Skip to main content Accessibility help

Ion Beam Modification of TI-Ba-Ca-Cu-O Type High Temperature Superconductors During Irradiation

  • P.P. Newcomer (a1), L. M. Wang (a2) and B. Morosin (a1)


Microstructural modification of high temperature superconductor (HTS) single-crystal plates of T1-1212 and T1-2212 (numbers designate the Tl/Ba/Ca/Cu cation ratio) was studied during 1.5 MeV Kr+ and Xe+ ion irradiation with in-situ electron diffraction and after ion irradiation with high resolution TEM (HRTEM). Similar in-situ temperature dependence effects are seen for both phases. During irradiations from 22K to 673K, an amorphous halo develops after very low ion dose or fluence (l.7X1012 ions/cm2). During irradiation at 100K and 300K, complete amorphization is obtained, while at 22K and ≥533K, the halo fades slightly and a polycrystalline ring pattern develops, indicating ion irradiation induced crystallization occurred. After a low ion dose (8.5XlO12ions/cm2) at 100K and 300K, HRTEM reveals amorphous regions 5 -20 nm in size which are not columnar and do not all penetrate the entire sample thickness. At 22K and ≥533K, Moire fringes and misoriented crystallites of cascade size are observed. The 4 - 6nm crystallites are thallium-rich.



Hide All
1. Morosin, B., Baughman, R.J., Ginley, D.S., Schirber, J.E., Venturini, E.L., Physica C 161, 115 (1990).
2. Morosin, B., Ginley, D.S., Venturini, E.L., Tigges, C.P., Physica C., 172, 413 (1991).
3. Raveau, B., Physics Today 45, 10, 53 (1992).
4. Barbour, J.C., Venturini, E.L., Ginley, D.S., and Kwak, J.F., Nucl. Instr. & Meth. B 65, 531 (1992).
5. Venturini, E.L., Tigges, C.P., Baughman, R.J., Morosin, B., Barbour, J.C., Mitchell, M.A., Jour. of Crystal Growth 109, 441 (1991).
6. Barbour, J.C., Venturini, E.L., Ginley, D.S., Nucl. Instr. and Methods in Phys. Research B59/60, 1395 (1991).
7. Barbour, J.C., private communication.
8. Magnetic and Superconducting Materials ed. by Evatts, J., Pergamon Press (1992)
9. Morosin, B., Venturini, E.L., Dunn, R.G., Schirber, S.E., Newcomer, P.P., Bull. Amer. Phys. Soc. 39 (1994).
10. Allen, C.W., Funk, L.L., Ryan, E.A., Ockers, S.T., Nucl. Inst. and Methods B40/41, 553 (1989)
11. Sattler, K., O'Keefe, M.A., in Proc. 45th Annual EMSA Meeting, 104 (1987).
12. Wang, L.M., Ewing, R.C. MRS Bulletin 17, 3844, 1992.
13. Wang, L.M., Gong, W.L., Ewing, R.C., MRS Symp. Proc. 316 (1994)
14. Weber, W.J., Ewing, R.C., Wang, L.M., J. Mater. Res. 9 (3) (1994).
15. Miller, M.L., Ewing, R.C., Ultramicroscopy 48, 203 (1993).
16. Wang, L.M., Birtcher, R.C., Ewing, R.C., Nucl. Instr. and Methods in Physics Research B80/81, 1109 (1993).
17. Zhu, Y., Cai, Z.X., Budhani, R.C., Suenaga, M., Welch, D.O., Phys. Rev. B 48(9), 6436 (1993).

Ion Beam Modification of TI-Ba-Ca-Cu-O Type High Temperature Superconductors During Irradiation

  • P.P. Newcomer (a1), L. M. Wang (a2) and B. Morosin (a1)


Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed