Abstract <p>Manganese ferrite (MnFe₂O₄) is a technologically important soft ferrimagnetic spinel oxide with high saturation magnetization for magnetic and electronic devices. In this work, manganese ferrite (MnFe₂O₄) nanoparticles were synthesised by the solution combustion synthesis method using glycine as a reducing agent and the corresponding metal nitrates as oxidizers. By adjusting the fuel-to-oxidizer ratio, phase-pure manganese ferrite with a porous microstructure was obtained. In fuel-lean mixtures, the formation of Mn₃O₄, α-Fe₂O₃, and non-stoichiometric ferrites (Mn_0.43Fe_1.57)FeO and Mn_0.202Fe_0.798O was observed, whereas fuel-rich mixtures yielded single-phase manganese ferrite. Considering the minimal residual carbon content in the synthesized material (0.06%), 7 mol of glycine was selected as the optimal amount for obtaining the target material. The influence of glycine content on the combustion parameters was also investigated. Under optimal conditions, the combustion temperature reached 510°C and the combustion velocity was 0.71 cm s^–1. Microstructural analysis revealed a porous, network-like structure with a uniform distribution of manganese ferrite nanoparticles of ferrimagnetic behaviour.</p>