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We implement the molecular beam epitaxy method to embed theblack-phosphorus-like bismuth nanosheets into the bulk ferromagnetCr$_2$Te$_3$. As a typical surfactant, bismuth lowers the surface tensions andmediates the layer-by-layer growth of Cr$_2$Te$_3$. Meanwhile, the bismuthatoms precipitate into black-phosphorus-like nanosheets with the lateral sizeof several tens of nanometers. In Cr$_2$Te$_3$ embedded with Bi-nanosheets, weobserve simultaneously a large topological Hall effect together with themagnetic susceptibility plateau and magnetoresistivity anomaly. As a controlexperiment, none of these signals is observed in the pristine Cr$_2$Te$_3$samples. Therefore, the Bi-nanosheets serve as seeds of topological Hall effectinduced by non-coplanar magnetic textures planted into Cr$_2$Te$_3$. Ourexperiments demonstrate a new method to generates a large topological Halleffect by planting strong spin-orbit couplings into the traditionalferromagnet, which may have potential applications in spintronics.

Topological Hall effect in bulk ferromagnet Cr$_2$Te$_3$ embedded with black-phosphorus-like bismuth nanosheets