title: Structural and magnetic properties of iron nanowires and iron nanoparticles fabricated through a reduction reaction.
abstract: The main goal of this work is to study the structural and magnetic properties of iron nanowires and iron nanoparticles, which have been fabricated in almost the same processes. The only difference in the synthesis is an application of an external magnetic field in order to form the iron nanowires. Both nanomaterials have been examined by means of transmission electron microscopy, energy dispersive X-ray spectrometry, X-ray diffractometry and Mössbauer spectrometry to determine their structures. Structural investigations confirm that obtained iron nanowires as well as nanoparticles reveal core-shell structures and they are composed of crystalline iron cores that are covered by amorphous or highly defected phases of iron and iron oxides. Magnetic properties have been measured using a vibrating sample magnetometer. The obtained values of coercivity, remanent magnetization, saturation magnetization as well as Curie temperature differ for both studied nanostructures. Higher values of magnetizations are observed for iron nanowires. At the same time, coercivity and Curie temperature are higher for iron nanoparticles.
authors.affiliation: University of Warsaw, Faculty of Physics, Institute of Experimental Physics, Pasteura St. 5, 02-093 Warsaw, Poland.
authors.forename: Marcin
authors.initials: M
authors.lastname: Krajewski
authors.affiliation: Tatung University, Department of Materials Engineering, DeHui St. 104, Taipei, Taiwan, R.O.C.
authors.forename: Wei Syuan
authors.initials: WS
authors.lastname: Lin
authors.affiliation: Tatung University, Department of Materials Engineering, DeHui St. 104, Taipei, Taiwan, R.O.C.
authors.forename: Hong Ming
authors.initials: HM
authors.lastname: Lin
authors.affiliation: University of Technology and Humanities in Radom, Faculty of Mechanical Engineering, Department of Physics, Krasickiego St. 54, 26-600 Radom, Poland.
authors.forename: Katarzyna
authors.initials: K
authors.lastname: Brzozka
authors.affiliation: Polish Academy of Sciences, Institute of Physics, Al. Lotnikow 32/46, 02-668 Warsaw, Poland.
authors.forename: Sabina
authors.initials: S
authors.lastname: Lewinska
authors.affiliation: Polish Academy of Sciences, Institute of Physics, Al. Lotnikow 32/46, 02-668 Warsaw, Poland.
authors.forename: Natalia
authors.initials: N
authors.lastname: Nedelko
authors.affiliation: Polish Academy of Sciences, Institute of Physics, Al. Lotnikow 32/46, 02-668 Warsaw, Poland.
authors.forename: Anna
authors.initials: A
authors.lastname: Slawska-Waniewska
authors.affiliation: University of Warsaw, Faculty of Physics, Institute of Experimental Physics, Pasteura St. 5, 02-093 Warsaw, Poland ; Polish Academy of Sciences, Institute of Physics, Al. Lotnikow 32/46, 02-668 Warsaw, Poland.
authors.forename: Jolanta
authors.initials: J
authors.lastname: Borysiuk
authors.affiliation: University of Warsaw, Faculty of Physics, Institute of Experimental Physics, Pasteura St. 5, 02-093 Warsaw, Poland.
authors.forename: Dariusz
authors.initials: D
authors.lastname: Wasik
keywords: iron nanoparticles; iron nanostructures; iron nanowires; magnetic properties; structural properties