2015/10/13 by Hu Zhang, Hu, Zhang, Shen Bao-Gen +1
Engineering · Materials Science · #FOS: Physical sciences #Intermetallics and Advanced Alloy Properties #Magnetic and transport properties of perovskites and related materials #Materials Science (cond-mat.mtrl-sci) #Shape Memory Alloy Transformations
paper · pdf · doi:10.48550/arxiv.1510.03503
openalex publication_date 2015/10/13 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
The ternary intermetallic RTX compounds (R = rare earth, T = transitional metal, X = p-block metal) have been investigated extensively in the past few decades due to their interesting physical properties. Recently, much attention has been paid to the magnetocaloric effect (MCE) of these RTX compounds, especially the ones with heavy rare-earth, for their potential application in low temperature magnetic refrigeration. In this paper, we review the MCE of RTSi and RTAl systems with R = Gd~Tm, T = Fe~Cu and Pd, which are widely investigated in recent years. It is found that these RTX compounds exhibit various crystal structures and magnetic properties, which then result in different MCE. Large MCE has been observed not only in the typical ferromagnetic materials but also in the antiferromagnetic materials. The magnetic properties have been studied in detail to discuss the physical mechanism of large MCE in RTX compounds. Particularly, some RTX compounds, such as ErFeSi, HoCuSi, HoCuAl, etc, exhibit large reversible MCE under low magnetic field change, which suggests that these compounds could be promising materials for magnetic refrigeration in low temperature range.