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
  • [21] Superconducting field effect transistors with YBa2Cu3O7-x/SrTiO3/YBa2Cu3O7-x trilayer structure
    Nakamura, T
    Inada, H
    Iiyama, M
    PHYSICA C, 1998, 300 (1-2): : 93 - 97
  • [22] STRUCTURAL ORDERING OF OXYGEN VACANCIES AND SUPERCONDUCTING PROPERTIES OF THE COMPOUND YBA2CU3O7-X
    ARTSEBASHEVA, NG
    BATRAK, AG
    BENKO, VY
    ERENBURG, AI
    GRITSENKO, NV
    KOTOK, LA
    NECHIPORENKO, IN
    PROKHVATILOV, AI
    RAMAKAEVA, RF
    SMIRNOV, AI
    TEPLITSKAYA, TS
    TIKHENKO, EV
    SHEVTSOV, NI
    SHULGA, VM
    FIZIKA NIZKIKH TEMPERATUR, 1990, 16 (05): : 608 - 610
  • [23] Effect of zirconium diffusion on the microstructural and superconducting properties of YBa2Cu3O7-δ superconductors
    Guner, S. B.
    Gorur, O.
    Celik, S.
    Dogruer, M.
    Yildirim, G.
    Varilci, A.
    Terzioglu, C.
    JOURNAL OF ALLOYS AND COMPOUNDS, 2012, 540 : 260 - 266
  • [24] Deformation maps of YBa2Cu3O7-x superconductors
    Universidad de Sevilla, Sevilla, Spain
    Scr Metall Mater, 4 (621-626):
  • [25] ULTRASOUND EFFECT ON NI DIFFUSION IN YBA2CU3O7-X
    LYSENKO, VN
    DYAKIN, VV
    PHYSICA C, 1994, 235 : 1233 - 1234
  • [26] DEFORMATION MAPS OF YBA2CU3O7-X SUPERCONDUCTORS
    JIMENEZMELENDO, M
    DOMINGUEZRODRIGUEZ, A
    ROUTBORT, JL
    SCRIPTA METALLURGICA ET MATERIALIA, 1995, 32 (04): : 621 - 626
  • [27] Creep transients in YBa2Cu3O7-x superconductors
    Jimenez, J
    Garcia, F
    JimenezMelendo, M
    DominguezRodriguez, A
    PROCEEDINGS OF THE 13TH INTERNATIONAL CONFERENCE ON DEFECTS IN INSULATING MATERIALS - ICDIM 96, 1997, 239-2 : 439 - 442
  • [28] Melt processed YBa2Cu3O7-x superconductors
    Yanmaz, E
    JOURNAL OF ALLOYS AND COMPOUNDS, 1997, 260 (1-2) : 242 - 249
  • [29] Ultrasonic study of YBa2Cu3O7-x superconductors
    Takanohashi, T
    JOURNAL DE PHYSIQUE IV, 1996, 6 (C8): : 473 - 476
  • [30] SYNTHESIS AND CHARACTERIZATION OF YBA2CU3O7-X SUPERCONDUCTORS
    WEBER, WJ
    PEDERSON, LR
    PRINCE, JM
    DAVIS, KC
    EXARHOS, GJ
    MAUPIN, GD
    PRATER, JT
    FRYDRYCH, WS
    AKSAY, IA
    THIEL, BL
    SARIKAYA, M
    ADVANCED CERAMIC MATERIALS, 1987, 2 (3B): : 471 - 479
12345