Y<sup>3+</sup>掺杂对Ni-Cu-Zn铁氧体纳米颗粒结构和磁性能的影响

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Abstract The Ni_0.3Cu_0.2Zn_0.5Y_xFe_2-xO₄ (where x= 0, 0.025, 0.05, 0.075, 0.1) ferrite with Y³⁺ substituted partial Fe³⁺ was synthesized by sol-gel method at 950 ℃. The structure and magnetic properties of the sample were studied. It was found that a small amount of Y³⁺ doping does not destroy the crystal structure of Ni-Cu-Zn ferrite, but when the doping amount is more than 0.025, a small amount of YFeO₃ foreign phase is formed. As the doping amount increases, the lattice constant first decreases and then increases, and the grain size and saturation magnetization increase first and then decrease. Compared with pure Ni_0.3Cu_0.2Zn_0.5Fe₂O₄ ferrite, the coercivity, remanence, squareness ratio and Curie temperature of the doped samples increased, but all samples showed a paramagnetism. When the doping amount is 0.025, the saturation magnetization reaches 68.98 emu/g, and the Curie temperature increased to 215 ℃.

Key words： Ni-Cu-Zn ferrite doping Y³⁺ structural properties magnetic properties

Published: 05 July 2019

CLC number:

O469

About author:: Yingqiang Han is a graduate student in condensed matter physics at the School of Physics and Electronic Engineering, Northwest Normal University, focusing on the research of magnetic nanomaterials.Aimin Sun graduated from the Physics Department of Northwest Normal University in June 1985 and then taught at Northwest Normal University. He studied at Nanjing University from September 1993 to June 1998 and obtained his Ph.D. He is currently a professor, associate dean, master tutor of the School of Physics and Electronic Engineering of Northwest Normal University, and a government procurement expert of Gansu Pro-vince. He is mainly engaged in the research of superconducting and magnetic materials, and has published more than 60 research papers.

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	HAN Yingqiang
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	PAN Xiaoguang
	ZHANG Wei
	ZHAO Xiqian

Cite this article:

HAN Yingqiang,SUN Aimin,PAN Xiaoguang, et al. Doping Effect of Y³⁺ on Structure and Magnetic Properties of Ni-Cu-Zn Ferrite Nanoparticles[J]. Materials Reports, 2019, 33(z1): 343-347.

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http://www.mater-rep.com/EN/ OR http://www.mater-rep.com/EN/Y2019/V33/Iz1/343

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