Absence of a Competition between Magnetism and Superconductivity in the Layered Nickel Borocarbides: Common Correlation Tc with Crystal Chemical Parameters for Magnetic and Nonmagnetic Compounds

Details Absence of a Competition between Magnetism and Superconductivity in the Layered Nickel Borocarbides: Common Correlation Tc with Crystal Chemical Parameters for Magnetic and Nonmagnetic Compounds Absence of a Competition between Magnetism and Superconductivity in the Layered Nickel Borocarbides: Common Correlation Tc with Crystal Chemical Parameters for Magnetic and Nonmagnetic Compounds

2002-05-26

arxiv.org/abs/cond-mat/0205533v1

Physics

Condensed Matter

Superconductivity

17 pages, 6 figures, 4 table

Scientific paper

In the work the analysis of crystal chemical researches of nickel borocarbides RNi2B2C (R = rare earth) is given. The reasons of representation of dependence of Tc from crystal chemical parameters by two separate curves for magnetic and nonmagnetic R are considered. Common for all R dependences of Tc from crystal chemical parameters similar existing in layered quasi-two-dimensional systems (HTSC cuprates and diborides) are established. The absence of influence on borocarbides Tc of magnetic properties R is determined. On the basis of the found correlations the radii of a number of rare earths are precised and Tc of compounds at various substitutions R are calculated.

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