Critical current goniometer
Our critical current goniometer system uses a purpose-built probe and software to measure critical current and n value as a function of rotation angle around two axes in external fields up to 0.6 T. A high current capability of around 200 A allows high-performance, full-width commercial conductors to be tested in all orientations even at low applied fields.
This technique is extremely valuable for characterising the anisotropy of high temperature superconductors and their pinning structures, both for gaining scientific understanding of the behaviour of materials and as a method for conductor optimisation. It also allows the performance of a conductor to be assessed in the context of its operating environment for applications, to aid with design validation and materials qualification. Measurements on commercial YBCO and BSCCO conductors in liquid nitrogen are currently in progress.
 Diagram of the critical current goniometer probe |
 Rotation axes and angles |
Related Publications
| Showing 13 publications related to goniometric critical current measurements in reverse date order. Links to online copies of these papers may require a journal subscription (personal or institutional). | |
|---|---|
| 2011 | |
| 1 | M Chudy, S C Hopkins, M Woźniak, B A Glowacki, M Eisterer and H W Weber, Full angular critical current characteristics of coated conductors studied using a two-axis high current goniometer Superconductor Science and Technology, 24 (7) 075018 (July 2011) | DOI: 10.1088/0953-2048/24/7/075018 |
| 2001 | |
| 2 | M.Majoros, B.A.Glowacki and A.M.Campbell, Critical current anisotropy in Ag(Pb,Bi)2Sr2Ca2Cu3O10+x multifilamentary tapes: influence of the self-magnetic field Superconductor Science and Technology, 14 353 (2001) |
| 1998 | |
| 3 | B.A.Glowacki, M.Ciszek, S.Wu and W.Y.Liang, Critical current anisotropy of Tl-1223 superconductors Journal of Superconductivity, 11 21 (1998) |
| 1997 | |
| 4 | B.A.Glowacki, Critical current anisotropy minimum of Tl-1223 superconductors Inst. Phys. Conf. Ser., No.158 1287 (1997) EUCAS '97: 3rd European Conference on Applied Superconductivity, Eindhoven, The Netherlands, 29 June-3 July 1997 |
| 5 | B.A.Glowacki, Critical current anisotropy of Tl-1223 superconductors Cryogenics, 37 609 (1997) |
| 1995 | |
| 6 | M.Chen, D.M.Glowacka, B.Soylu, D.Watson, J.K.S.Christiansen, Y.Yan, B.A.Glowacki and J.E.Evetts, Texture and critical current anisotropy in composite reaction textured MgO whiskers/Bi2212 multilayer structures IEEE Transactions on Applied Superconductivity, 5 (2) 1467 (June 1995) | View paper online |
| 1994 | |
| 7 | S.P.Ashworth and B.A.Glowacki, Anisotropic critical current densities of silver sheathed BSCCO-2223 tape Physica C, 226 159 (1994) |
| 8 | A.P.Baker, B.A.Glowacki and R.Riddle, Improving critical current anisotropy in Bi-2212 coatings through controlled flow of the melt formed in partial melt processing Advances in Cryogenics Engineering, 40A 201 (1994) Tenth International Cryogenic Materials Conference (ICMC), Albuquerque, New Mexico, July 12-16, 1993 |
| 1992 | |
| 9 | B.A.Glowacki, W.Lo and J.E.Evetts, The critical current anisotropy of the Ag-(Bi,Pb)2Sr2Ca2Cu3Ox tape form conductor Superconductor Science and Technology, 5 S332 (1992) |
| 1991 | |
| 10 | Wai Lo and B.A.Glowacki, Effect of cold rolling on microstructure, grain alignment and transport critical current anisotropy of silver clad (Bi,Pb)2Sr2Ca2Cu3Ox superconducting tapes Superconductor Science and Technology, 4 S361 (1991) |
| 1990 | |
| 11 | B.A.Glowacki, N.Ozkan and P.A.Freeman, Influence of the high Tc superconducting particles orientation during semi-wet extrusion on the critical current anisotropy Proceedings of the High Tc Superconductors Symposium (7th CIMTEC World Ceramic Congress) edited by P.Vincenzini, Trieste, Italy, July 663 (1990) High Tc Superconductors Symposium, 7th CIMTEC World Ceramic Congress, Faenza, Italy, 24-30 June 1990 |
| 1988 | |
| 12 | B.A.Glowacki and J.E.Evetts, Critical current anisotropy in sintered superconducting YBa2Cu3O7 Mater. Res. Soc. Proc., 99 741 (1988) MRS High-Temperature Superconductors Symposium, Boston, MA, 30 Nov-4 Dec 1987 |
| 1985 | |
| 13 | B.A.Glowacki, Anisotropy of critical current density in the superconducting Nb3Sn tape wires Journal of Materials Science Letters, 4 389 (1985) |