Neutron diffraction experiments of ${\mathrm{TmFeO}}_3$ single crystals were performed in the external magnetic fields. The field along the $c$ axis increases temperature of spin-reorientation transition $T_{\text{SR}}$ from phase $\mathrm{\Gamma }4$ to $\mathrm{\Gamma }2$. Application of the field along $b$ axis led to the decrease of $T_{\text{SR}}$ and to the formation of new phases. Based on the temperature and field dependence of the Bragg reflection intensity, the configuration of magnetically induced phases was proposed.

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• Magnetic phase transitions
• Perovskites
• Micromagnetic modeling
• Neutron diffraction
• X-ray diffraction