Impact of Rare Earth Gd 3+ Ions on Structural and Magnetic Properties of Ni 0.5 Zn 0.5 Fe 2−x Gd x O 4 Spinel Ferrite: Useful for Advanced Spintronic Technologies
作者： Ashwini Kumar , Jingdong Shen , Wenbo Yang , Huihui Zhao , Poorva Sharma
DOI: 10.1007/S10948-017-4273-4
关键词: X-ray crystallography 、 Analytical chemistry 、 Infrared spectroscopy 、 Ferrite (magnet) 、 Raman spectroscopy 、 Ferrimagnetism 、 Spinel 、 Dielectric 、 Nuclear magnetic resonance 、 Doping 、 Materials science
摘要: In this article, we have synthesized the Gd3+-doped Ni0.5Zn0.5Fe2−x Gd x O4 (x = 0.05, 0.07, 1.0) ferrite samples using solid-state reaction route. The effects of Gd3+ doping on structural, vibrational, electrical and magnetic properties were studied. Structural vibrational characterized by x-ray diffraction (XRD), Raman, FTIR spectroscopy. XRD data indicate that ceramics crystallize in single-phase spinel cubic (Fd3m space group) structure. Infrared spectra show two strong absorption bands frequency range 400–600 cm−1 which were, respectively, attributed to tetrahedral octahedral sites ferrite. All prepared typical dielectric dispersion having Maxwell–Wagner-type interfacial polarization. Decrease constant loss tangent has been observed with concentration. M − H plots reveal all exhibit ferrimagnetic nature at room temperature. A significant increase saturation magnetization upon substitution ions. as-prepared are isotropic soft materials. These compounds advantageous advanced high-density storage high-frequency devices applications.
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