ANISOTROPIC MAGNETISM AND RESISTIVITY OF AN AL70NI15CO15 DECAGONAL QUASI-CRYSTAL Academic Article uri icon

abstract

  • We report the results of dc magnetization and electrical resistivity studies of a single-domain Al70Ni15Co15decagonal quasicrystal. The temperature dependence and anisotropy of the electrical resistivity are in excellent agreement with previous results for a similar sample. The magnetic properties were determined by superconducting quantum interference device magnetometry over the temperature range 1.8-300 K for magnetic fields between 10 Oe and 10 kOe. The magnetic behavior can be characterized by a weak ferromagnetic component M0(H) which saturates in moderate fields (H1 kOe) and a differential susceptibility, 0=M/H, obtainable from the high-field data. The observed magnetization M=0H+M0is slightly anisotropic and essentially temperature independent below room temperature. For H parallel to the quasicrystal axis, we observe 0=7. 110-7emu/g and M0=2.010-3emu/g. For H perpendicular to the quasicrystal axes, we obtain 0=8.210-7emu/g and M0=1.710-3emu/g. An anisotropic and weak superconducting transition was observed at T=3.2 K, corresponding to a superconducting volume fraction of only 10-3.

published proceedings

  • JOURNAL OF APPLIED PHYSICS

author list (cited authors)

  • MARKERT, J. T., COBB, J. L., BRUTON, W. D., BHATNAGAR, A. K., NAUGLE, D. G., & KORTAN, A. R.

citation count

  • 11

complete list of authors

  • MARKERT, JT||COBB, JL||BRUTON, WD||BHATNAGAR, AK||NAUGLE, DG||KORTAN, AR

publication date

  • November 1994