Effects of  -Fe2O3on the transport critical current density of (Bi1.6Pb0.4Sr2Ca2Cu3O10superconductors

Yahya, Saadiah; Jumali, Mohammad Hafizuddin Hj; Lee, C. H.; Abd‐Shukor, R.

doi:10.1023/b:jmsc.0000047564.18254.b5

Cited by 19 publications

(5 citation statements)

References 3 publications

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“…0.06 and 0.10 wt% lower than x = 0.08 wt% which is necessery for high J c as reported [10]. Equations 1 and 2 shows the volume fraction of the 2223 phase (Bi, Pb -2223) and 2212 phase (Bi, Pb -2212) was determined as ratio of X-ray peak intensity of H plane of 2223 to L plane of 2212 phase [11]. The volume fractions of high T c and low T c phases can be estimated from the intensities of high-J c , low-J c phase peaks and other peaks observed, as used in Ref.…”

Section: Resultsmentioning

confidence: 93%

Synthesis of Bi1.6Pb0.4Sr2Ca2Cu3O10+δ-(Dy2O3)x Added with Magnetic Nanoparticles Dy2O3 Dysprosium Oxide (0.0≤x≤0.1) via Co-Precipitation Method

Suib

Mahmud

Yahya

et al. 2013

AMR

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Superconducting study present the properties of small weight percent of magnetic nanoparticles Dy2O3 from x = 0.0 to 0.10 added in Bi1.6Pb0.4Sr2Ca2Cu3O10+δ (Dy2O3)x. It is found, the form size of magnetic nanoparticles Dy2O3 is spherical, nano Dy2O3 particles will enter easily into the Bi, Pb-2223 superconductor. From here it is early to conclude the inducing of Dy atoms into the Bi, Pb-2223 crystal structure because Bi-based superconductors are known for their strong anistropic properties and extremely short coherence length (ξ) as long there are significant change in it microstructure, lattice parameter and the normal state conductivity of the system. The characterization on critical temperature (Tc) and transport critical current density (Jc) of magnetic nanoparticles Dy2O3 added to enhance the optimum amount levels added. The maximum Tc achieved Tc-(R=0) 109 K (for x = 0.4) as samples respectively compared to the pure samples. This results will discussed directly to the basis properties changes in Bi, Pb-2223 with addition of magnetic nanoparticles of Dy2O3.

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Section: Resultsmentioning

confidence: 93%

Synthesis of Bi1.6Pb0.4Sr2Ca2Cu3O10+δ-(Dy2O3)x Added with Magnetic Nanoparticles Dy2O3 Dysprosium Oxide (0.0≤x≤0.1) via Co-Precipitation Method

Suib

Mahmud

Yahya

et al. 2013

AMR

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“…The powders were ground and added with 0.01 % wt γ-Fe 2 O 3 before being packed into Ag tube with outer diameter of 6.03 mm and inner diameter of 4.43 mm. This % wt is chosen base on our previous studies on bulk 2223 samples where 0.01 % wt of γ-Fe 2 O 3 optimized the superconducting properties of the system [4]. BSCCO powders were also prepared using the co-precipitation method described elsewhere [5].…”

Section: Materials and Experimental Methodsmentioning

confidence: 99%

Magnetic Nanoparticles as Pinning Center in Bi-Sr-Ca-Cu-O/Ag Superconductor Tapes

Abd‐Shukor

Yahya

2006

MSF

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This paper reports on the effectiveness of magnetic nanoparticles as pinning center in the Bi-based superconductor tapes. Nanosize γ-Fe2O3 and ultrafine Fe3O4 have been employed to enhance the transport current density of Ag-sheathed-(Bi1.6Pb0.4)Sr2Ca2Cu3O10 superconductor tapes prepared by the powder-in-tube technique. The transport critical current density, Jc of (Bi1.6Pb0.4)Sr2Ca2Cu3O10-(γ-Fe2O3)0.01, sintered at the optimum temperature of 845 oC is 6490 A/cm2 when measured at 77 K. A further single intermediate rolling step increases Jc to 9560 A/cm2. Samples without γ-Fe2O3 prepared under the same condition showed a lower Jc with a maximum of 1560 A/cm2. Similar results are also obtained for ultrafine Fe3O4. Magnetic impurities generally suppress superconductivity. However, our study shows great promise of magnetic nanorod γ-Fe2O3 and ultrafine Fe3O4 as novel pinning centers in enhancing the transport critical density of Ag sheathed Bi-Sr-Ca-Cu-O superconductor tapes. This is in line with previous calculations on frozen flux superconductor with magnetic nanoparticle as pinning centers.

