Facile Synthesis of Chromium-Doped Fe 1.1 Mn 1.9 O 4 Nanoparticles and the Effect of Cr Content on Their Magnetic and Structural Properties. - Spivakov, Aleksandr A.; Huang, Li-Huai; Chen, Ying-Zhen; Lin, Chun-Rong (Nanomaterials (2079-4991), 2023)