Structural distortion in superconducting Ba1-xKxBiO3

被引：50
作者：
Braden, M
Reichardt, W
Elkaim, E
Lauriat, JP
Shiryaev, S
Barilo, SN
机构：
[1] Forschungszentrum Karlsruhe, IFP, D-76021 Karlsruhe, Germany
[2] CEA, CNRS, Leon Brillouin Lab, F-91191 Gif Sur Yvette, France
[3] Univ Paris Sud, LURE, F-91405 Orsay, France
[4] Acad Sci, Inst Phys Solids & Semicond, Minsk 220072, BELARUS
来源：
PHYSICAL REVIEW B | 2000年 / 62卷 / 10期
关键词：
D O I：
10.1103/PhysRevB.62.6708
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The structure of superconducting Ba1-xKxBiO3 (BKBO) has been studied by neutron and synchrotron diffraction on single crystalline and on powder samples. In contrast to the phase diagram reported by several groups we find a long range structural distortion persisting in the K-concentration range of superconductivity. The distortion is characterized by a tilt of the BiO6 octahedra around the cubic [001] direction, space group 14/mcm, so far not observed for any BKBO compound. The mixing of light monovalent K atoms with the heavier two-valent Ba atoms causes strong structural disorder, in particular for the octahedron tilt. This disorder is simulated within a harmonic lattice dynamical model.
引用
收藏
页码：6708 / 6715
页数：8
相关论文
共 50 条
  • [21] SUPERCONDUCTIVITY MECHANISM OF BA1-XKXBIO3
    CHEN, B
    YU, CF
    FANG, H
    JIAO, ZK
    ZHANG, QR
    PHYSICA C, 1995, 250 (3-4): : 367 - 374
  • [22] TUNNELING SPECTROSCOPY IN BA1-XKXBIO3
    ZASADZINSKI, JF
    TRALSHAWALA, N
    TIMPF, J
    HINKS, DG
    DABROWSKI, B
    MITCHELL, AW
    RICHARDS, DR
    PHYSICA C, 1989, 162 : 1053 - 1054
  • [23] STRUCTURAL PHASE-DIAGRAM OF THE BA1-XKXBIO3 SYSTEM
    PEI, SY
    JORGENSEN, JD
    HINKS, DG
    DABROWSKI, B
    RICHARDS, DR
    MITCHELL, AW
    ZHENG, Y
    NEWSAM, JM
    SINHA, SK
    VAKNIN, D
    JACOBSON, AJ
    PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1989, 162 : 556 - 557
  • [24] TUNNELING SPECTROSCOPY IN BA1-XKXBIO3
    DYNES, RC
    SHAFIFI, F
    PARGELLIS, A
    HELLMAN, ES
    MILLER, B
    HARTFORD, E
    ROSAMILIA, J
    PHYSICA C, 1991, 185 : 234 - 240
  • [25] ON THE SUPERCONDUCTING MECHANISM OF K3C60 AND BA1-XKXBIO3
    ZHANG, LY
    ZHOU, YS
    JIN, GH
    ACTA PHYSICA SINICA-OVERSEAS EDITION, 1994, 3 (11): : 843 - 848
  • [26] Synthesis of superconducting Ba1-xKxBiO3 by a modified molten salt process
    Liu, SF
    Fu, WT
    MATERIALS RESEARCH BULLETIN, 2001, 36 (7-8) : 1505 - 1512
  • [27] SYNTHESIS OF HIGH-DENSITY BA1-XKXBIO3 SUPERCONDUCTING SAMPLES
    HINKS, DG
    MITCHELL, AW
    ZHENG, Y
    RICHARDS, DR
    DABROWSKI, B
    APPLIED PHYSICS LETTERS, 1989, 54 (16) : 1585 - 1587
  • [28] Paramagnetic Meissner effect in superconducting single crystals of Ba1-xKxBiO3
    Kim, HT
    Minami, H
    Schmidbauer, W
    Hodby, JW
    Iyo, A
    Iga, F
    Uwe, H
    JOURNAL OF LOW TEMPERATURE PHYSICS, 1996, 105 (3-4) : 557 - 562
  • [29] Magnetotunneling and magnetic pair-breaking in superconducting Ba1-xKxBiO3
    Szabó, P
    Samuely, P
    Jansen, AGM
    Wyder, P
    PHYSICA B, 2000, 284 : 977 - 978
  • [30] Superconductivity in the Ba1-xKxBiO3 system
    Baranov, AN
    Kim, DC
    Kim, JS
    Kang, HR
    Park, YW
    Pshirkov, JS
    Antipov, EV
    PHYSICA C, 2001, 357 : 414 - 417
12345