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Content Provider | IEEE Xplore Digital Library |
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Author | Moriwaki, Y. Sugano, T. Adachi, S. Tanabe, K. Tsukamoto, A. |
Copyright Year | 2002 |
Abstract | We have successfully fabricated 200-500 nm thick highly c-axis oriented (Hg,Re)-1223 and (Hg,M)-1212 (M=Re,Mo) thin films on SrTiO/sub 3/(100) substrates by using HgO/M-Ba-Ca-Cu-O multilayer precursor films prepared by pulsed laser deposition. Their electrical transport properties in magnetic fields less than 7 T are investigated using 5-50 /spl mu/m wide bridges patterned by means of electron-beam lithography and ion milling without using water. The (Hg,Re)-1223 film exhibits a T/sub c/(zero) of 127.5 K and a J/sub c/ value at 77 K of 1.5 and 0.2/spl times/10/sup 6/ A/cm/sup 2/ in a self-field and 1 T field, respectively. Higher J/sub c/ values below 100 K are observed for (Hg,M)-1212 (M=Re,Mo) films with better crystallinity and surface morphology than the 1223 film in spite of their lower T/sub c/ (zero) of 115-122 K. The (Hg,Re)-1212 film exhibits the highest J/sub c/ values of 5, 1.5, and 0.4/spl times/10/sup 6/ A/cm/sup 2/ at 77 and 100 K in a self-field and at 77 K in 1 T field, respectively. The irreversibility field above 77 K evaluated from the resistive transitions of these films is found to be substantially higher than those for undoped Hg-1212 and Tl-1223 thin films. |
Sponsorship | Council on Superconductivity Appl. Superconductivity Conference Inc MIT |
Starting Page | 2390 |
Ending Page | 2393 |
Page Count | 4 |
File Size | 520466 |
File Format | |
ISSN | 10518223 |
Volume Number | 9 |
Issue Number | 2 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 1999-06-01 |
Publisher Place | U.S.A. |
Access Restriction | One Nation One Subscription (ONOS) |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Magnetic films Pulsed laser deposition Sputtering Substrates Magnetic multilayers Optical pulses Magnetic properties Magnetic fields Bridges Lithography |
Content Type | Text |
Resource Type | Article |
Subject | Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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