Core-Shell Fine Structure of FeNi Magnetic Nanoparticles Produced by Electrical Explosion of Wire / Kurlyandskaya Galina V.,Madinabeitia Inaki,Murzakaev A. M.,Belen Sanchez-Ilarduya M.,Beketov V.,Medvedev A. I.,Larranaga Aitor,Safronov A. P.,Schegoleva N. N. // IEEE TRANSACTIONS ON MAGNETICS. - 2014. - V. 50, l. 11.

ISSN/EISSN:

0018-9464 / 1941-0069

Type:

Article; Proceedings Paper

Abstract:

Fe45Ni55 magnetic nanoparticles (MNPs) were fabricated by electric explosion of wire. In order to reduce the pyrophoricity of the MNPs, oxygen passivation was performed leading to the creation of the surface barrier layer. The surface features of MNPs are important for the development of MNPs containing composites (polymer/MNPs microwave absorbers or composites for power electronic devices). X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy and X-ray photoelectronic spectroscopy (XPS) were used for structural characterization. XPS analysis of the samples was conducted varying the electron exit angle with respect to the surface. The main phase is the FeNi fcc metallic core and the barrier layer is an iron-nickel NiFe2O4 oxide with a thickness of 2-6 nm. Small toroidal cores of 1.5 cm in diameter were prepared by hot pulse pressing. Their structure was studied by XRD, SEM-EDX techniques. The magnetic properties of the cores were measured using double coil winding. Obtained materials are interesting for power and electronic applications.

Author keywords:

Electric explosion of wire; hot magnetopulse pressing; magnetic composites; magnetic nanoparticles (MNPs); toroidal cores NANOPOWDERS

DOI:

10.1109/TMAG.2014.2325642

Web of Science ID:

ISI:000349465900166

Соавторы в МНС:

Другие поля

Поле	Значение
Month	NOV
Note	IEEE International Magnetics Conference (Intermag), Dresden, GERMANY, MAY 04-08, 2014
Organization	IEEE
Publisher	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Address	445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
Language	English
Article-Number	2900304
EISSN	1941-0069
Keywords-Plus	NANOPOWDERS
Research-Areas	Engineering; Physics
Web-of-Science-Categories	Engineering, Electrical \& Electronic; Physics, Applied
Author-Email	galina@we.lc.ehu.es
ORCID-Numbers	Kurlyandskaya, Galina/0000-0002-3712-1637
Funding-Acknowledgement	SAIOTEK-REMASEN, Universidad del Pais Vasco- Euskal Herriko Unibertsitatea; U.S. Civilian Research and Development Foundation (CRDF) through the U.S. Department of State {[}CRDF-UB RAS RUE2-7103-EK-13]
Funding-Text	This work was supported in part by the SAIOTEK-REMASEN, Universidad del Pais Vasco- Euskal Herriko Unibertsitatea, and in part by the U.S. Civilian Research and Development Foundation (CRDF) through the U.S. Department of State under Grant CRDF-UB RAS RUE2-7103-EK-13. Selected measurements were done in SGIKER Services. The authors would like to thank S. V. Zayatz. The opinions, findings and conclusions stated herein are those of the author(s) and do not necessarily reflect those of CRDF Global or the U.S. Department of State.
Number-of-Cited-References	11
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	31
Journal-ISO	IEEE Trans. Magn.
Doc-Delivery-Number	CB2NZ