We report the anisotropic magnetic properties of single-crystal CrSBr. Isothermal magnetization studies are performed to elucidate the magnetic and magnetocaloric properties. An important finding is a rapid shift in the peak of the magnetic entropy change; from approximately 132 K at 0.1 T to 170 K at 9 T across both in-plane crystallographic directions, $a$ and $b$ axes and132 K at 0.1 T to 159 K at 9 T along the out-of-plane hard $c$ axis. This rapid shifting with the increasing magnetic field signifies the intralayer ferromagnetic correlation above Neel temperature $(T_{\mathrm{N}}=132\mathrm{K})$. Moreover, the antiferromagnetic phase in the low magnetic field regime exhibits a first-order magnetic phase transition, and the field-induced ferromagnetic phase has a second-order magnetic phase transition. Additionally, the analysis of the relative cooling power (RCP) and full width at half maximum (FWHM) of the magnetic entropy change, along with the obtained critical exponents for the three orientations, suggests that the magnetic phase transition in CrSBr exhibits three-dimensional critical behavior. Magnetic-field-dependent polarized Raman spectroscopy confirms the strong spin-phonon coupling in this material.

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• Magnetic anisotropy
• Magnetic order
• Magnetic phase transitions
• Magnetism
• Antiferromagnets
• Ferromagnets
• Magnetic semiconductors
• Magnetization measurements
• Raman spectroscopy