Atypical ferrimagnetism in Ni4Nb2O9RemoveJhuma Sannigrahi, Roumita Roy, Richard Waite, Anupam Banerjee, Mohamad Numan, Manh Duc Le, D. T. Adroja, Sudipta Kanungo, and Subham MajumdarPhys. Rev. B 112, 214413 (2025)