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- W2103990291 abstract "In this work, the effect of doping with 5% to 20% Poly Zinc Acrylate complexes (PZA) on the MgB <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sub> phase formation was studied. The changes of the lattice parameter and the amount of substituted Carbon, of the microstructure as well as the critical current temperature (T <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>c</sub> ) and the critical current density (J <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>c</sub> ) of bulk MgB <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sub> have been studied systematically. The DTA-TG and IR results show that the PZA was decomposed between 400°C and 600°C and the main decomposition products were carbonized polymers and ZnO. The lattice parameters ¿ in all PZA doped MgB <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sub> samples were decreased by different degrees, which indicates a gradual substitution of Carbon for the Boron sites in the MgB <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sub> lattice structure. Comparing with the undoped sample, the J <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>c</sub> values of all the doped samples were enhanced for about an order of magnitude under high magnetic fields. The J <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>c</sub> value of MgB <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sub> sample with 20% PZA doping and sintered at 800°C for 1 h reached 0.8 × 10 <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>4</sup> A/cm <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sup> at 5 k and 8 T. TEM images reveled a considerable amount of second phase particles of ~5 nm size and high density dislocations were observed in MgB <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sub> grains." @default.
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- W2103990291 date "2010-06-01" @default.
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- W2103990291 title "Study on the Effect of Doping With Poly Zinc Acrylate Complex (PZA) on the Superconducting Properties of Bulk ${rm MgB}_{2}$" @default.
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