Superconductivity and magnetic order in thallium-based cuprates

A series of polycrystalline samples of system TlA 2RCu 2O 7− x (A=Sr, Ba; R=RE, Y and Ca) with perovskite-like 1212-structure has been synthesized and investigated by magnetic and transport measurements in the temperature range of 4.2–300 K. The measurements revealed that along with high-temperature...

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Published inPhysica. B, Condensed matter Vol. 294; pp. 367 - 370
Main Authors Khlybov, E.P., Kostyleva, I.E., Nizhankovskii, V.I., Palewski, T., Warchulska, J., Nenkov, K.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 2001
Subjects
Magnetic order
Perovskite-like cuprates
Phase separation
Superconductivity
Perovskite-like cuprates
Magnetic order
Phase separation
Superconductivity
75.50.Dd
74.72.Fq
74.25.Ha
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Summary:A series of polycrystalline samples of system TlA 2RCu 2O 7− x (A=Sr, Ba; R=RE, Y and Ca) with perovskite-like 1212-structure has been synthesized and investigated by magnetic and transport measurements in the temperature range of 4.2–300 K. The measurements revealed that along with high-temperature superconductivity, some of these compounds exhibit spontaneous antiferromagnetism, field-induced antiferromagnetism or ferromagnetism. Different types of magnetic ordering have been found depending on rare-earth ions located in R position. The phenomenon of phase separation to magnetic and superconducting phases has probably been observed in a number of compounds.
ISSN:0921-4526
1873-2135
DOI:10.1016/S0921-4526(00)00679-7