ACTA

Superconducting and Magnetic Phases with 1212-Type of Structure

E.P. Khlybov^a,b, I.E. Kostyleva^b, K. Nenkov^a,c, V.I. Nizhankovskii^a, T. Palewski^a and J. Warchulska^a
^a International Laboratory of High Magnetic Fields and Low Temperatures, Gajowicka 95, 53-421, Wrocław, Poland
^b Institute of High Pressure Physics, 142092 Troitsk Moscow reg, Russia
^c Institut fur Festkörper- und Werkstofforschung Dresden, P.O.Box 270016, 01171 Dresden, Germany

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Studies of magnetic and transport properties of the 1212 compounds MA'₂A''Cu₂O_7-x (M 3D Al or Tl; A'= Sr or Ba; A''= RE, Y, and Ca) revealed a number of interesting magnetic phenomena. Apart from high-temperature superconductivity, these compounds exhibit spontaneous antiferromagnetism, field induced antiferromagnetism or ferromagnetism. The different magnetic orders and superconductivity may be realized in the same compound as a result of the phase separation.

DOI: 10.12693/APhysPolA.97.369
PACS numbers: 74.25.Ha, 74.72.Jt