28 June 2015 to 2 July 2015
JW Marriott Starr Pass Resort
Etc/GMT-7 timezone

Relationship between the Thermal Expansion and Spontaneous Magnetization in LaFe13-xAlx (1.2≤x≤1.8) Rare Earth Intermetallic Compounds

30 Jun 2015, 14:00
2h
Exhibit Hall (Arizona Ballroom) ()

Exhibit Hall (Arizona Ballroom)

Poster Presentation ICMC-11 - Metallic and Composite Materials M2PoD - Cryogenic Materials IV: Physical Properties

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)

Presentation Materials

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