Superconductivity and magnetism

Geballe, T.H. and Hulm, J.K. (1992) Superconducting Materials An Overview, in Concise Encyclopedia of Magnetic and Superconducting Materials, ed. Evetts, J.E. (Pergamon Press, Oxford) p. 533. 

Because they exhibit interplay of magnetic and superconducting properties, the formation and crystal chemistry of MRgMy4B4 compounds have been examined. Ternary rare-earth and actinide (Th, U, Pu)-transition metal borides of the approxi-... 

They included five eligible materials classes, two favored (electronic-photonic and biomolecular) and three others (structural, magnetic, and superconducting materials). 

Electronic, Optoelectronic, Photonic, Magnetic, and Superconducting Materials... 

In passing, it would be worth mentioning the corresponding situation in condensed matter physics. Magnetism and superconductivity (SC) have been two major concepts in condensed matter physics and their interplay has been repeatedly discussed [14], Very recently some materials have been observed to exhibit the coexistence phase of FM and SC, which properties have not been fully understood yet itinerant electrons are responsible to both phenomena in these materials and one of the important features is both phases cease at the same critical pressure [15]. In our case we shall see somewhat different features, but the similar aspects as well. 

MAGNETIC AND SUPERCONDUCTING PROPERTIES OF RARE EARTH BOROCARBIDES OF THE TYPE / Ni2B2C... 

In summary, there are various forms of the interplay of magnetism and superconductivity, which can be divided into competition and coexistence phenomena. In the elements C... 

The investigation of the whole family of these multilayer compounds would help to understand the mechanisms for superconductivity and magnetism in the quaternary rare-earth transition-metal borocarbides (Michor et al. 2001 Baggio-Saitovitch et al. 2001). However this report will be confined to magnetism and superconductivity in singlelayer / Ni2B2C compounds i.e. compounds with (/ C/N) Ni2B2 with n > 1 will not be considered further. 

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