Two-dimensional chromium chalcogenides $\mathrm{C}{\mathrm{r}}_{1-\delta }\mathrm{Se}$ have garnered significant interest owing to their intrinsic magnetic orders. In this study, we present the molecular beam epitaxy growth of $\mathrm{C}{\mathrm{r}}_{0.68}\mathrm{Se}$ thin films on $\mathrm{SrTi}{\mathrm{O}}_3$(111) substrates through precise control of Cr/Se flux ratio. A semiconducting-to-metallic transition has been realized by annealing of the $\mathrm{C}{\mathrm{r}}_{0.68}\mathrm{Se}$ films, and the mechanism of the phase transition is elucidated by scanning tunneling microscopy. Magnetic measurements reveal that the metallic $\mathrm{C}{\mathrm{r}}_{0.68}\mathrm{Se}$ films exhibit spin-glass-like behavior and perpendicular magnetic anisotropy at low temperatures. We also observe the anomalous Hall effect in $\mathrm{C}{\mathrm{r}}_{0.68}\mathrm{Se}$ thin films, which possibly originates from the skew-scattering mechanism. Our findings not only provide valuable insights into the controversial magnetic and electrical properties of $\mathrm{C}{\mathrm{r}}_{1-\delta }\mathrm{Se}$, but also advance their potential applications for spintronic device.

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• Growth
• Magnetotransport
• Magnetic thin films
• Epitaxy
• Scanning tunneling microscopy