Gd2Au2Cd: AMo2FeB2-type intermetallic with ferromagnetic ordering and spin glass anomalies

Abstract

The ternary intermetallic compound ${\mathrm{Gd}}_{2}{\mathrm{Au}}_{2}\mathrm{Cd}$, synthesized by reaction of the elements via inductive melting, is studied for its structural and physical properties. ${\mathrm{Gd}}_{2}{\mathrm{Au}}_{2}\mathrm{Cd}$ crystallizes with the ${\mathrm{Mo}}_{2}\mathrm{Fe}{\mathrm{B}}_{2}$ type (an ordered derivative of ${\mathrm{U}}_{3}{\mathrm{Si}}_{2}$ structure), space group $P4∕mbm$. The magnetic measurements (ac and dc susceptibility) establish magnetic ordering $({T}_{\mathrm{o}})$ at $110\phantom{\rule{0.3em}{0ex}}\mathrm{K}$ and have been confirmed by both transport (resistivity $\ensuremath{\rho}$;) and calorimetric (heat capacity, $C$) measurements. ac susceptibility measurements indicate ``spin-glass'' type anomalies below ${T}_{\mathrm{o}}$. The nature of magnetic ordering and the low-temperature behavior in this compound have been investigated in detail.