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

Journal Article · · Journal of Magnetism and Magnetic Materials
 [1];  [1];  [2];  [1];  [3];  [1];  [4];  [1];  [1];  [4];  [1]
  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

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.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS); Ames Lab., Ames, IA (United States). Critical Materials Institute (CMI)
Sponsoring Organization:
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)
Grant/Contract Number:
AC05-00OR22725; AC02-05CH11231
OSTI ID:
1349597
Alternate ID(s):
OSTI ID: 1414475
Journal Information:
Journal of Magnetism and Magnetic Materials, Vol. 434, Issue C; ISSN 0304-8853
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 29 works
Citation information provided by
Web of Science

References (37)

Permanent magnet materials based on the rare earth-iron-boron tetragonal compounds journal September 1984
Pr‐Fe and Nd‐Fe‐based materials: A new class of high‐performance permanent magnets (invited) journal March 1984
Cerium: An Unlikely Replacement of Dysprosium in High Performance Nd-Fe-B Permanent Magnets journal March 2015
Relationships between crystal structure and magnetic properties in Nd 2 Fe 14 B journal April 1984
The structure of a new magnetic phase related to the sigma phase: iron neodymium boride Nd2Fe14B journal October 1984
R 2 Fe 14 B materials: Intrinsic properties and technological aspects journal October 1991
Magnetic anisotropies and spin reorientations of R 2 Fe 1 4 B‐type compounds journal November 1986
Site-preference and valency for rare-earth sites in (R-Ce) 2 Fe 14 B magnets journal January 2013
High-temperature solution growth of intermetallic single crystals and quasicrystals journal May 2001
Magnetic domains of single-crystal Nd2Fe14B imaged by unmodified scanning electron microscopy journal June 1998
A short history of SHELX journal December 2007
Four-circle single-crystal neutron diffractometer at the High Flux Isotope Reactor journal May 2011
Recent advances in magnetic structure determination by neutron powder diffraction journal October 1993
Using “Tender” X-ray Ambient Pressure X-Ray Photoelectron Spectroscopy as A Direct Probe of Solid-Liquid Interface journal May 2015
Generalized Gradient Approximation Made Simple journal October 1996
Projector augmented-wave method journal December 1994
Ab initiomolecular dynamics for liquid metals journal January 1993
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
Magnetic properties of compounds R 2 Fe 1 4 B journal April 1985
Preferential site occupation and magnetic structure of Nd 2 (Co x Fe 1 x ) 1 4 B systems journal December 1986
Experimental and theoretical studies on site preference of Ti in Nd2(Fe,Ti)14B journal April 2015
Magnetism of ordered and disordered alloys of R2Fe14B (R=Nd, Er) type journal December 2013
Accounting for unknown systematic errors in Rietveld refinements: a Bayesian statistics approach journal July 2015
Crystal and magnetic structure of Pr 2 Fe 1 4 B and Dy 2 Fe 1 4 B journal March 1985
Magnetism in Fe-based intermetallics: relationships between local environments and local magnetic moments journal March 1994
Complex alloy structures regarded as sphere packings. II. Analysis and classification of representative structures journal July 1959
Complex alloy structures regarded as sphere packings. I. Definitions and basic principles journal March 1958
Neutron‐diffraction study of the insertion scheme of hydrogen in Nd 2 Fe 14 B journal August 1995
Magnetic properties of bulk, and rapidly solidified nanostructured (Nd1-xCex)2Fe14-yCoyB ribbons journal January 2016
Magnetic properties of rare‐earth‐iron‐boron permanent magnet materials journal April 1985
Crystal-field analysis of the magnetization process in a series of Nd 2 Fe 14 B-type compounds journal July 1988
Comparative studies of electronic and magnetic structures in Y 2 Fe 14 B, Nd 2 Fe 14 B, Y 2 Co 14 B, and Nd 2 Co 14 B journal December 1987
Electronic structure and magnetism of R 2 Fe 14 B ( R =Y,Nd) compounds journal May 1990
Electronic and magnetic structures of the rare-earth permanent magnet Nd 2 Fe 14 B journal September 1993
The partitioning of La and Y in Nd–Fe–B magnets: A first-principles study journal February 2013
The Fe substitution in (M=Si, Ge and Sn): A first-principles study journal April 2014
High-performance permanent magnets journal November 2000

Cited By (2)

Single-Crystal Permanent Magnets: Extraordinary Magnetic Behavior in the Ta -, Cu -, and Fe -Substituted Ce Co 5 Systems journal January 2019
Magnetic hardening of Nd-Ce-Fe-B films with high Ce concentration journal August 2018