نتایج جستجو برای: تشکیل فاز 2223

تعداد نتایج: 73221  

2012
Susmita Ghosh Priyanka Banerjee Avijit Sarkar Sudipto Ganguly Mitali Chatterjee

Co-infection of Leptomonas seymouri with Leishmania donovani in Indian Leishmaniasis 1 Running Title: Co-infection of Leptomonas seymouri with Leishmania donovani 2 3 Susmita Ghosh, Priyanka Banerjee, Avijit Sarkar, Sudipto Ganguly, Simanti Datta* 4 and Mitali Chatterjee* 5 6 Dept. of Pharmacology and Centre for Liver Research, School of Digestive and Liver 7 Diseases, Institute of Post Graduat...

1999
P. Kumar V. Pillai

We describe a new technique for the synthesis of ultrahomogeneous nanoparticles of precursor oxalate powder by coprecipitation in the aqueous core of a water-in-oil microemulsion for the preparation of Bi-Pb-Sr-Ca-Cu-0 (2223) oxide superconductor. This process ensures a uniform mixing of metal cations down to a scale of at least 10 nm. This finely dispersed precursor powder results in phase pur...

2012
In-Tsang Lin Hong-Chang Yang Jyh-Horng Chen

This study examines the enlargement of the field of view (FOV) and the maintenance of a high signal-to-noise ratio (SNR) through the use of two high-temperature superconducting (HTS) resonators in a 3T MRI. Two Bi(2)Sr(2)Ca(2)Cu(3)O(x) (Bi-2223) surface resonators, each of 4-cm diameter, were used in a 3T MRI. Professionally made copper resonators operate at 300 K, but each Bi-2223 resonator, o...

2002
T. Watanabe

A high-temperature superconducting (HTS) magnetic shield based on Bi(Pb)2-Sr2-Ca2-Cu3-Ox (Bi-2223) was fabricated by plasma spraying for the purpose of observing a somatosensory-evoked magnetic field generated from the human brain[1]. Recently, a Bi-2223 cylindrical magnetic shield was developed by dip-coating on a 99.9 % MgO ceramic substrate. A highly-sensitive current monitor using this HTS ...

Journal: :Physical review letters 2009
N Jenkins Y Fasano C Berthod I Maggio-Aprile A Piriou E Giannini B W Hoogenboom C Hess T Cren Ø Fischer

We have used scanning tunneling spectroscopy to investigate short-length electronic correlations in three-layer Bi2Sr2Ca2Cu3O(10+delta) (Bi-2223). We show that the superconducting gap and the energy Omega(dip), defined as the difference between the dip minimum and the gap, are both modulated in space following the lattice superstructure and are locally anticorrelated. Based on fits of our data ...

زرگرشوشتری , مرتضی, موسوی قهفرخی, سیدابراهیم,

In this paper Sb2O3 nanoparticles are synthesized by solution method. The effect of these nanoparticles on the Bi-2223 superconductor properties has been investigated. The critical temperature, critical current density and activation energy were measured by the standard four-probe method. Magnetic properties of the samples were measured by using the AC magnetic susceptibility. The microstructur...

زرگرشوشتری, مرتضی, موسوی‌قهفرخی, سیدابراهیم,

In this paper, Bi1.64-xPb0.36CdxSr2Ca2Cu3Oy (BPCSCCO) superconductor with x = 0.0, 0.02, 0.04 and 0.06 is made by the solid state reaction method. The magnetic susceptibility measurements were performed using AC susceptometer. The microstructure and morphology of the samples have been studied by X-ray diffraction, scanning electron microscope and energy dispersive X-ray. The results show that t...

احمدوند, حسین, باقی, مرضیه, سلامتی, هادی, سهرابی, داوود, عبدالحسینی, اسماعیل, مرشدلو, تکتم, کاملی, پرویز,

Bi1.8Pb0.4Sr2-xBaxCa2.2Cu3Oy (x-0, 0.1, 0.2, 0.3) samples were prepared by a conventional solid state reaction method. The effect of Ba substitution at Sr site in Bi-2223 high-TC superconductors have been investigated by the XRD, SEM, dc electrical resistivity and ac susceptibility. XRD and SEM analysis indicated Ba substitution decreased temperature of 2223 phase formation. The highest 2223 ph...

2013
A. N. Jannah

The effect of nano Co3O4 addition on the superconducting properties of (Bi, Pb)-2223 system was studied. The samples were prepared by the acetate coprecipitation method. The Co3O4 with different sizes (10-30 nm and 30-50 nm) from x=0.00 to 0.05 was added to Bi1.6Pb0.4Sr2Ca2Cu3Oy(Co3O4)x. Phase analysis by XRD method, microstructural examination by SEM and dc electrical resistivity by four point...

چکیده‌ ابررسانای سرامیکی Bi1.64Pb0.36Sr2Ca2-xCdxCu3O10آلایش یافته با Cd به روش سل ـ ژل ساخته شد. برای تهیه نمونه‌ها، مقدار آلایش کادمیوم از 2/0-0=x و زمان‌های پخت 32، 48، 56 و 64 ساعت انتخاب شدند. برای یافتن دمای شروع واکنش مواد اولیه از ژل خشک شده آنالیز TGA گرفته شد. ریخت‌شناسی و ریزساختار نمونه‌ها توسط XRD و SEM مورد بررسی قرار گرفت. نتایج حاصل از XRD نشان داد که‌ بیشترین درصد فاز 2223-Bi ،ب...

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