Speaker
Mr
Rongjin Huang
(Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, P.R. China)
Description
The Fe-based NaZn13-type compounds LaFe13-xMx (M=Si, Al) have attracted considerable attention because of their intriguing properties, such as magnetocaloric effect and abnormal thermal expansion. These unusual properties are of fundamental interest and have potential technical applications in cryogenic engineering when related materials operate in low temperature environment. The thermal expansion coefficient and spontaneous magnetization of rare earth intermetallic compounds LaFe13-xAlx (1.2≤x≤1.8) have been investigated and relationships between them were considered. Results indicate that LaFe11.6Al1.4 and LaFe11.4Al1.6 show near zero thermal expansion behavior from room temperature to liquid helium temperature. And it has been found that the spontaneous magnetostriction is proportional to the square of the spontaneous magnetization, which proves that the thermal expansion has a close relation with the spontaneous magnetization.
Primary author
Mr
Rongjin Huang
(Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, P.R. China)
Co-authors
Mr
Laifeng Li
(Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, P.R. China)
Mr
Shaopeng Li
(Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, P.R. China)
Mr
Wei Wang
(Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, P.R. China)
Ms
Wen Li
(Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, P.R. China)
Mr
Yuqiang Zhao
(Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, P.R. China)
