THE EXTENT OF CRITICAL-TEMPERATURE VARIATIONS OF THE SUPERCONDUCTING PHASES IN THE BI-PB-SR-CA-CU-O SYSTEM

被引：10
|
作者：
SARKAR, AK
MAARTENSE, I
机构：
[1] University of Dayton, Research Institute, 300 College Park, Dayton
来源：
SOLID STATE COMMUNICATIONS | 1991年 / 77卷 / 02期
关键词：
D O I：
10.1016/0038-1098(91)90870-2
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Bulk specimens having nominal composition of Bi2-xPb(x)Sr2Ca2Cu3O(y) (x = 0, 0.2, and 0.4) were subjected to various annealing and post-sinter cooling treatments to alter the oxygen stoichiometries and the granular critical temperature (T(c)) values of the superconducting phases. T(c) was found to vary from 53 K to 93 K in the 2212 phase and from 100 K to 108 K in the 2223 phase, depending on the processing. The shifts in the T(c) values of the two phases were not always in opposite directions as reported by others. Inferior intergranular coupling resulted when Ca2PbO4 precipitated into the grain boundaries during oxygen cooling, if the lead content was high (x = 0.4). The implications of these processing parameters on the bulk superconductive properties of this system are discussed.
引用
收藏
页码：121 / 124
页数：4
相关论文
共 50 条
  • [1] The Effect of Boron on Equilibrium of Superconducting Phases in Bi-Pb-Sr-Ca-Cu-O System
    Starrynets, S. M.
    JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, 2024, 37 (5-7) : 1079 - 1088
  • [2] EFFECTS OF SR/CA RATIO AND CUO CONTENT OF THE SUPERCONDUCTING PHASES IN THE BI-PB-SR-CA-CU-O SYSTEM
    XI, ZP
    ZHOU, L
    JI, CL
    WU, XZ
    JOURNAL OF SUPERCONDUCTIVITY, 1991, 4 (06): : 455 - 459
  • [3] The Superconducting Phases in Bi-Sr-Ca-Cu-O and Bi-Pb-Sr-Ca-Cu-O Superconductors at High Temperatures
    He Qing
    Yu Dingan
    Chang Shian
    Zhang Hong
    Sun Xu General Research Institute for Non-ferrous Metals
    RareMetals, 1989, (01) : 50 - 51
  • [4] CU VALENCE STATES IN SUPERCONDUCTING BI-PB-SR-CA-CU-O SYSTEM
    LIU, HK
    DOU, SX
    SONG, KH
    SORRELL, CC
    EASTERLING, KE
    JONES, WK
    JOURNAL OF SOLID STATE CHEMISTRY, 1990, 87 (02) : 289 - 297
  • [5] INDIUM DOPING IN THE BI-PB-SR-CA-CU-O SUPERCONDUCTING SYSTEM
    NKUM, RK
    PUNNETT, A
    UMMAT, PK
    DATARS, WR
    PHYSICA C, 1992, 194 (3-4): : 321 - 326
  • [6] SUBSTITUTION OF SN IN THE SUPERCONDUCTING BI-PB-SR-CA-CU-O SYSTEM
    NKUM, RK
    DATARS, WR
    PHYSICA C, 1992, 190 (04): : 465 - 470
  • [7] Critical current density of Bi-Pb-Sr-Ca-Cu-O superconducting ceramics
    Matsuda, Motohide
    Iwai, Yutaka
    Takata, Masasuke
    Ishii, Mamoru
    Yamashita, Tsutomu
    Koinuma, Hideomi
    Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, 1988, 27 (09): : 1650 - 1651
  • [8] DEGRADATION BY MECHANICAL GRINDING AND RECOVERY BY ANNEALING IN THE SUPERCONDUCTING PHASES OF THE BI-PB-SR-CA-CU-O SYSTEM
    KANAI, T
    KAMO, T
    MATSUDA, SP
    JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1990, 29 (03): : L412 - L415
  • [9] Degradation by mechanical grinding and recovery by annealing in the superconducting phases of the Bi-Pb-Sr-Ca-Cu-O system
    Kanai, Tsuneyuki, 1600, (29):
  • [10] EFFECTS OF VANADIUM ON THE SUPERCONDUCTING PROPERTIES OF BI-PB-SR-CA-CU-O SYSTEM
    MINH, NV
    PHUC, NX
    HONG, LV
    NAM, DNH
    BAJOREK, A
    PHYSICA C, 1994, 235 : 1435 - 1436
12345