Oxygen desorption activation energy of YBa2Cu3O7-x obtained by thermogravimetry with different heating rates

被引：9
作者：
Zhu, ZL
Yang, DL
Guo, YQ
Liu, QQ
Gao, ZS
Hu, X [1 ]
机构：
[1] Zhengzhou Univ, Dept Phys, Zhengzhou 450052, Peoples R China
[2] Zhengzhou Univ, Phys Mat Lab, Zhengzhou 450052, Peoples R China
[3] Zhengzhou Univ, Dept Chem, Zhengzhou 450052, Peoples R China
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2002年 / 383卷 / 1-2期
关键词：
YBa2Cu3O7-x; thermal analysis; activation energy;
D O I：
10.1016/S0921-4534(02)01318-7
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The oxygen desorption activation energy of a YBa2Cu3O7-x specimen was determined by thermogravimetry (TG) and differential thermogravimetry (DTG) curves with different heating rates. It shows that there are clear evidences that the behavior of TG, DTG, and desorption activation energy have some relations with the oxygen stoichiometry of the specimen when its temperature changes from 500 to 800 degreesC. In the orthorhombic phase, the desorption activation energy has an obvious increase with the increase of temperature, while it varies smoothly in the tetragonal phase as the temperature increases. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：169 / 174
页数：6
相关论文
共 14 条
  • [1] ATOMISTIC STUDY OF DEFECTS IN YBA2CU3O7
    BAETZOLD, RC
    [J]. PHYSICAL REVIEW B, 1990, 42 (01): : 56 - 66
  • [2] THEORY OF OXYGEN DIFFUSION IN THE YBA2CU3O7-X SUPERCONDUCTING COMPOUND
    CHOI, JS
    SARIKAYA, M
    AKSAY, IA
    KIKUCHI, R
    [J]. PHYSICAL REVIEW B, 1990, 42 (07): : 4244 - 4254
  • [3] STABILITY ANALYSIS OF SPECIAL-POINT ORDERING IN THE BASAL-PLANE IN YBA2CU3O7-DELTA
    DEFONTAINE, D
    WILLE, LT
    MOSS, SC
    [J]. PHYSICAL REVIEW B, 1987, 36 (10): : 5709 - 5712
  • [4] STUDY ON CHEMICAL DIFFUSION OF OXYGEN IN BA2YCU3O7-DELTA
    KISHIO, K
    SUZUKI, K
    HASEGAWA, T
    YAMAMOTO, T
    KITAZAWA, K
    FUEKI, K
    [J]. JOURNAL OF SOLID STATE CHEMISTRY, 1989, 82 (02) : 192 - 202
  • [5] THE INFLUENCE OF OXYGEN VARIATION ON THE CRYSTAL-STRUCTURE AND PHASE-COMPOSITION OF THE SUPERCONDUCTOR YBA2CU3O7-X
    MANTHIRAM, A
    SWINNEA, JS
    SUI, ZT
    STEINFINK, H
    GOODENOUGH, JB
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1987, 109 (22) : 6667 - 6669
  • [6] A model of oxygen ordering in YBa2Cu3Ox.: Fragmented-chain structure at 6.5 < x < 7
    Matic, VM
    Milic, M
    Lazarov, ND
    [J]. PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2000, 339 (01): : 27 - 36
  • [7] OXYGEN IN-DIFFUSION PROCESSES IN TETRAGONAL YBA2CU3O7-X OXIDE
    OTTAVIANI, G
    NOBILI, C
    NAVA, F
    AFFRONTE, M
    MANFREDINI, T
    MATACOTTA, FC
    GALLI, E
    [J]. PHYSICAL REVIEW B, 1989, 39 (13): : 9069 - 9073
  • [8] ANISOTROPY OF OXYGEN-TRANSPORT IN YBA2CU3O7 - THE ROLE OF THE [1/2, B, 0] TUNNELS
    RONAY, M
    NORDLANDER, P
    [J]. PHYSICA C, 1988, 153 : 834 - 835
  • [9] TRACER DIFFUSION OF OXYGEN IN YBA2CU3O7-DELTA
    ROTHMAN, SJ
    ROUTBORT, JL
    BAKER, JE
    [J]. PHYSICAL REVIEW B, 1989, 40 (13): : 8852 - 8860
  • [10] ANISOTROPY OF OXYGEN TRACER DIFFUSION IN SINGLE-CRYSTAL YBA2CU3O7-DELTA
    ROTHMAN, SJ
    ROUTBORT, JL
    WELP, U
    BAKER, JE
    [J]. PHYSICAL REVIEW B, 1991, 44 (05): : 2326 - 2331
12