Unraveling the structural and magnetic characteristics of Mg doped CoCr2O4

被引:1
|
作者
Garima
Dhaka, Saroj [2 ]
Singh, Vidyadhar [3 ]
Thakur, Anmol [3 ]
Choudhary, B. L. [1 ]
Kumar, Sushant [4 ]
Mund, H. S. [3 ]
机构
[1] Banasthali Vidyapith, Dept Phys, Banasthali 304022, Rajasthan, India
[2] Banasthali Vidyapith, Dept Chem, Banasthali 304022, Rajasthan, India
[3] Jai Prakash Univ, Dept Phys, Chapra 841301, Bihar, India
[4] Indian Inst Technol, Dept Chem & Biochem Engn, Patna 801103, Bihar, India
关键词
Spinel Oxides; Sol-gel; X-ray diffraction; XPS; Magnetic materials;
D O I
10.1016/j.matlet.2024.137550
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
In this paper, we explore the structural and magnetic properties of Mg doped CoCr2O4 nanopowder (typical size of 10 nm) synthesized via the sol-gel auto-combustion method. X-ray diffraction, XPS, and FTIR spectra confirm spinel structure (space group Fd-3 m) with Mg2+ doped at Cr3+. Interestingly, temperature-dependent magnetizations show various magnetic transitions between 5-300 K. While they show ferrimagnetic ordering below Curie temperature of 100 K (CoCr2O4) to 80 K (CoCr1.8Mg0.2O4) samples, the irreversibility between FC and ZFC curves at blocking temperature attribute to spin blocking nature of nanoparticles. Finally, at very low temperatures (13-26 K), magnetizations again rise indicating spin-spiral transition of CoCr1.8Mg0.2O4. Furthermore, the effect of these transitions on M-H loop can be evident in terms of coercivity, saturation magnetization, and nonsaturation behavior at high magnetic fields.
引用
收藏
页数:4
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