NDLI: Preparation and Magnetic Properties of Nd–Co-Substituted M-Type Strontium Ferrite by Microwave-Assisted Synthesis Method

Content Provider	Springer Nature Link
Author	Zhou, Zhipeng Wang, Zhanyong Wang, Xiuting Li, Qiang Jin, Minglin Xu, Jiayue
Copyright Year	2015
Abstract	M-strontium hexaferrites (Sr$_{1−x}$Nd$_{ x }$Fe$_{ y }$Co$_{1−y}$ O$_{19}$) with the substitution of Co$^{2+}$ and Nd$^{3+}$ were prepared by the microwave-assisted solid-phase reaction process. M-strontium hexaferrite with magnetoplumbite structure can be formed at 950 °C for 90 min by applying microwave-assisted calcination. For Co$^{2+}$-substituted M-strontium ferrites, the saturation magnetization (σ $_{s}$) and remanent magnetization (σ $_{r}$) tend to decrease with the increasing calcination temperature, accompanying by the improvement of coercivity for the enhancement of morphology anisotropy. For Nd–Co-co-substituted strontium ferrites, the appearance of α-Fe$_{2}$O$_{3}$ phase and the conversion of Fe$^{3+}$(5 μB) into Fe$^{2+}$ (4 μB) decrease the net magnetic moment, resulting in the dilution of the σ $_{s}$ and σ $_{r}$. The coercivity of Nd–Co-co-substituted strontium ferrite increases slightly for the improvement of magnetocrystalline anisotropy, which could be attributed to the enhancement of anisotropy field for the substitution of Fe$^{3+}$ ions by Co$^{2+}$ ions and the formation of grains with plate-like shape.
Starting Page	1773
Ending Page	1778
Page Count	6
File Format	PDF
ISSN	15571939
Journal	Journal of Superconductivity and Novel Magnetism
Volume Number	28
Issue Number	6
e-ISSN	15571947
Language	English
Publisher	Springer US
Publisher Date	2015-01-10
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Microwave-assisted calcination M-strontium hexaferrites Substitution Magnetization Strongly Correlated Systems, Superconductivity Magnetism, Magnetic Materials Condensed Matter Physics Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Condensed Matter Physics

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