The effect of Gd diffusion-doped on structural and superconducting properties of YBa2Cu3O7-x superconductors

被引：0
|
作者：
Karadeniz Technical University, Faculty of Arts and Sciences, Department of Physics, Trabzon, Turkey [1 ]
不详 [2 ]
机构：
来源：
Journal of Alloys and Compounds | 2007年 / 433卷 / 1-2期
关键词：
The effect of Gd diffusion on structural evolution and superconducting properties of YBa2Cu3O7-x (Y123) prepared in the bulk polycrystalline form were studied. The gadolinium (Gd) diffusion in superconducting Y123 ceramic has been studied over the temperature range of 600-900 °C by energy dispersive X-ray fluorescence technique (EDXRF). The temperature dependence of Gd diffusion coefficient in grains (D1) and over the grain boundaries (D2) are described by the relations: D1 = 8.9 × 10-6 exp(-1.25/kT) and D2 = 2.3 × 10-5 exp(-1.09/kT). For the Gd diffused-doped samples; magnetization and resistivity measurements show that the critical transition temperature; Tc; increased from 88 to 91 K and the critical current density; Jc; which was calculated from M-H loops taken at 77 K; increased from 55 to 122 A cm-2 in comparison with those of undoped Y123. The possible reasons for the observed increases in Tc and Jc due to Gd diffusion were discussed. In addition; magnetic hysteresis curves of the Gd900; Gd800; Gd700 and undoped Y123 are presented for temperature of 5 K. It was found that the hysteresis is enhanced by the Gd diffusion. Such enhancement; which is considered to represent a characteristic strength of intergrain coupling; is more clearly recognized when critical current densities are compared. © 2006 Elsevier B.V. All rights reserved;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Journal article (JA)
引用
收藏
页码：46 / 52
相关论文
共 50 条
  • [1] The effect of Gd diffusion-doped on structural and superconducting properties of YBa2Cu3O7-x superconductors
    Ozturk, K.
    Celik, S.
    Cevik, U.
    Yanmaz, E.
    JOURNAL OF ALLOYS AND COMPOUNDS, 2007, 433 (1-2) : 46 - 52
  • [2] Investigation of some superconducting properties of ytterbium diffusion-doped YBa2Cu3O7-x superconductors
    Oeztuerk, K.
    Celik, S.
    Cevik, U.
    Yanmaz, E.
    JOURNAL OF ALLOYS AND COMPOUNDS, 2008, 456 (1-2) : 34 - 39
  • [3] Investigation of some physical properties of silver diffusion-doped YBa2Cu3O7-x superconductors
    Görür, O
    Terzioglu, C
    Varilci, A
    Altunbas, M
    SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2005, 18 (09): : 1233 - 1237
  • [4] STRUCTURAL AND SUPERCONDUCTING PROPERTIES OF OXYGEN-DEFICIENT AND DOPED YBA2CU3O7-X
    JORGENSEN, JD
    HINKS, DG
    SHAKED, H
    DABROWSKI, B
    VEAL, BW
    PAULIKAS, AP
    NOWICKI, LJ
    CRABTREE, GW
    KWOK, WK
    UMEZAWA, A
    NUNEZ, LH
    DUNLAP, BD
    SEGRE, CU
    KIMBALL, CW
    PHYSICA B-CONDENSED MATTER, 1989, 156 : 877 - 879
  • [5] OXYGEN DIFFUSION IN THE SUPERCONDUCTING YBA2CU3O7-X
    XIE, XM
    CHEN, TG
    WU, ZL
    PHYSICAL REVIEW B, 1989, 40 (07): : 4549 - 4556
  • [6] EFFECT OF MILLING MEDIUM ON THE PROPERTIES OF SUPERCONDUCTING YBA2CU3O7-X
    DOU, SX
    LIU, HK
    BOURDILLON, AJ
    ZHOU, JP
    TAN, NX
    SUN, XY
    SORRELL, CC
    JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1988, 71 (07) : C329 - C331
  • [7] EFFECT OF ANNEALING IN OXYGEN ON THE SUPERCONDUCTING PROPERTIES OF YBA2CU3O7-X
    POLLERT, E
    HEJTMANEK, J
    MATEJKOVA, L
    NEVRIVA, M
    TRISKA, A
    VASEK, P
    ZEMANOVA, D
    PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1988, 156 (04): : 533 - 538
  • [8] The effect of LiOH addition to the superconducting properties of YBa2Cu3O7-x
    Sandu, V
    Jaklovszky, J
    Cimpoiasu, E
    Bunescu, MC
    JOURNAL OF SUPERCONDUCTIVITY, 1997, 10 (03): : 231 - 239
  • [9] The effect of LiOH addition to the superconducting properties of YBa2Cu3O7-x
    V. Sandu
    J. Jaklovszky
    Elena Gmpoiaso
    Mihaela Carmen Bunescu
    Journal of Superconductivity, 1997, 10 : 231 - 239
  • [10] Microstructure and properties of K2O doped superconducting YBa2Cu3O7-x
    Tartaj, J., 1600, Chapman & Hall Ltd, London, United Kingdom (29):
12345