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Title: 2Flux growth and characterization of Ce-substituted Nd 2 Fe 14 B single crystals

Abstract

Single crystals of (Nd1-xCex)2Fe14B are grown out of Fe-(Nd,Ce) flux. Chemical and structural analysis of the crystals indicate that (Nd1-xCex)2Fe14B forms a solid solution until at least x = 0.38 with a Vegard-like variation of the lattice constants with x. Refinements of single crystal neutron diffraction data indicate that Ce has a slight site preference (7:3) for the 4g rare earth site over the 4f site. Magnetization measurements at 300 K show only small decreases with increasing Ce content in saturation magnetization (Ms) and anisotropy field (HA), and Curie temperature (TC). First principles calculations are carried out to understand the effect of Ce substitution on the electronic and magnetic properties. For a multitude of applications, it is expected that the advantage of incorporating lower-cost and more abundant Ce will outweigh the small adverse effects on magnetic properties. In conclusion, Ce-substituted Nd2Fe14B is therefore a potential high-performance permanent magnet material with substantially reduced Nd content.

Authors:
 [1];  [1];  [2];  [1];  [3];  [1];  [4];  [1];  [1];  [4];  [1]
+ Show Author Affiliations
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science & Technology Division
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science & Technology Division; Duke Univ., Durham, NC (United States). Dept. of Mechanical Engineering and Materials Science and the Dept. of Chemistry
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Condensed Matter Division
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS); Ames Lab., Ames, IA (United States). Critical Materials Institute (CMI)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Advanced Manufacturing Office; USDOE Office of Science (SC), Basic Energy Sciences (BES); Work for Others (WFO)
OSTI Identifier:
1349597
Alternate Identifier(s):
OSTI ID: 1414475
Grant/Contract Number:  
AC05-00OR22725; AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Magnetism and Magnetic Materials
Additional Journal Information:
Journal Volume: 434; Journal Issue: C; Journal ID: ISSN 0304-8853
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Permanent magnets; Nd2Fe14B; Rare earth magnets; Single crystal synthesis; Neutron diffraction

Citation Formats

Susner, Michael A., Conner, Benjamin S., Saparov, Bayrammurad I., McGuire, Michael A., Crumlin, Ethan J., Veith, Gabriel M., Cao, Huibo, Shanavas, Kavungal V., Parker, David S., Chakoumakos, Bryan C., and Sales, Brian C. 2Flux growth and characterization of Ce-substituted Nd2Fe14B single crystals. United States: N. p., 2016. Web. doi:10.1016/j.jmmm.2016.10.127.
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Susner, Michael A., Conner, Benjamin S., Saparov, Bayrammurad I., McGuire, Michael A., Crumlin, Ethan J., Veith, Gabriel M., Cao, Huibo, Shanavas, Kavungal V., Parker, David S., Chakoumakos, Bryan C., & Sales, Brian C. 2Flux growth and characterization of Ce-substituted Nd2Fe14B single crystals. United States. https://doi.org/10.1016/j.jmmm.2016.10.127
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Susner, Michael A., Conner, Benjamin S., Saparov, Bayrammurad I., McGuire, Michael A., Crumlin, Ethan J., Veith, Gabriel M., Cao, Huibo, Shanavas, Kavungal V., Parker, David S., Chakoumakos, Bryan C., and Sales, Brian C. Thu . "2Flux growth and characterization of Ce-substituted Nd2Fe14B single crystals". United States. https://doi.org/10.1016/j.jmmm.2016.10.127. https://www.osti.gov/servlets/purl/1349597.
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@article{osti_1349597,
title = {2Flux growth and characterization of Ce-substituted Nd2Fe14B single crystals},
author = {Susner, Michael A. and Conner, Benjamin S. and Saparov, Bayrammurad I. and McGuire, Michael A. and Crumlin, Ethan J. and Veith, Gabriel M. and Cao, Huibo and Shanavas, Kavungal V. and Parker, David S. and Chakoumakos, Bryan C. and Sales, Brian C.},
abstractNote = {Single crystals of (Nd1-xCex)2Fe14B are grown out of Fe-(Nd,Ce) flux. Chemical and structural analysis of the crystals indicate that (Nd1-xCex)2Fe14B forms a solid solution until at least x = 0.38 with a Vegard-like variation of the lattice constants with x. Refinements of single crystal neutron diffraction data indicate that Ce has a slight site preference (7:3) for the 4g rare earth site over the 4f site. Magnetization measurements at 300 K show only small decreases with increasing Ce content in saturation magnetization (Ms) and anisotropy field (HA), and Curie temperature (TC). First principles calculations are carried out to understand the effect of Ce substitution on the electronic and magnetic properties. For a multitude of applications, it is expected that the advantage of incorporating lower-cost and more abundant Ce will outweigh the small adverse effects on magnetic properties. In conclusion, Ce-substituted Nd2Fe14B is therefore a potential high-performance permanent magnet material with substantially reduced Nd content.},
doi = {10.1016/j.jmmm.2016.10.127},
journal = {Journal of Magnetism and Magnetic Materials},
number = C,
volume = 434,
place = {United States},
year = {Thu Oct 27 00:00:00 EDT 2016},
month = {Thu Oct 27 00:00:00 EDT 2016}
}
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https://doi.org/10.1016/j.jmmm.2016.10.127
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    Works referencing / citing this record:

    Magnetic hardening of Nd-Ce-Fe-B films with high Ce concentration
    journal, August 2018

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