Effect of annealing on the magnetic entropy change of CoMnSb alloy

✍ Scribed by Shandong Li; Zuanru Yuan; LiYa Lü; Meimei Liu; Zhigao Huang; Fengming Zhang; Youwei Du

• Publisher: Elsevier Science
• Year: 2006
• Tongue: English
• Weight: 245 KB
• Volume: 428
• Category: Article
• ISSN: 0921-5093
• DOI: 10.1016/j.msea.2006.05.041

✦ Synopsis

Effect of annealing on the magnetocaloric effect (MCE) of half-Heusler CoMnSb alloy has been investigated in a low magnetic field by comparing two samples. They were annealed at a lower temperature of 873 K and a higher temperature of 1323 K, referred as samples A and B, respectively. The maximum value of magnetic entropy change of 2.1 J/(kg K) for the sample A is larger than that of 1.0 J/(kg K) for the sample B. However, a wider working temperature span and a larger refrigerant capacity were obtained in the sample B, indicating that the sample annealed at a higher temperature is superior to the one annealed at a lower temperature in practical application as a refrigeration material.