Superconducting and magnetic properties of Bi2Sr2Ca1-xYxCu2Oy (0≦x≦1)

Yoshizaki, Ryozo; Saito, Y.; Abe, Yoshihito; Ikeda, Hiroshi

doi:10.1016/0921-4534(88)90045-7

Cited by 75 publications

(7 citation statements)

References 4 publications

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“…Thus, the conduction in the non-metallic region proceeds through 3-Dimensional VRH. Similar metal to insulator transition was observed in Bi 2 Sr 2 Ca 1-x Y x Cu 2 O 8+x at x>0.5 [15,16]. Substituting Y(III) in Ca(II) site causes a lowering of carrier concentration.…”

Section: Charged Particle Irradiation Effects On Htscsupporting

confidence: 54%

“…In most cases (both proton and α-irradiation on Bi-2212 and Bi-2223), there are increases of transition widths (ΔTc). The resistivity changed from metallic to insulating behavior by α-irradiation at a dose of 1x10 16 α/cm 2 and higher for both Bi-2212 and Bi-2223. The nonlinear behavior of resistivity is indicative of localization of charge carriers caused by irradiation induced disorder.…”

Section: Charged Particle Irradiation Effects On Htscmentioning

confidence: 99%

“…The peak of Tc(R=0) corresponds to a dose of ~6x10 15 α/cm 2 and the equivalent oxygen content is 0.10. 15 111.0 122.0 0.100 2x10 15 108.0 122.0 0.100 3x10 15 105.8 121.8 0.100 4x10 15 103.6 121.6 0.096 1x10 16 64.0 94.0 0.096 Table I. Variation of Tc, Excess Oxygen and other parameters with dose for polycrystalline Bi-2212 and Bi-2223 irradiated with 40MeV α-particles.…”

Section: Charged Particle Irradiation Effects On Htscmentioning

confidence: 99%

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Charged Particle Irradiation Studies on Bismuth Based High Temperature Superconductors and MgB2: a comparative study

Bandyopadhyay¹

2010

Superconductor

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Section: Charged Particle Irradiation Effects On Htscsupporting

confidence: 54%

Section: Charged Particle Irradiation Effects On Htscmentioning

confidence: 99%

Section: Charged Particle Irradiation Effects On Htscmentioning

confidence: 99%

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Charged Particle Irradiation Studies on Bismuth Based High Temperature Superconductors and MgB2: a comparative study

Bandyopadhyay¹

2010

Superconductor

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“…It has been found that the substitution of Ca 2+ by y3+ in Bi2Sr2Cal_xYxCu20y (BSCI-xYxCO) introduces a reduction of the hole carrier concentration [8,20] and Tc decreases with increasing x value. A superconducting-non-superconducting transition takes place when x = 0.3-0.6 [ 1,3,4,[6][7][8]13,16,18,20]. In these earlier studies, the decrease or disappearance of Tc was attributed to a redistribution of the excess oxygen or the valence change of Cu ions.…”

Section: Introductionmentioning

confidence: 93%

Room temperature (2a × 2b) superstructure formed in Sr-substituted Bi2(Sr1.6Y0.4)CaCu2Oy single crystals

Zhang

Tendeloo

et al. 1997

Physica C: Superconductivity

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“…From the crystallographic data we may propose the existence of a pure perovskite-phase within the range [0.30 ≤ x ≤ 0.50]; consequently, our magnetic measurements were limited to this region. However, as we will see latter, minute amounts of the very stable compound Y 2 Cu 2 O 5 , usually present in oxide materials like bismuth or yttrium cuprates [11][12][13], may still be present in this series. Such impurities were completely undetectable by XRD techniques, meaning that its content should be less than 3-4 wt.% of the overall sample.…”

Section: +mentioning

confidence: 99%

Propiedades magnéticas de la manganita Y(Cu,Mn)O<sub>3</sub> sustituida en el sitio del manganeso

Peña¹,

Gutiérrez²,

Durán³

et al. 2004

Bol. Soc. Esp. Ceram. Vidr.

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The magnetic properties of the solid solution YCu x Mn 1-x O 3 have been investigated in the whole range of possible substitutions 0.30 ≤ x(Cu) ≤ 0.50. The χ a.c. data showed the presence of minute amounts, undetectable by X-ray diffraction, of the antiferromagnetic Y 2 Cu 2 O 5 phase, which did not interfere with the overall magnetic behavior of the solid solution. The total effective moment of the paramagnetic state decreases continuously with x(Cu). The average moment per Mn ion was estimated after subtraction of the copper contribution, giving approximately 4.4 µ B, independent of the Cu concentration ; this value corresponds to the magnetic moment expected for 50 % Mn 3+ and 50 % Mn . A paramagnetic-to-antiferromagnetic transition is observed at T Néel = 21 K, also compositional-independent. The low temperature state, studied by ZFC/FC cycles and M(H) loops, reinforce the idea of antiferromagnetic interactions in these compounds. A very small ferromagnetic component giving rise to low coercive fields of the order of 800 Oe, was present for all Cu concentrations. Additional nuclear powder diffraction measurements show no specific magnetic structure, suggesting short range interactions. Keywords: perovskites, magnetic exchange, antiferromagnetism, substitution effects Propiedades magnéticas de la manganita Y(Cu,Mn)O 3 sustituída en el sitio del manganesoSe han investigado las propiedades magnéticas de la solución sólida YCu x Mn 1-x O 3 para todo el rango de posibles sustituciones 0.30 ≤ x(Cu) ≤ 0.50. Las medidas de susceptibilidad χ a.c. señalan la presencia de ínfimas cantidades de la fase antiferromagnética Y 2 Cu 2 O 5 , la que no modifica las propiedades globales de la solucion sólida. El momento magnético total del estado paramagnético decrece monótonamente con x(Cu). El momento magnético promedio por ion Mn fue estimado después de sustraer la contribución del cobre, dando un valor aproximado de 4.4 µ B, independiente de la concentración en cobre ; este valor corresponde al momento magnético esperado para 50 % Mn 3+ y 50 % Mn 4+. Una transición paramagnética hacia un estado antiferromagnético es observada a T Néel = 21 K, independiente de la composición. Los estudios a bajas temperaturas, realizados mediante ciclos ZFC/FC y de magnetización M(H), corroboran la idea de interacciones antiferromagnéticas en estos compuestos. Una pequeña componente ferromagnética es observada en los ciclos de magnetización realizados a 5K, indicando que el estado ordenado es principalmente de tipo antiferromagnético, con una componente inclinada despreciable, la que da lugar a un campo coercitivo muy pequeño (aprox. 800 Oe). Medidas preliminares por difracción de neutrones no indican ninguna estructura magnética específica, eliminando la posibilidad de interacciones de largo alcance. Palabras clave: perovskitas, interacciones de canje, antiferromagnetismo, efectos de la sustitución

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Superconducting and magnetic properties of Bi2Sr2Ca1-xYxCu2Oy (0≦x≦1)

Cited by 75 publications

References 4 publications

Charged Particle Irradiation Studies on Bismuth Based High Temperature Superconductors and MgB2: a comparative study

Charged Particle Irradiation Studies on Bismuth Based High Temperature Superconductors and MgB2: a comparative study

Room temperature (2a × 2b) superstructure formed in Sr-substituted Bi2(Sr1.6Y0.4)CaCu2Oy single crystals

Propiedades magnéticas de la manganita Y(Cu,Mn)O<sub>3</sub> sustituida en el sitio del manganeso

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