Effect of Ag2O addition on the intergranular properties of the superconducting Bi–(Pb)–Sr–Ca–Cu–O system
The effect of Ag2O addition on the Bi–(Pb)–Sr–Ca–Cu–O system has been investigated in terms of ac susceptibility, phase evolution, critical current density and critical temperature. It was found that as the amount of Ag2O addition increases, the intergranular critical current density decreases in ou...
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| Format: | Article |
| Language: | English English |
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Institute of Physics Publishing
2003
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| Online Access: | http://psasir.upm.edu.my/id/eprint/40240/1/Effect%20of%20Ag2O%20addition%20on%20the%20intergranular%20properties%20of%20the%20superconducting%20Bi%E2%80%93%28Pb%29%E2%80%93Sr%E2%80%93Ca%E2%80%93Cu%E2%80%93O%20system.pdf http://psasir.upm.edu.my/id/eprint/40240/7/makaleA4.pdf |
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| author | Karaca, Ibrahim Celebi, Selahattin Varilci, Ahmet Malik, A. I. |
| author_facet | Karaca, Ibrahim Celebi, Selahattin Varilci, Ahmet Malik, A. I. |
| author_sort | Karaca, Ibrahim |
| collection | UPM |
| description | The effect of Ag2O addition on the Bi–(Pb)–Sr–Ca–Cu–O system has been investigated in terms of ac susceptibility, phase evolution, critical current density and critical temperature. It was found that as the amount of Ag2O addition increases, the intergranular critical current density decreases in our samples (Bi1.84Pb0.34Sr1.91Ca2.03Cu3.06O10) fabricated by ammonium nitrate technique. The analysis for comparison is based on the suppression degree of the diamagnetic behaviour with respect to fields, rapid or slow shift of the summit in χ'(T) to lower temperature with increasing field amplitude and the sharpness of the transition of χ'(T) for intergranular component for the same field amplitude. We also qualitatively discuss experimental results in the framework of the critical state model. The room temperature XRD diagram indicates the presence of large amount of high-Tc (2223) phase. The percentage of Bi-2223 phase in the phase mixture was estimated from the intensities of high-Tc (2223) and low-Tc (2212) phase peaks as 78% for the pure BSCCO sample. Among the Ag2O-added BSCCO samples studied, the one in which 5 wt%Ag2O was added shows the highest rate of Bi-2223 formation as 92%. The SEM analysis reveals some morphological changes induced by silver addition. |
| first_indexed | 2024-03-06T08:46:29Z |
| format | Article |
| id | upm.eprints-40240 |
| institution | Universiti Putra Malaysia |
| language | English English |
| last_indexed | 2024-09-25T03:34:17Z |
| publishDate | 2003 |
| publisher | Institute of Physics Publishing |
| record_format | dspace |
| spelling | upm.eprints-402402024-09-05T06:55:20Z http://psasir.upm.edu.my/id/eprint/40240/ Effect of Ag2O addition on the intergranular properties of the superconducting Bi–(Pb)–Sr–Ca–Cu–O system Karaca, Ibrahim Celebi, Selahattin Varilci, Ahmet Malik, A. I. The effect of Ag2O addition on the Bi–(Pb)–Sr–Ca–Cu–O system has been investigated in terms of ac susceptibility, phase evolution, critical current density and critical temperature. It was found that as the amount of Ag2O addition increases, the intergranular critical current density decreases in our samples (Bi1.84Pb0.34Sr1.91Ca2.03Cu3.06O10) fabricated by ammonium nitrate technique. The analysis for comparison is based on the suppression degree of the diamagnetic behaviour with respect to fields, rapid or slow shift of the summit in χ'(T) to lower temperature with increasing field amplitude and the sharpness of the transition of χ'(T) for intergranular component for the same field amplitude. We also qualitatively discuss experimental results in the framework of the critical state model. The room temperature XRD diagram indicates the presence of large amount of high-Tc (2223) phase. The percentage of Bi-2223 phase in the phase mixture was estimated from the intensities of high-Tc (2223) and low-Tc (2212) phase peaks as 78% for the pure BSCCO sample. Among the Ag2O-added BSCCO samples studied, the one in which 5 wt%Ag2O was added shows the highest rate of Bi-2223 formation as 92%. The SEM analysis reveals some morphological changes induced by silver addition. Institute of Physics Publishing 2003 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/40240/1/Effect%20of%20Ag2O%20addition%20on%20the%20intergranular%20properties%20of%20the%20superconducting%20Bi%E2%80%93%28Pb%29%E2%80%93Sr%E2%80%93Ca%E2%80%93Cu%E2%80%93O%20system.pdf text en http://psasir.upm.edu.my/id/eprint/40240/7/makaleA4.pdf Karaca, Ibrahim and Celebi, Selahattin and Varilci, Ahmet and Malik, A. I. (2003) Effect of Ag2O addition on the intergranular properties of the superconducting Bi–(Pb)–Sr–Ca–Cu–O system. Superconductor Science and Technology, 16 (1). pp. 100-104. ISSN 0953-2048; ESSN: 1361-6668 http://iopscience.iop.org/0953-2048/16/1/318 10.1088/0953-2048/16/1/318 |
| spellingShingle | Karaca, Ibrahim Celebi, Selahattin Varilci, Ahmet Malik, A. I. Effect of Ag2O addition on the intergranular properties of the superconducting Bi–(Pb)–Sr–Ca–Cu–O system |
| title | Effect of Ag2O addition on the intergranular properties of the superconducting Bi–(Pb)–Sr–Ca–Cu–O system |
| title_full | Effect of Ag2O addition on the intergranular properties of the superconducting Bi–(Pb)–Sr–Ca–Cu–O system |
| title_fullStr | Effect of Ag2O addition on the intergranular properties of the superconducting Bi–(Pb)–Sr–Ca–Cu–O system |
| title_full_unstemmed | Effect of Ag2O addition on the intergranular properties of the superconducting Bi–(Pb)–Sr–Ca–Cu–O system |
| title_short | Effect of Ag2O addition on the intergranular properties of the superconducting Bi–(Pb)–Sr–Ca–Cu–O system |
| title_sort | effect of ag2o addition on the intergranular properties of the superconducting bi pb sr ca cu o system |
| url | http://psasir.upm.edu.my/id/eprint/40240/1/Effect%20of%20Ag2O%20addition%20on%20the%20intergranular%20properties%20of%20the%20superconducting%20Bi%E2%80%93%28Pb%29%E2%80%93Sr%E2%80%93Ca%E2%80%93Cu%E2%80%93O%20system.pdf http://psasir.upm.edu.my/id/eprint/40240/7/makaleA4.pdf |
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