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  • Iron-based composition for magnetocaloric effect (MCE) applications and method of making a single crystal

Title: Iron-based composition for magnetocaloric effect (MCE) applications and method of making a single crystal

A method of making a single crystal comprises heating a material comprising magnetic anisotropy to a temperature T sufficient to form a melt of the material. A magnetic field of at least about 1 Tesla is applied to the melt at the temperature T, where a magnetic free energy difference .DELTA.G.sub.m between different crystallographic axes is greater than a thermal energy kT. While applying the magnetic field, the melt is cooled at a rate of about 30.degree. C./min or higher, and the melt solidifies to form a single crystal of the material.
Inventors:
; ; ; ; ; ; ; ; ; ;
Issue Date:
OSTI Identifier:
1241337
Assignee:
UT-Battelle, LLC (Oak Ridge, TN) ORNL
Patent Number(s):
9,255,343
Application Number:
13/790,560
Contract Number:
AC05-00OR22725
Resource Relation:
Patent File Date: 2013 Mar 08
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
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Works referenced in this record:

Using magnetic field gradients to control the directional solidification of alloys and the growth of single crystals
journal, September 2004
Magnetocaloric effect in FeCr soft magnetic nanocrystalline alloys
journal, September 2007
  • Gómez-Polo, C.; Socolovsky, L. M.; Denardin, J. C.
  • Journal of Magnetism and Magnetic Materials, Vol. 316, Issue 2, p. e876-e878
  • DOI: 10.1016/j.jmmm.2007.03.127
The use of magnetic fields in semiconductor crystal growth
journal, August 1991

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