Magnetisation, curie temperature and YK angle studies of Cu substituted and non substituted NiZn mixed ferrites

• Published in: Solid state communications Vol. 65; no. 12; pp. 1593 - 1595
• Main Authors: Joshi, G.K., Khot, A.Y., Sawant, S.R.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.03.1988; Elsevier
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Exact sciences and technology; Magnetic phase boundaries (including magnetic transitions, metamagnetism, etc.); Magnetic properties and materials; Magnetically ordered materials: other intrinsic properties; Physics; Ferrites; Transition metal Compounds; Chemical composition; Experimental study; Solid solution; Saturation magnetization; Inorganic compound; Copper Iron Nickel Zinc Oxides Mixed; Iron Nickel Zinc Oxides Mixed; Curie temperature; Magnetic transition
• ISSN: 0038-1098; 1879-2766
• DOI: 10.1016/0038-1098(88)90658-8

The compositional variation of saturization magnetization and Curie temperature for Ni 1− y− x Zn x Cu y Fe 2O 4 where x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0 for y = 0 and x = 0.0, 0.2, 0.4, 0.6, 0.8 for y = 0.2 have been reported. It is observed that Néel type of spins are favoured in NiFe 2O 4, Zn 0.2Ni 0.8Fe 2O 4, Ni 0.8Cu 0.2Fe 2O 4 and Zn 0.2Ni 0.6Cu 0.2Fe 2O 4. However, in the remaining samples non-collinear spin arrangement is favoured. This is concluded from the computation of YK angles for both the ferrite systems. The Curie temperatures have been evaluated by the technique described by Loria et al. The non-collinear arrangement is also evidenced by the compositional variation of Curie temperatures for both the systems. On addition of copper, the Curie temperatures and magnetization of the NiZn ferrite system are lowered which is attributed to lower magnetic moment for Cu +2.