The magnetization, electrical transport, and magnetostriction properties of ${\mathrm{Gd}}_2{\mathrm{PdGe}}_6$ single crystals have been investigated under both static and pulsed magnetic field up to 50 T. ${\mathrm{Gd}}_2{\mathrm{PdGe}}_6$ is a collinear antiferromagnetic compound with moments along the $b$ axis. At the Néel temperature $(T_{\mathrm{N}}\approx 37\mathrm{K}), {\mathrm{Gd}}_2{\mathrm{PdGe}}_6$ undergoes a paramagnetic-to-antiferromagnetic phase transition. For $H//b$ and $T=2\mathrm{K}$, a field-induced spin-flop transition is observed at $\approx 3.5\mathrm{T}$, which leads to the canted antiferromagnetic phase. As the magnetic field increases to $\approx 33\mathrm{T}$, the spin is almost completely polarized along the applied magnetic field. The field-induced transition reflects the intrinsically weak magnetic anisotropy of the $\mathrm{G}{\mathrm{d}}^{3+}$ ions, attributed to their nearly spherical $4f$ electron cloud. On the other hand, the transition field observed both in magnetoresistance and magnetostriction measurements is in good agreement with that in magnetization measurements, which indicates the spin-charge-lattice coupling in this system is strong. Based on the temperature and magnetic field dependence of all the measurements, the evolution of the magnetic configuration and complete magnetic phase diagram of ${\mathrm{Gd}}_2{\mathrm{PdGe}}_6$ have been constructed.

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• High magnetic fields
• Magnetic anisotropy
• Magnetostriction
• Antiferromagnets
• Intermetallic compounds
• Rare-earth magnetic materials
• Magnetization measurements
• Resistivity measurements