Control of Coercivity and Magnetic Anisotropy Through Cobalt Substitution in Ni-Zn Ferrite

被引：6
作者：
Chintala, J. N. Pavan Kumar [1 ,2 ]
Varma, M. Chaitanya [1 ]
Choudary, G. S. V. R. K. [3 ]
Rao, K. H. [4 ]
机构：
[1] GITAM Deemed Univ, Dept Phys, Inst Sci, Visakhapatnam 530045, Andhra Pradesh, India
[2] Sir CR Reddy Coll PG Courses Autonomous & Aided, Dept Phys, Eluru 534002, Andhra Pradesh, India
[3] Bhavans Vivekananda Coll Sci Humanities & Commerc, Dept Phys & Elect, Secunderabad 500094, Telangana, India
[4] Andhra Univ, Dept Phys, Visakhapatnam 530003, Andhra Pradesh, India
来源：
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM | 2021年 / 34卷 / 09期
关键词：
Ni-Zn ferrite; Sol-gel method; Magnetic anisotropy; Coercivity; RELAXATION; SIZE; MICROSTRUCTURE; SUSCEPTIBILITY; PERMEABILITY; TEMPERATURE; NANOFERRITE; PERFORMANCE; PARAMETERS; DEPENDENCE;
D O I：
10.1007/s10948-021-05965-0
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The present study aims to develop low magnetic anisotropy Ni-Zn nanoferrites with cobalt substitution. The results enable the development of nanoferrite samples with superior magnetic properties suitable for high-frequency core applications through an understanding of the influence of cobalt in the manipulation of the magnetic anisotropy of the nanoferrite. Ni0.65-xZn0.35CoxFe2O4 (x varies from 0.00 to 0.24 in steps of 0.04) particles were synthesized by sol-gel method using polyvinyl alcohol as a chelating agent. X-ray diffraction patterns of all the samples showed sharp peaks corresponding to spinel structure with no extra phases. Transmission electron micrographs depict uniform size distribution of particles in the range 185 to 247 nm. Magnetic properties were measured at 300 K and 5 K. Excellent control to reduce the magnetic anisotropy to a negligible amount can be achieved by incorporating minute amounts of cobalt in nickel-zinc ferrite.
引用
收藏
页码：2357 / 2370
页数：14
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