Comments on the paper on the properties of NiFe2O4:Gd ceramics by V. Bhuvaneshwari, N. Lenin et al., and published in Materials Science and Engineering B 288 (2023) 116184

My comments concern the significant errors in the crystallographic part of the commented paper. The diffraction patterns are erroneously analysed. The studied sample contain two phases what can influence on the final results of experiments.