Method of making active magnetic refrigerant materials based on Gd-Si-Ge alloys
Abstract
An alloy made of heat treated material represented by Gd.sub.5(Si.sub.xGe.sub.1-x).sub.4 where 0.47.ltoreq.x.ltoreq.0.56 that exhibits a magnetic entropy change (-.DELTA.S.sub.m) of at least 16 J/kg K, a magnetostriction of at least 2000 parts per million, and a magnetoresistance of at least 5 percent at a temperature of about 300K and below, and method of heat treating the material between 800 to 1600 degrees C. for a time to this end.
- Inventors:
-
- Ames, IA
- (Ames, IA)
- Issue Date:
- Research Org.:
- Ames Laboratory (AMES), Ames, IA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1007930
- Patent Number(s):
- 7114340
- Application Number:
- 10/413,417
- Assignee:
- Iowa State University Research Foundation, Inc. (Ames, IA)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS
F - MECHANICAL ENGINEERING F25 - REFRIGERATION OR COOLING F25B - REFRIGERATION MACHINES, PLANTS OR SYSTEMS
- DOE Contract Number:
- W-7405-ENG-82
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Pecharsky, Alexandra O, Gschneidner, Jr., Karl A., and Pecharsky, Vitalij K. Method of making active magnetic refrigerant materials based on Gd-Si-Ge alloys. United States: N. p., 2006.
Web.
Pecharsky, Alexandra O, Gschneidner, Jr., Karl A., & Pecharsky, Vitalij K. Method of making active magnetic refrigerant materials based on Gd-Si-Ge alloys. United States.
Pecharsky, Alexandra O, Gschneidner, Jr., Karl A., and Pecharsky, Vitalij K. Tue .
"Method of making active magnetic refrigerant materials based on Gd-Si-Ge alloys". United States. https://www.osti.gov/servlets/purl/1007930.
@article{osti_1007930,
title = {Method of making active magnetic refrigerant materials based on Gd-Si-Ge alloys},
author = {Pecharsky, Alexandra O and Gschneidner, Jr., Karl A. and Pecharsky, Vitalij K},
abstractNote = {An alloy made of heat treated material represented by Gd.sub.5(Si.sub.xGe.sub.1-x).sub.4 where 0.47.ltoreq.x.ltoreq.0.56 that exhibits a magnetic entropy change (-.DELTA.S.sub.m) of at least 16 J/kg K, a magnetostriction of at least 2000 parts per million, and a magnetoresistance of at least 5 percent at a temperature of about 300K and below, and method of heat treating the material between 800 to 1600 degrees C. for a time to this end.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2006},
month = {10}
}
Works referenced in this record:
Giant magnetoresistance in the Ge-rich magnetocaloric compound, Gd5(Si0.1Ge0.9)4
journal, December 2001
- Morellon, L.; Algarabel, P. A.; Magen, C.
- Journal of Magnetism and Magnetic Materials, Vol. 237, Issue 2
Giant Magnetocaloric Effect in
journal, June 1997
- Pecharsky, V. K.; Gschneidner, Jr., K. A.
- Physical Review Letters, Vol. 78, Issue 23, p. 4494-4497
Magnetic-field-induced structural phase transition in
journal, December 1998
- Morellon, L.; Algarabel, P. A.; Ibarra, M. R.
- Physical Review B, Vol. 58, Issue 22
Uncovering the structure–property relationships in R5(SixGe4−x) intermetallic phases
journal, October 2002
- Pecharsky, Vitalij K.; Pecharsky, A. O.; Gschneidner, K. A.
- Journal of Alloys and Compounds, Vol. 344, Issue 1-2
The effect of varying the crystal structure on the magnetism, electronic structure and thermodynamics in the Gd 5 (Si x Ge 1−x ) 4 system near x =0.5
journal, February 2003
- Pecharsky, V. K.; Samolyuk, G. D.; Antropov, V. P.
- Journal of Solid State Chemistry, Vol. 171, Issue 1-2
Phase relationships and crystallography in the pseudobinary system Gd5Si4Gd5Ge4
journal, September 1997
- Pecharsky, V. K.; Gschneidner, K. A.
- Journal of Alloys and Compounds, Vol. 260, Issue 1-2
Magnetic refrigeration materials (invited)
journal, April 1999
- Gschneidner, K. A.; Pecharsky, V. K.
- Journal of Applied Physics, Vol. 85, Issue 8
Giant magnetoresistance near the magnetostructural transition in Gd5(Si1.8Ge2.2)
journal, December 1998
- Morellon, L.; Stankiewicz, J.; Garcı́a-Landa, B.
- Applied Physics Letters, Vol. 73, Issue 23
Transformations in the alloy induced by the temperature and magnetic-field cycling through the first-order magnetic-martensitic phase transition
journal, January 2001
- Levin, E. M.; Pecharsky, A. O.; Pecharsky, V. K.
- Physical Review B, Vol. 63, Issue 6
Effect of alloying on the giant magnetocaloric effect of Gd5(Si2Ge2)
journal, March 1997
- Pecharsky, V. K.; Gschneidner, K. A.
- Journal of Magnetism and Magnetic Materials, Vol. 167, Issue 3
Chapter 51 Phase equilibria in ternary and higher order systems with rare earth elements and silicon
book, January 1984
- Rogl, Peter
- Handbook on the Physics and Chemistry of Rare Earths
Hall effect in
journal, May 2000
- Stankiewicz, J.; Morellon, L.; Algarabel, P. A.
- Physical Review B, Vol. 61, Issue 19
Tunable magnetic regenerator alloys with a giant magnetocaloric effect for magnetic refrigeration from ∼20 to ∼290 K
journal, June 1997
- Pecharsky, V. K.; Gschneidner, K. A.
- Applied Physics Letters, Vol. 70, Issue 24
Magnetic-field and temperature dependencies of the electrical resistance near the magnetic and crystallographic first-order phase transition of
journal, September 1999
- Levin, E. M.; Pecharsky, V. K.; Gschneidner, K. A.
- Physical Review B, Vol. 60, Issue 11
The solubility of tantalum in eight liquid rare-earth metals
journal, February 1966
- Dennison, D. H.; Tschetter, M. J.; Gschneidner, K. A.
- Journal of the Less Common Metals, Vol. 10, Issue 2
Nature of the first-order antiferromagnetic-ferromagnetic transition in the Ge-rich magnetocaloric compounds
journal, July 2000
- Morellon, L.; Blasco, J.; Algarabel, P. A.
- Physical Review B, Vol. 62, Issue 2