our study suggests that R 5Pb3 (R = rare earth) can be a materials playground for the study of magnetic electrides. To conclude, this deserves further study after experimental confirmation of the presence of anionic electrons.},
doi = {10.1088/1361-648X/aaaf3e},
journal = {Journal of Physics. Condensed Matter},
number = 13,
volume = 30,
place = {United States},
year = {Fri Mar 02 00:00:00 EST 2018},
month = {Fri Mar 02 00:00:00 EST 2018}
}

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