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| Title: | Magnetization study of (Hg,Cr)Sr2CuO4+delta superconductor |
| Authors: | BALAMURUGAN, S
GOPALAKRISHNAN, IK
YAKHMI, JV
SELVAM, P |
| Keywords: | high-tc superconductors
high-temperature superconductors
mercury-based superconductor
hgba2cuo4+delta
irreversibility
hg0.7cr0.3sr2cuo4+delta
fluctuations
transport
crystals
lattice |
| Issue Date: | 2001 |
| Publisher: | KLUWER ACADEMIC/PLENUM PUBL |
| Citation: | JOURNAL OF SUPERCONDUCTIVITY, 14(4), 519-523 |
| Abstract: | (Hg,Cr)-Sr-1201 type superconductor of nominal composition Hg0.7Cr0.3Sr2CuO4+delta was synthesized by the sealed quartz-tube method. X-ray diffraction analysis of the sample showed it has tetragonal symmetry with lattice parameters a = 3.841(1) Angstrom, and c = 8.664(3) Angstrom. The as-prepared sample is superconducting at 60 K as shown by dc-magnetization and dc-resistivity measurements, The irreversibility line (IL) obtained from the merging point of the zero-field-cooled and the field-cooled magnetization measurements at several applied fields was found to obey the equation H = A(1 - T/T-c)(n) and gave a value of 2.55 for the exponent "n." Using magnetic hysteresis loops the critical current density of superconducting (Hg,Cr)-Sr-1201 was estimated. The irreversibility line and magnetic hysteresis showed reduced pinning properties of (Hg,Cr)-Sr-1201 as compared to HgBa2CuO4+delta. |
| URI: | http://dx.doi.org/10.1023/A:1012243831169
http://dspace.library.iitb.ac.in/xmlui/handle/10054/9829
http://hdl.handle.net/10054/9829 |
| ISSN: | 0896-1107 |
| Appears in Collections: | Article
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