Nanocomposites of Iron−Cobalt Alloy and Magnetite: Controllable Solvothermal Synthesis and Their Magnetic Properties

2009 ◽  
Vol 113 (46) ◽  
pp. 19875-19882 ◽  
Author(s):  
Qin Wang ◽  
Aibing Wu ◽  
Lianxiang Yu ◽  
Zhilong Liu ◽  
Wei Xu ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Solvothermal Synthesis ◽  
Cobalt Alloy ◽  
Iron Cobalt

Influence of Metal Content on Size, Dispersion, and Magnetic Properties of Iron−Cobalt Alloy Nanoparticles Embedded in Silica Matrix

2004 ◽  
Vol 16 (26) ◽  
pp. 5659-5663 ◽  
Author(s):  
Guido Ennas ◽  
Andrea Falqui ◽  
Sergio Marras ◽  
Claudio Sangregorio ◽  
Giaime Marongiu
Keyword(s):  
Magnetic Properties ◽  
Metal Content ◽  
Silica Matrix ◽  
Alloy Nanoparticles ◽  
Cobalt Alloy ◽  
Iron Cobalt ◽  
Size Dispersion

Magnetic properties of iron-cobalt alloy particles for magnetic recording media

1978 ◽  
Vol 14 (5) ◽  
pp. 852-854 ◽  
Author(s):  
T. Uehori ◽  
A. Hosaka ◽  
Y. Tokuoka ◽  
T. Izumi ◽  
Y. Imaoka
Keyword(s):  
Magnetic Properties ◽  
Magnetic Recording ◽  
Recording Media ◽  
Magnetic Recording Media ◽  
Cobalt Alloy ◽  
Iron Cobalt ◽  
Alloy Particles

Sonofragmentation Synthesis of Composition-Controlled Iron-Cobalt Nanoparticles with Enhanced Magnetic Properties

2021 ◽  
Vol 10 (1) ◽  
pp. 20210045
Author(s):  
Brajalal Sinha ◽  
Rubayet Tanveer ◽  
Palash Kumar Sarker ◽  
Md Nazrul Islam
Keyword(s):  
Magnetic Properties ◽  
Cobalt Nanoparticles ◽  
Iron Cobalt

scholarly journals Structural and Magnetic Properties of Co‒Mn Codoped ZnO Nanoparticles Obtained by Microwave Solvothermal Synthesis

Crystals ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 410 ◽  
Author(s):  
Jacek Wojnarowicz ◽  
Myroslava Omelchenko ◽  
Jacek Szczytko ◽  
Tadeusz Chudoba ◽  
Stanisław Gierlotka ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Crystallite Size ◽  
Doping Level ◽  
Solvothermal Synthesis ◽  
Zinc Acetate Dihydrate ◽  
Average Particle Size ◽  
Average Crystallite Size ◽  
Average Particle ◽  
Acetate Tetrahydrate ◽  
Preparation Methods

Zinc oxide nanoparticles codoped with Co2+ and Mn2+ ions (Zn(1−x−y)MnxCoyO NPs) were obtained for the first time by microwave solvothermal synthesis. The nominal content of Co2+ and Mn2+ in Zn(1−x−y)MnxCoyO NPs was x = y = 0, 1, 5, 10 and 15 mol % (the amount of both ions was equal). The precursors were obtained by dissolving zinc acetate dihydrate, manganese (II) acetate tetrahydrate and cobalt (II) acetate tetrahydrate in ethylene glycol. The morphology, phase purity, lattice parameters, dopants content, skeleton density, specific surface area, average particle size, average crystallite size, crystallite size distribution and magnetic properties of NPs were determined. The real content of dopants was up to 25.0% for Mn2+ and 80.5% for Co2+ of the nominal content. The colour of the samples changed from white to dark olive green in line with the increasing doping level. Uniform spherical NPs with wurtzite structure were obtained. The average size of NPs decreased from 29 nm to 21 nm in line with the increase in the dopant content. Brillouin type paramagnetism and an antiferromagnetic interaction between the magnetic ions was found for all samples, except for that with 15 mol % doping level, where a small ferromagnetic contribution was found. A review of the preparation methods of Co2+ and Mn2+ codoped ZnO is presented.

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