Kondo effect in the paramagnetic phase of CrFe alloy with the spin-density-wave suppressed by pressure or V doping
- Physics Department of Federal University of Parana, Curitiba 81 531 990 (Brazil)
- CBPF, Rio de Janeiro (Brazil)
- Physics Department of University of Toronto, Toronto M5S 1A7 (Canada)
The pressure dependence of the resistivity {rho}(T) of (Cr+2.7 at.{percent}Fe){sub 98}V{sub 2} is measured, following a previous study of the temperature dependence of {rho}(T) in the spin-density-wave (SDW) alloy system, (Cr+2.7 at.{percent} Fe){sub 1{minus}x}(V,Mn){sub x}. The minimum in {rho}(T) in the V-doped alloys seen at T{approx_gt}T{sub N} for x{gt}1 at.{percent} is found to move to lower temperatures under pressure p in the alloy containing 2 at.{percent} V, decreasing in magnitude, and eventually, as the Neel temperature T{sub N} goes to zero at p{approx}10 kbar, becoming a very shallow minimum followed by a maximum and a rapid decrease as T{r_arrow}4.2 K. This latter behavior in the paramagnetic phase is believed to be due to the Kondo effect, while the pressure dependent minimum in {rho}(T) in the SDW phase is a manifestation of impurity resonance scattering. {copyright} {ital 1997 American Institute of Physics.}
- OSTI ID:
- 496440
- Report Number(s):
- CONF-961141-; ISSN 0021-8979; TRN: 97:016141
- Journal Information:
- Journal of Applied Physics, Vol. 81, Issue 8; Conference: 41. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 12-15 Nov 1996; Other Information: PBD: Apr 1997
- Country of Publication:
- United States
- Language:
- English
Similar Records
Magnetoelastic and pressure effects at the antiferro{endash}ferromagnetic transition in Hf{sub 1{minus}{ital x}}Ta{sub {ital x}}Fe{sub 2{minus}{ital y}} alloys
Pressure dependence of superconductivity in re-entrant Ce Kondo systems and non-magnetic U systems