Low-temperature specific heat study of amorphous Co1-xBxalloys
- 1 July 1983
- journal article
- Published by IOP Publishing in Journal of Physics F: Metal Physics
- Vol. 13 (7) , 1539-1545
- https://doi.org/10.1088/0305-4608/13/7/023
Abstract
Low-temperature specific heats for amorphous Co1-xBx alloys (x=0.16, 0.18, 0.20, 0.22, 0.26 and 0.30) have been measured in the temperature range between 1.5 and 6K. The results are found to fit well to the equation C= gamma T+ alpha T3+ sigma sT32/+ sigma nT-2. The electronic specific heat coefficient gamma shows only a weak composition dependence and is close to the value for pure HCP Co. This suggests that the density of states near the Fermi level does not change appreciably with varying B content. The Debye temperature always exceeds 300K and increases monotonically with increasing B content. The observed nuclear specific heat coefficient sigma n allows the effective magnetic field Heff at the Co nuclear site to be determined. The value of 114 kOe mu B-1 is in good agreement with the reported valued derived from the NMR experiment on the amorphous Co75B25 alloy.Keywords
This publication has 17 references indexed in Scilit:
- Electronic structure in amorphous Fe, FexP1-xand FexBi1-xJournal of Physics F: Metal Physics, 1982
- Effects of metalloids on the magnetic properties of iron-and cobalt-based amorphous alloysJournal of Magnetism and Magnetic Materials, 1980
- Hyperfine field distribution at 59Co in glassy and crystalline Co3BJournal of Magnetism and Magnetic Materials, 1980
- Low-temperature magnetization study of crystalline and glassy Fe-B alloysPhysical Review B, 1979
- Magnetization of glassy Co-B alloysJournal of Applied Physics, 1979
- Iron-boron metallic glassesJournal of Applied Physics, 1978
- Invar-type new ferromagnetic amorphous Fe-B alloysSolid State Communications, 1977
- Observation of the Dispersion Relation for Spin Waves in Hexagonal CobaltJournal of Applied Physics, 1966
- The low temperature specific heats of some pure metals (Cu, Ag, Pt, Al, Ni, Fe, Co)Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1965
- Experimental Determination of the Hyperfine Coupling in Ferromagnetic Metals and AlloysJournal of Applied Physics, 1959