Magnetic and structural characterizations of Heusler Ni2FeGa nanoparticles. (11th November 2016)

• Record Type: Journal Article
• Authors: Xu, Yunli; Liu, Min; Huang, Xiufeng; Dai, Zhiwen; Qiu, Hongmei; Yu, Guanghua; Pan, Liqing
• Is Part Of: Materials research express. Volume 3:Number 11(2016)
• Publication Date: 2016-11-11
• Subjects: Heusler nanoparticles -- ferromagnetism -- chemical synthesis; Materials science -- Research -- Periodicals; Materials science -- Periodicals; 620.11
• DOI: 10.1088/2053-1591/3/11/115012
• Languages: English
• ISSNs: 2053-1591

Abstract

Abstract: This work describes the chemical preparation, structural characterization and magnetic properties of Heusler Ni2 FeGa nanoparticles. The nanoparticles were synthesized by reducing a methanol solution mixture of NiCl2 · 6H2 O, Fe(NO3 )3 · 9H2 O and Ga(NO3 ) · x H2 O, and using SBA-15 as template. The obtained nanoparticles were investigated by means of x-ray diffraction, transmission electron microscopy, and vibrating sample magnetometer. The structure of the prepared nanoparticles is Heusler L21 phase with a second γ phase, and the ratio of the two components could be adjusted by the concentration of SBA in the precursor solution. The prepared nanoscale Ni2 FeGa heusler alloys with a tensile strain of 0.56% present ferromagnetism at room-temperature and its Curie temperature exceeds 340 K.