Electronic structure, superconductivity and magnetism in the Zr-Co system

Structural, electronic and thermodynamic properties of ZrCo and ZrCoH3: A first-principles study

“…The calculated total DOS of ZrCo at the fermi level is N(E F ) ¼ 2.7625 states per eV-f.u. The coefficient of electronic specific heat g is estimated to be 6.505 mJ/ mol-K 2 , which is in line with the reported value of 7.44 mJ/mol-K 2 [48]. The overlap of d-states of both Zr and Co at fermi energy ensures the metallic nature of the ZrCo compound.…”

Surface oxidation and magnetic properties of (Cu60Co40)68Zr32 glassy ribbons

“…Although the magnetic susceptibilities obtained from ground off samples at high fields, i.e. ferro-/ferrimagnetic parts should not contribute due to saturation, are of the same order of magnitude (0.90 < [10 −9 m 3 mol −1 ] < 2.05) as comparable metallic glasses Co 25 Zr 75 ( = 2.110 −9 m 3 mol −1 ) [18] and Cu 41 Zr 59 ( = 1.410 −9 m 3 mol −1 ) [19], it is not clear to which extend regions near to the modified surface contribute to the signal. We propose the following model to explain the dependence of magnetic properties on the sample state: Induced by the oxidation of Zr at the surface, material near to the surface is assumed to separate into Co-and Cu-rich phases.…”

“…The presence of large amounts of pure Co that is also known to be soft magnetic on the other hand seems to be unreasonable from a phase constitutional point of view and furthermore magnetic order would already set in above room temperature. Table 1 shows the molar susceptibilities m for elemental Cu, Co, Zr and for various crystalline Cu-Zr and Co-Zr compounds [19,18]. In the first place the number of next nearest Co atoms and their distance to a central Co atom determine, whether the compound orders ferromagnetically or not so that the given information also serves as a criterion for which minimum Co content ferromagnetism should also be expected for amorphous compositions.…”

“…Molar susceptibilities m for elemental Cu, Co, Zr and for various crystalline Cu-Zr and Co-Zr compounds[19,18].Fig. 6.…”

Coercivity Enhancement in ${\rm Zr}_{2}{\rm Co}_{11}$-Based Nanocrystalline Materials Due to Mo Addition

“…Zr-Co alloys have attracted much attention due to interesting properties such as superconductivity, high glass forming ability, and potential suitabilibity for permanent magnetism [1]- [3]. Recently, much work was focused on hard magnetism of Zr-Co alloys.…”