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Magnetic Properties of Pb2Sr2Eu1-xCaxCu308+z Superconductors

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Abstract

X-ray diffraction and magnetic measurements using a SQUID magnetometer have been performed on the title compounds for 0 ≤ x ≤ 0.9. For 0 ≤ x ≤ 0.5, we have single phase materials. However, a small percentage of an impurity phase is noticed in the x = 0.7 sample, and the x = 0.9 sample is clearly not a single phase material. The transition temperature, the diamagnetic-shielding effect, and the Meissner-effect increase as x becomes larger. We have obtained, approximately, Hc1 ≤ 700 oe and Hc2 ≥ 800 k0e.

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Authors and Affiliations

  1. Department of Physics and Astronomy, Michigan State University, East Lansing, MI, 48824-1116, USA

    C. D. Nelson & W. P. Pratt Jr.

  2. GMI Engineering and Mangement Institute, Flint, MI, 48504, USA

    P. P. Vaishnava

Authors
  1. C. D. Nelson
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  2. W. P. Pratt Jr.
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  3. P. P. Vaishnava
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Work supported by Center for Fundamental Materials Research of Michigan State University

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Nelson, C.D., Pratt, W.P. & Vaishnava, P.P. Magnetic Properties of Pb2Sr2Eu1-xCaxCu308+z Superconductors. MRS Online Proceedings Library 169, 1077–1080 (1989). https://doi.org/10.1557/PROC-169-1077

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