RE 4 T Al ( RE = Y, Sm, Gd–Tm, Lu; T = Pd, Pt) – Synthesis and magnetism of new aluminum representatives with the Gd 4 RhIn type structure

Reentrant spin-glass and transport behavior of Gd4PtAl, a compound with three sites for Gd

“…In fact, the authors of Ref. 9 have reported that Gd4PtAl orders antiferromagnetically (TN= ~64K), despite the fact the sign of paramagnetic Curie temperature (θp= ~54 K)) is positive, as though ferromagnetic and antiferromagnetic interactions compete; in support of this, a careful look at the isothermal magnetization (M) at 3 K, shown in figure 7 of Ref. 9, shows a metamagnetic anomaly for a small application of H, indicating instability of antiferromagnetism.…”

“…9 have reported that Gd4PtAl orders antiferromagnetically (TN= ~64K), despite the fact the sign of paramagnetic Curie temperature (θp= ~54 K)) is positive, as though ferromagnetic and antiferromagnetic interactions compete; in support of this, a careful look at the isothermal magnetization (M) at 3 K, shown in figure 7 of Ref. 9, shows a metamagnetic anomaly for a small application of H, indicating instability of antiferromagnetism. The Ho analogue ordering ferromagnetically below ~24 K indeed exhibits one of the characteristics of spin-glasses, that is, a bifurcation of zero-field-cooled (ZFC) and field-cooled (FC) susceptibility (χ) curves below about 20 K [9], It is therefore worthwhile to study this family in detail.…”

“…9, shows a metamagnetic anomaly for a small application of H, indicating instability of antiferromagnetism. The Ho analogue ordering ferromagnetically below ~24 K indeed exhibits one of the characteristics of spin-glasses, that is, a bifurcation of zero-field-cooled (ZFC) and field-cooled (FC) susceptibility (χ) curves below about 20 K [9], It is therefore worthwhile to study this family in detail. With this motivation, we have undertaken an exhaustive study of magnetic and transport behavior on the compound, Gd4PtAl.…”

“…However, for X=Al, only TM=Ru, Rh and Ir based compounds have been known [6]. This prompted Engelbert and Janka [9] to attempt to synthesize materials containing TM= Pd and Pt, and they succeeded in this effort. These authors also reported initial magnetic measurements on some of these compounds, reporting only one magnetic transition temperature for each of these compounds.…”

Exploration of D022-Type Al3TM(TM = Sc, Ti, V, Zr, Nb, Hf, Ta): Elastic Anisotropy, Electronic Structures, Work Function and Experimental Design

“…With the increasing demand of aerospace and automotive industry for structural material properties, aluminum rich compounds containing transition metal (TM, i.e., Sc, Ti, V, Y, Zr, Nb, La, Hf, Ta) elements have attracted extensive attention [ 1 , 2 , 3 ]. Among them, trialuminides (Al 3 TM) are the most potential candidate compounds, mainly because it can meet a variety of advantages, such as a high melting point, good thermal conductivity, low temperature damage resistance, strong creep resistance, and high specific strength.…”