Synthesis, characterization and physical properties of the superconducting ferromagnet RuSr2GdCu2O8

Lorenz, B.; Meng, R. L.; Cmaidalka, J.; Wang, Y.S.; Lenzi, J.; Xue, Y. Y.; Chu, C. W.

doi:10.1016/s0921-4534(01)00830-9

Cited by 40 publications

(42 citation statements)

References 15 publications

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“…While the model appears to be in disagreement with many research works, [12][13][14][15][16] the exact reason for SC in Y-Sr-Ru-O system is still uncertain. In order to gain additional insight into the superconducting properties of Cu-doped Sr 2 YRuO 6 ceramic compounds, we present the results of magnetic measurements and Raman-scattering investigation.…”

Section: Introductionmentioning

confidence: 59%

Origin of the superconductivity in the Y-Sr-Ru-O and Y-Sr-Cu-O systems

et al. 2007

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We report on the structural, magnetic, and Raman-scattering studies of double-perovskite structure Sr 2 YRu 1−x Cu x O 6−␦ systems made by systematic synthesis processes with various numbers of doping concentrations and sintering temperatures. We observed different behaviors resulting from the different thermal treatments. In particular, superconductivity in Cu-doped Sr 2 YRuO 6 has been observed only for partially melted ceramic materials. We show that superconductivity is associated with the 1:2:3 phase ͑YSr 2 Cu 3 O t ͒, similar to that of Y-Sr-Cu-O samples sintered at high temperature.

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Section: Introductionmentioning

confidence: 59%

Origin of the superconductivity in the Y-Sr-Ru-O and Y-Sr-Cu-O systems

et al. 2007

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“…The superconducting transition as observed in resistivity or zero-field cooling magnetization measurements proceeds in two steps, the intra-grain transition is followed by an inter-grain transition (phase coherence across the grain boundaries) at lower temperature. Both transitions can be separated in ac-susceptibility or transport measurements [141,142]. It is essential to focus the high-pressure investigation onto the pressure effects on the bulk superconducting properties and the intra-grain superconducting T c .…”

Section: Competition Of Superconducting and Magnetic Orders In Supercmentioning

confidence: 99%

High Pressure Effects on Superconductivity

Lorenz

Chu

2005

Frontiers in Superconducting Materials

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The review is devoted to a discussion of the effects of high pressure imposed on superconducting materials. Low-temperature superconductors, high-temperature superconducting cuprates, and some unconventional superconducting compounds are investigated. Experimental as well as theoretical results regarding the pressure effects on Tc and other interesting properties are summarized.Comment: To be published in: "Frontiers in Superconducting Materials", Edt. A. Narlikar, Springer Verla

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“…However, this material still presents several obscure points concerning its preparation and characterization, and it turns out that identical samples are superconducting or not depending on some details during the preparation process [4]. The ferromagnetism is strongly correlated with the increase (decrease) of oxygen vacancies and the stoichiometry of oxygen has been considered as a possible cause for the non-uniformity in the properties of the samples, but still it has a great variety of studies regarding the influence of the preparation in the oxygen stoichiometry [5].…”

Section: Introductionmentioning

confidence: 99%