Sol–gel autocombustion synthesis and characterization of Fe1−x Co x alloys with large saturation magnetization
Source abstract
Abstract
Fe1−x Co x alloys were synthesized by sol–gel autocombustion method. The atomic ratios of Fe:Co were easily controlled by adjusting the relative concentration of Fe3+ and Co2+ in the preparation of the precursor gels. Their phases and compositions were confirmed by X-ray diffraction and energy-dispersive X-ray spectroscopy analysis. Morphology characterization revealed the porous structure with micron-size pores. Synthetic mechanism was studied by thermogravimetry and differential scanning calorimetry. Magnetic properties of the alloys were investigated at room temperature. The highest saturation magnetization was found to be about 231 emu/g, which is much larger than that of the corresponding alloys synthesized through other chemical methods. SEM images and magnetic hysteresis loop of Fe0.7Co0.3 alloy synthesized by sol–gel autocombustion method.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Magnetic properties of thin films · Metallic Glasses and Amorphous Alloys · Nanoporous metals and alloys
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (17)
Show source-provided references
1. Rong C, Zhang Y, Poudyal N, Xiong X, Kramer MJ, Liu JP (2010) Fabrication of bulk nanocomposite magnets via severe plastic deformation and warm compaction. Appl Phys Lett 96:102513-1–102513-310.1063/1.3358390 ↗
2. Seo WS, Lee JH, Sun X, Suzukl Y, Mann D, Liu Z, Terashima M, Yang P, Mcconnell MV, Nishimura DG, Dai H (2006) FeCo/graphitic-shell nanocrystals as advanced magnetic-resonance-imaging and near-infrared agents. Nat Mater 5:971–97610.1038/nmat1775 ↗
3. Hutten A, Sudfeld D, Ennen I, Reiss G, Wojczykowski K, Jutzi PJ (2005) Ferromagnetic FeCo nanoparticles for biotechnology. Magn Magn Mater 293:93–10110.1016/j.jmmm.2005.01.048 ↗
4. Chaubey GS, Barcena C, Poudyal N, Rong C, Gao J, Sun S, Liu JP (2007) Synthesis and stabilization of FeCo nanoparticles. J Am Chem Soc 129:7214–721510.1021/ja0708969 ↗
5. Kim JN, Kim JB, Kim JR, Kim KH (2013) Characterization of as-synthesized FeCo magnetic nanoparticles by coprecipitation method. J Appl Phys 113:17A313-1–17A313-3
6. Yan Q, Li S, Pang E, Wang Y (2014) Fabrication of hollow spheres FeCo alloy through a hydrothermal reduction method. Mater Lett 120:185–18810.1016/j.matlet.2014.01.084 ↗
7. Zamanpour M, Chen Y, Hu B, Carroll K, Huba ZJ, Carpenter EE, Lewis LH, Harris VG (2012) Large-scale synthesis of high moment FeCo nanoparticles using modified polyol synthesis. J Appl Phys 111:07B528-1–07B528-310.1063/1.3677773 ↗
8. Bouali HL, Bentayeb FZ, Louidi S, Guo X, Tria S, Sunol JJ, Escoda L (2013) X-ray line profile analysis of the ball-milled Fe–30Co alloy. Adv Powder Technol 24:168–17410.1016/j.apt.2012.04.007 ↗
9. Sirvent P, Berganza E, Aragon AM, Bollero A, Moure A, Garcia-Hernandez M, Marin P, Fernandez JF, Quesada A (2014) Effective high-energy ball milling in air of Fe65Co35 alloys. J Appl Phys 115:17B505-1–17B505-310.1063/1.4862220 ↗
10. Shin SJ, Kim YH, Kim CW, Cha HG, Kim YJ, Kang YS (2007) Preparation of magnetic FeCo nanoparticles by coprecipitation route. Curr Appl Phys 7:404–40810.1016/j.cap.2006.09.012 ↗
11. Nguyen Q, Chinnasamy CN, Yoon SD, Sivasubramanian S, Sakai T, Baraskar A, Mukerjee S, Vittoria C, Harris VG (2010) Functionalization of FeCo alloy nanoparticles with highly dielectric amorphous oxide coatings. J Appl Phys 22:587–603
12. Poudyal N, Chaubey GS, Rong C, Cui J, Liu JP (2013) Synthesis of monodisperse FeCo nanoparticles by reductive salt-matrix annealing. Nanotechnology 24:345605-1–345605-610.1088/0957-4484/24/34/345605 ↗
13. Jiang YW, Yang SG, Hua ZH, Huang HB (2009) Sol–gel autocombustion synthesis of metals and metal alloys. Angew Chem Int Ed 48:8529–853110.1002/anie.200903444 ↗
14. Hua ZH, Deng Y, Li KN, Yang SG (2012) Low-density nanoporous iron foams synthesized by sol–gel autocombustion. Nanoscale Res Lett 7:1–710.1186/1556-276X-7-1 ↗
15. Deshpande K, Mukasyan A, Varma A (2004) Direct synthesis of iron oxide nanopowders by the combustion approach: reaction mechanism and properties. Chem Mater 16:4896–490410.1021/cm040061m ↗
16. Denton AR, Ashcroft NW (1991) Vegard’s law. Phys Rev A 43:3161–316410.1103/PhysRevA.43.3161 ↗
17. Chikazumi S (1964) Physics of magnetism. Wiley, New York, pp 72–77