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Title: Interwoven magnetic and flux line structures in single crystal (Tm,Er)Ni{sub 2}B{sub 2}C (invited)

Abstract

We review studies of the interactions between magnetic order and the flux line lattice (FLL) in the (RE)Ni{sub 2}B{sub 2}C intermetallic borocarbides for (RE)=Tm and Er using small angle neutron scattering (SANS) and magneto-transport. For (RE)=Tm the magnetic order and the FLL assume a common symmetry, sharing a phase transition at {approx}2 kOe, despite an order of magnitude difference in periodicity. For (RE)=Er, the penetration depth {lambda} and the coherence length {xi}, both of which are derived from the FLL form factor, are modified near T{sub N}=6 K by a theoretically predicted weakly divergent pairbreaking. Finally, below 2.3 K, (RE)=Er shows a coexistence of weak ferromagnetism and superconductivity. This state reveals a highly disordered FLL and a striking increase in the critical current, both arising from the strong ferromagnetic pairbreaking. (c) 2000 American Institute of Physics.

Authors:
 [1];  [1];  [1];  [2];  [2];  [2];  [3];  [3];  [3]
  1. Bell Laboratories, Lucent Technologies, 700 Mountain Avenue, Murray Hill, New Jersey 07974 (United States)
  2. Risoe National Laboratories, DK-4000, Roskilde, (Denmark)
  3. Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011 (United States)
Publication Date:
OSTI Identifier:
20216241
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 87; Journal Issue: 9; Other Information: PBD: 1 May 2000; Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; THULIUM COMPOUNDS; ERBIUM COMPOUNDS; NICKEL COMPOUNDS; BORIDES; CARBIDES; MAGNETIC FLUX; SUPERCONDUCTORS; INTERMETALLIC COMPOUNDS; PENETRATION DEPTH; NEUTRON DIFFRACTION

Citation Formats

Gammel, P. L., Lopez, D., Bishop, D. J., Eskildsen, M. R., Andersen, N. H., Mortensen, K., Fisher, I. R., Cheon, K. O., and Canfield, P. C. Interwoven magnetic and flux line structures in single crystal (Tm,Er)Ni{sub 2}B{sub 2}C (invited). United States: N. p., 2000. Web. doi:10.1063/1.373399.
Gammel, P. L., Lopez, D., Bishop, D. J., Eskildsen, M. R., Andersen, N. H., Mortensen, K., Fisher, I. R., Cheon, K. O., & Canfield, P. C. Interwoven magnetic and flux line structures in single crystal (Tm,Er)Ni{sub 2}B{sub 2}C (invited). United States. doi:10.1063/1.373399.
Gammel, P. L., Lopez, D., Bishop, D. J., Eskildsen, M. R., Andersen, N. H., Mortensen, K., Fisher, I. R., Cheon, K. O., and Canfield, P. C. Mon . "Interwoven magnetic and flux line structures in single crystal (Tm,Er)Ni{sub 2}B{sub 2}C (invited)". United States. doi:10.1063/1.373399.
@article{osti_20216241,
title = {Interwoven magnetic and flux line structures in single crystal (Tm,Er)Ni{sub 2}B{sub 2}C (invited)},
author = {Gammel, P. L. and Lopez, D. and Bishop, D. J. and Eskildsen, M. R. and Andersen, N. H. and Mortensen, K. and Fisher, I. R. and Cheon, K. O. and Canfield, P. C.},
abstractNote = {We review studies of the interactions between magnetic order and the flux line lattice (FLL) in the (RE)Ni{sub 2}B{sub 2}C intermetallic borocarbides for (RE)=Tm and Er using small angle neutron scattering (SANS) and magneto-transport. For (RE)=Tm the magnetic order and the FLL assume a common symmetry, sharing a phase transition at {approx}2 kOe, despite an order of magnitude difference in periodicity. For (RE)=Er, the penetration depth {lambda} and the coherence length {xi}, both of which are derived from the FLL form factor, are modified near T{sub N}=6 K by a theoretically predicted weakly divergent pairbreaking. Finally, below 2.3 K, (RE)=Er shows a coexistence of weak ferromagnetism and superconductivity. This state reveals a highly disordered FLL and a striking increase in the critical current, both arising from the strong ferromagnetic pairbreaking. (c) 2000 American Institute of Physics.},
doi = {10.1063/1.373399},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 9,
volume = 87,
place = {United States},
year = {2000},
month = {5}
}