Microscopic changes in HoNi2B2C due to thermal treatment and its effect on superconductivity
A. Dertinger, R. E. Dinnebier, A. Kreyssig, P. W. Stephens, S. Pagola, M. Loewenhaupt, S. van Smaalen, H. F. Braun
DOI 10.1103/PhysRevB.63.184518 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
The low-temperature properties of HoNi2B2C strongly depend on its thermodynamic state established via thermal treatment. We present high resolution x-ray powder diffraction data taken on a pair of polycrystalline samples with identical chemical composition (HoNi2B2.1C) but annealed at different temperatures, namely, at 800 and at 1100 °C. Their superconducting transition temperatures differ by more than 10%. Rietveld refinement and difference Fourier analysis reveal subtle differences in the atomic parameters and in the electron density on the carbon site. Furthermore, a new atomic site can be identified for both samples, which is partially occupied with the lighter atoms boron or carbon.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| HoNi2B2.1C Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 9.21 | Pressure not reported | onset |
| HoNi2B2.1C Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 8.3 | Pressure not reported | onset |
Similar papers
Pressure effects and specific heat in superconducting HoNi2B2C
similarity 0.96S. A. Carter et al.
Source status unknown — claims are unverified
Magnetic transitions and nearly reentrant superconducting properties of HoNi2B2C
similarity 0.95M. S. Lin et al.
Source status unknown — claims are unverified
Spin waves and high-frequency response in layered superconductors with helical magnetic structure
similarity 0.95A. E. Koshelev
Source status unknown — claims are unverified
Magnetism and superconductivity in single-crystal ErNi2B2C
similarity 0.94B. K. Cho et al.
Source status unknown — claims are unverified
Superconducting anisotropy of YNi2B2C
similarity 0.94E. Johnston-Halperin et al.
Source status unknown — claims are unverified
Neutron-powder-diffraction study of the nuclear and magnetic structures of the antiferromagnetic superconductor HoNi2B2C
similarity 0.93Q. Huang et al.
Source status unknown — claims are unverified