Electron–nuclear interactions and spin reorientation in HoFeO3

Electron–nuclear interactions and spin-reorientation in HoFeO3 have been studied by the method of nuclear magnetic resonance (NMR) of 57Fe nuclei. It is found that the magnetic equivalence of Fe3+ ions is violated in the temperature range 53–62 K due to spin-reorientation phase transitions Γ4 → Γ2. The obtained experimental results are compared with the data from other works.