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“…The powders were ground and added with 0.01wt% g-Fe 2 O 3 before being packed into Ag tube with outer diameter of 6.03 mm and inner diameter of 4.43 mm. This wt% is chosen based on our previous studies on bulk 2223 samples where 0.01wt% of g-Fe 2 O 3 optimized the superconducting properties of the system [10].…”

Section: Methodsmentioning

confidence: 99%

Transport critical current density of Bi–Sr–Ca–Cu–O/Ag superconductor tapes with addition of magnetic nanopowder γ-Fe₂O₃

Yahya¹,

Jumali²,

Lau³

et al. 2005

Science and Technology of Advanced Materials

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Effects of -Fe₂O₃on the transport critical current density of (Bi_1.6Pb_0.4Sr₂Ca₂Cu₃O₁₀superconductors

Cited by 19 publications

References 3 publications

Synthesis of Bi<sub>1.6</sub>Pb<sub>0.4</sub>Sr<sub>2</sub>Ca<sub>2</sub>Cu<sub>3</sub>O<sub>10+δ</sub>-(Dy<sub>2</sub>O<sub>3</sub>)<i><sub>x</sub></i> Added with Magnetic Nanoparticles Dy<sub>2</sub>O<sub>3</sub> Dysprosium Oxide (0.0<i>≤x</i>≤0.1) via Co-Precipitation Method

Synthesis of Bi<sub>1.6</sub>Pb<sub>0.4</sub>Sr<sub>2</sub>Ca<sub>2</sub>Cu<sub>3</sub>O<sub>10+δ</sub>-(Dy<sub>2</sub>O<sub>3</sub>)<i><sub>x</sub></i> Added with Magnetic Nanoparticles Dy<sub>2</sub>O<sub>3</sub> Dysprosium Oxide (0.0<i>≤x</i>≤0.1) via Co-Precipitation Method

Magnetic Nanoparticles as Pinning Center in Bi-Sr-Ca-Cu-O/Ag Superconductor Tapes

Transport critical current density of Bi–Sr–Ca–Cu–O/Ag superconductor tapes with addition of magnetic nanopowder γ-Fe₂O₃

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Effects of -Fe2O3on the transport critical current density of (Bi1.6Pb0.4Sr2Ca2Cu3O10superconductors

Cited by 19 publications

References 3 publications

Synthesis of Bi<sub>1.6</sub>Pb<sub>0.4</sub>Sr<sub>2</sub>Ca<sub>2</sub>Cu<sub>3</sub>O<sub>10+δ</sub>-(Dy<sub>2</sub>O<sub>3</sub>)<i><sub>x</sub></i> Added with Magnetic Nanoparticles Dy<sub>2</sub>O<sub>3</sub> Dysprosium Oxide (0.0<i>≤x</i>≤0.1) via Co-Precipitation Method

Synthesis of Bi<sub>1.6</sub>Pb<sub>0.4</sub>Sr<sub>2</sub>Ca<sub>2</sub>Cu<sub>3</sub>O<sub>10+δ</sub>-(Dy<sub>2</sub>O<sub>3</sub>)<i><sub>x</sub></i> Added with Magnetic Nanoparticles Dy<sub>2</sub>O<sub>3</sub> Dysprosium Oxide (0.0<i>≤x</i>≤0.1) via Co-Precipitation Method

Magnetic Nanoparticles as Pinning Center in Bi-Sr-Ca-Cu-O/Ag Superconductor Tapes

Transport critical current density of Bi–Sr–Ca–Cu–O/Ag superconductor tapes with addition of magnetic nanopowder γ-Fe2O3

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Effects of -Fe₂O₃on the transport critical current density of (Bi_1.6Pb_0.4Sr₂Ca₂Cu₃O₁₀superconductors

Transport critical current density of Bi–Sr–Ca–Cu–O/Ag superconductor tapes with addition of magnetic nanopowder γ-Fe₂O₃