Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Growth and Characterization of Ce- Substituted Nd2Fe1411B Single Crystals

Program Document ·
OSTI ID:1398481
 [1];  [1];  [1];  [1];  [2];  [2];  [3];  [1];  [1];  [3];  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Condensed Matter Division
+ Show Author Affiliations
Single crystals of (Nd1-xCex)2Fe14B are grown out of Fe-(Nd,Ce) flux. Chemical and structural analysis of the crystals indicates 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. Furthermore, magnetization measurements show that for x = 0.38 the saturation magnetization at 400 K, a temperature important to applications, falls from 29.8 for the parent Nd2Fe14B to 27.6 μB/f.u., the anisotropy field decreases from 5.5 T to 4.7 T, and the Curie temperature decreases from 586 to 543 K. First principles calculations carried out within density functional theory are used to explain the decrease in magnetic properties due to Ce substitution. Although the presence of the lower-cost and more abundant Ce slightly affects these important magnetic characteristics, this decrease is not large enough to affect a multitude of applications. Ce-substituted Nd2Fe14B is therefore a potential high-performance permanent magnet material with substantially reduced Nd content.
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
DOE Contract Number:
AC02-05CH11231
OSTI ID:
1398481
Report Number(s):
arXiv:1508.07792; ark:/13030/qt2rs129dc
Country of Publication:
United States
Language:
English

Similar Records

2Flux growth and characterization of Ce-substituted Nd2Fe14B single crystals [Growth and Characterization of Ce- Substituted Nd2Fe1411B Single Crystals]
Journal Article · Sat Jul 01 00:00:00 EDT 2017 · Journal of Magnetism and Magnetic Materials · OSTI ID:1379909
2Flux growth and characterization of Ce-substituted Nd2Fe14B single crystals
Journal Article · Wed Oct 26 20:00:00 EDT 2016 · Journal of Magnetism and Magnetic Materials · OSTI ID:1349597
Solid-solution stability and preferential site-occupancy in (R-R′){sub 2}Fe{sub 14}B compounds
Journal Article · Mon Jun 13 00:00:00 EDT 2016 · Applied Physics Letters · OSTI ID:22590796

Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY