title: Dependence of phase configurations, microstructures and magnetic properties of iron-nickel (Fe-Ni) alloy nanoribbons on deoxidization temperature in hydrogen.
abstract: Iron-nickel (Fe-Ni) alloy nanoribbons were reported for the first time by deoxidizing NiFe2O4nanoribbons, which were synthesized through a handy route of electrospinning followed by air-annealing at 450 °C, in hydrogen (H2) at different temperatures. It was demonstrated that the phase configurations, microstructures and magnetic properties of the as-deoxidized samples closely depended upon the deoxidization temperature. The spinel NiFe2O4ferrite of the precursor nanoribbons were firstly deoxidized into the body-centered cubic (bcc) Fe-Ni alloy and then transformed into the face-centered cubic (fcc) Fe-Ni alloy of the deoxidized samples with the temperature increasing. When the deoxidization temperature was in the range of 300 ~ 500 °C, although each sample possessed its respective morphology feature, all of them completely reserved the ribbon-like structures. When it was further increased to 600 °C, the nanoribbons were evolved completely into the fcc Fe-Ni alloy nanochains. Additionally, all samples exhibited typical ferromagnetism. The saturation magnetization (Ms) firstly increased, then decreased, and finally increased with increasing the deoxidization temperature, while the coercivity (Hc) decreased monotonously firstly and then basically stayed unchanged. The largest Ms(~145.7 emu·g-1) and the moderate Hc(~132 Oe) were obtained for the Fe-Ni alloy nanoribbons with a mixed configuration of bcc and fcc phases.
authors.affiliation: School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, People's Republic of China.
authors.forename: Panpan
authors.initials: P
authors.lastname: Jing
authors.affiliation: Key Laboratory of Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou, 730000, People's Republic of China.
authors.forename: Mengting
authors.initials: M
authors.lastname: Liu
authors.affiliation: School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, People's Republic of China.
authors.forename: Yongping
authors.initials: Y
authors.lastname: Pu
authors.affiliation: School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, People's Republic of China.
authors.forename: Yongfei
authors.initials: Y
authors.lastname: Cui
authors.affiliation: School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, People's Republic of China.
authors.forename: Zhuo
authors.initials: Z
authors.lastname: Wang
authors.affiliation: Key Laboratory of Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou, 730000, People's Republic of China.
authors.forename: Jianbo
authors.initials: J
authors.lastname: Wang
authors.affiliation: Key Laboratory of Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou, 730000, People's Republic of China.
authors.forename: Qingfang
authors.initials: Q
authors.lastname: Liu