skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

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

Patent ·
OSTI ID:1241337
; ; ; ; ; ; ; ; ; ;

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.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-00OR22725
Assignee:
UT-Battelle, LLC (Oak Ridge, TN)
Patent Number(s):
9,255,343
Application Number:
13/790,560
OSTI ID:
1241337
Resource Relation:
Patent File Date: 2013 Mar 08
Country of Publication:
United States
Language:
English

References (16)

Texturing of magnetic materials at high temperature by solidification in a magnetic field journal February 1991
Ferrous Polycrystalline Shape-Memory Alloy Showing Huge Superelasticity journal March 2010
The Influence of Static and Rotating Magnetic Fields on Heat and Mass Transfer in Silicon Floating Zones journal June 1999
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
The use of magnetic fields in semiconductor crystal growth journal August 1991
Method for preparing an oriented and textured magnetic material patent December 1992
Oxide superconducting material, process for preparing the same and applications thereof patent May 1996
Process and apparatus for preparing biaxially textured materials using anisotropy in the paramagnetic susceptibility patent June 1996
Silicon semiconductor substrate and method for production thereof patent July 2004
Thermal and high magnetic field treatment of materials and associated apparatus patent January 2007
Method for producing a single crystal patent September 2009
Ferromagnetic shape memory alloy and its use patent September 2011
Iron-based alloy having shape memory properties and superelasticity and its production method patent December 2011
Apparatus and method for magnetically processing a specimen patent September 2013
Method and device for converting heat into mechanical or electrical power patent-application July 2006

Similar Records

Magnetic Field Induced Phase Transitions in Gd5(Si1.95Ge2.05)Single Crystal and the Anisotropic Magnetocaloric Effect
Conference · Thu Sep 30 00:00:00 EDT 2004 · OSTI ID:1241337
+3 more
Anisotropic magnetic properties of light rare-earth diantimonides
Journal Article · Mon Jun 01 00:00:00 EDT 1998 · Physical Review, B: Condensed Matter · OSTI ID:1241337
+1 more
Studies of anisotropy of iron based superconductors
Thesis/Dissertation · Tue Jan 01 00:00:00 EST 2013 · OSTI ID:1241337

Related Subjects

36 MATERIALS SCIENCE
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS