Synthesis and Magnetic Behavior of Nickel Zinc Ferrite Nanoparticles Coated Onto Carbon Microcoils

• Published in: IEEE transactions on magnetics Vol. 49; no. 8; pp. 4824 - 4826
• Main Authors: Shima, Mutsuhiro, Oguri, Kazuo, Ohya, Yutaka, Gomi, Manabu, Ikuhara, Yumi H., Sasaki, Yusuke, Hishikawa, Yukio, Kawabe, Kenji
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.08.2013; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Assemblies; Assembly; Carbon; Coatings; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Ferrite; Ferrites; magnetic particles; Magnetic properties; Magnetism; Magnetization; Materials science; Microbiology; nanocomposites; Nanoparticles; Nickel; Other topics in materials science; Physics; Scanning electron microscopy; self-assembly; X-ray diffraction; Zinc; Coils; Nanoparticles; self-assembly; Ferrite; Composite materials; Magnetic powder; Synthesis; Nanocomposites; ferrites; Carbon; magnetic particles; Magnetic properties
• ISSN: 0018-9464; 1941-0069
• DOI: 10.1109/TMAG.2013.2243461

Magnetic nanoparticles consisted of nickel zinc ferrite (NZF) were chemically synthesized by co-precipitation and simultaneously coated onto carbon microcoils (CMC), and their structure and magnetic properties were investigated. The samples were prepared at various mass ratios of CMC : NZF ranging from 1 : 5 to 5 : 1. According to X-ray diffraction (XRD) measurements, all the samples synthesized in this study exhibit peaks associated with the spinel ferrite structure of NZF nanoparticles along with a fairly broad peak due to the amorphous structure of CMC. The sample synthesized at CMC: NZF = 1 : 1 gives the highest crystallinity and the largest magnetization at 300 K for NZF according to XRD and magnetization measurement using a superconducting quantum interference device magnetometer. Microstructural analysis of the CMC-NZF assemblies using scanning electron microscopy shows that the use of oleic acid and oleylamine improves the coverage of NZF on CMC and that the assembly made at CMC: NZF = 2 : 1 yields the highest coverage of NZF nanoparticles onto the CMC surface.