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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Zili Zhang Hongli Suo Lin Ma Min Liu Teng Zhang Meiling Zhou |
| Copyright Year | 2002 |
| Abstract | In this work, the effect of doping with 5% to 20% Poly Zinc Acrylate complexes (PZA) on the MgB2 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 (Tc) and the critical current density (Jc) of bulk MgB2 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 MgB2 samples were decreased by different degrees, which indicates a gradual substitution of Carbon for the Boron sites in the MgB2 lattice structure. Comparing with the undoped sample, the Jc values of all the doped samples were enhanced for about an order of magnitude under high magnetic fields. The Jc value of MgB2 sample with 20% PZA doping and sintered at 800°C for 1 h reached 0.8 × 104 A/cm2 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 MgB2 grains. |
| Sponsorship | Council on Superconductivity Appl. Superconductivity Conference Inc MIT |
| Starting Page | 1605 |
| Ending Page | 1609 |
| Page Count | 5 |
| File Size | 1698513 |
| File Format | |
| ISSN | 10518223 |
| Volume Number | 20 |
| Issue Number | 3 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2010-06-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Doping Lattices Microstructure Critical current Temperature Critical current density Polymers Zinc oxide Boron Magnetic fields poly zinc acrylate complexes ${\rm MgB}_{2}$ |
| Content Type | Text |
| Resource Type | Article |
| Subject | Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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