High-energy ball-milling for the synthesis of Ag–B superconducting materials

Ahn, Jung-Ho; Oh, Sangjun

doi:10.1016/j.jallcom.2010.03.033

Cited by 7 publications

(2 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This method, however, has several disadvantages, such as the nonuniform distribution of starting materials, significant impurity content and long processing time; the synthesis of a high-quality superconductor oxide needs to overcome all these barriers. Therefore, several alternative methods have been proposed to obtain an improved superconducting powder with a stoichiometric composition, including the utilization of recently introduced equipment and wet-processing techniques [2][3][4]. The use of planetary milling and attrition milling under dry conditions results in high-quality superconducting oxide powders [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Bi1.6Pb0.4Sr2Ca2Cu3O7 Superconducting Oxide by High-Energy Milling

Darsono

Imaduddin

Raju

et al. 2015

J Supercond Nov Magn

View full text Add to dashboard Cite

Superconducting Bi 1.6 Pb 0.4 Sr 2 Ca 2 Cu 3 O 7 was prepared by a solid-state reaction using high-energy milling for the starting materials. The effects of the sintering temperature and time on the phase evolution, microstructure, and superconducting properties were examined by thermogravimetric analysis, X-ray diffraction, scanning electron microscopy, and four-point probe resistivity measurements. High-energy milling decreased the precursor particle size to approximately 30 nm with a relatively uniform distribution of multi-compositions. Because of the mechanochemical activation for the starting materials, the reaction temperature was decreased to 750 • C due to the decreased diffusion length required for the solid-state reaction. Bi 1.6 Pb 0.4 Sr 2 Ca 2 Cu 3 O 7 prepared by high-energy milling showed good superconducting properties with T c ∼ 100 K, which is superior to the same material prepared by ball milling and sol-gel routes.

show abstract

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Bi1.6Pb0.4Sr2Ca2Cu3O7 Superconducting Oxide by High-Energy Milling

Darsono

Imaduddin

Raju

et al. 2015

J Supercond Nov Magn

View full text Add to dashboard Cite

show abstract

“…In order to overcome the disadvantage of this conventional method, the phase-pure Fdoping SmFeAsO samples were sintered at 1173 K for only 2 h by employing high-energy ball-milled starting materials of SmAs and FeO [20]. As it is well known, mechanical alloying (MA) method has been successfully used in the preparations of alloys [21][22][23], ceramics, and some superconductors such as MgB 2 and YBa 2 Cu 3 O 7−ı [24,25]. Considering the complicated preparation of individual starting materials, the mechanical alloying may be a simpler method to form a homogeneous precursor to obtain the high-quality product.…”

Section: Introductionmentioning

confidence: 99%