Crystal and magnetic structure of Ca2RuO4:: Magnetoelastic coupling and the metal-insulator transition

被引:251
作者
Braden, M
Andre, G
Nakatsuji, S
Maeno, Y
机构
[1] Forschungszentrum Karlsruhe, INFP, D-76021 Karlsruhe, Germany
[2] Lab L Brillouin Spectrometrie Neutr, CE Saclay, F-91191 Gif Sur Yvette, France
[3] Kyoto Univ, Dept Phys, Kyoto 6068509, Japan
关键词
D O I
10.1103/PhysRevB.58.847
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The crystal and magnetic structure of Ca2RuO4 (CRO) has been studied by powder neutron diffraction. CRO was synthesized in two different modifications (stoichiometric and containing excess oxygen) whose crystal structures are, in spite of strong differences in the lattice constants, closely related. Both structures are derived from the ideal K2NiF4 structure type by a rotation of the RuO2 octahedra around the long axis, combined with a tilt around an axis lying in the RuO2 plane. The orientation of the tilt axis seems to distinguish the two room-temperature symmetries; the excess oygen compound is characterized by a smaller tilt angle and shorter Ru-O in-plane bond distances. Stoichiometric CRO undergoes large structural changes on cooling, though no symmetry change was detected. In contrast, the excess oxygen containing compound undergoes a first-order structural phase transition accompanied by a change from metallic to insulating behavior in the electric resistivity. Both compounds exhibit antiferromagnetic order below 110-150 K; for the stoichiometric sample, the onset of magnetic order is associated with several structural anomalies. [S0163-1829(98)04526-3].
引用
收藏
页码:847 / 861
页数:15
相关论文
共 65 条
  • [11] LOW-TEMPERATURE PHASE-TRANSITION AND SUPERCONDUCTIVITY IN (LA ND)-SR-CU-O
    BUCHNER, B
    BRADEN, M
    CRAMM, M
    SCHLABITZ, W
    SCHNELLE, W
    HOFFELS, O
    BRAUNISCH, W
    MULLER, R
    HEGER, G
    WOHLLEBEN, D
    [J]. PHYSICA C, 1991, 185 : 903 - 904
  • [12] COMPETITION BETWEEN STRUCTURAL AND SUPERCONDUCTING TRANSITION IN (LAND)-SR-CU-O
    BUCHNER, B
    CRAMM, M
    BRADEN, M
    BRAUNISCH, W
    HOFFELS, O
    SCHNELLE, W
    MULLER, R
    FREIMUTH, A
    SCHLABITZ, W
    HEGER, G
    KHOMSKII, DI
    WOHLLEBEN, D
    [J]. EUROPHYSICS LETTERS, 1993, 21 (09): : 953 - 958
  • [13] INFLUENCE OF OXYGEN NONSTOICHIOMETRY ON STRUCTURE AND MAGNETISM IN PR2NIO4+DELTA
    BUTTREY, DJ
    SULLIVAN, JD
    SHIRANE, G
    YAMADA, K
    [J]. PHYSICAL REVIEW B, 1990, 42 (07) : 3944 - 3951
  • [14] OXYGEN EXCESS IN LAYERED LANTHANIDE NICKELATES
    BUTTREY, DJ
    GANGULY, P
    HONIG, JM
    RAO, CNR
    SCHARTMAN, RR
    SUBBANNA, GN
    [J]. JOURNAL OF SOLID STATE CHEMISTRY, 1988, 74 (02) : 233 - 238
  • [15] Multiple magnetic phase transitions in single-crystal (Sr1-xCax)(3)Ru2O7 for 0<=X<=1.0
    Cao, G
    McCall, SC
    Crow, JE
    Guertin, RP
    [J]. PHYSICAL REVIEW B, 1997, 56 (09): : 5387 - 5394
  • [16] Ferromagnetism in Sr4Ru3O10: Relationship to other layered metallic oxides
    Cao, G
    McCall, SK
    Crow, JE
    Guertin, RP
    [J]. PHYSICAL REVIEW B, 1997, 56 (10) : R5740 - R5743
  • [17] Magnetic and transport properties of single-crystal Ca2RuO4: Relationship to superconducting Sr2RuO4
    Cao, G
    McCall, S
    Shepard, M
    Crow, JE
    Guertin, RP
    [J]. PHYSICAL REVIEW B, 1997, 56 (06) : R2916 - R2919
  • [18] MECHANISM FOR THE METAL-INSULATOR-TRANSITION IN SR2IR1-XRUXO4
    CARTER, SA
    BATLOGG, B
    CAVA, RJ
    KRAJEWSKI, JJ
    PECK, WF
    RUPP, LW
    [J]. PHYSICAL REVIEW B, 1995, 51 (23): : 17184 - 17187
  • [19] LOCALIZED-TO-ITINERANT ELECTRON TRANSITION IN SR2IR1-XRUXO4
    CAVA, RJ
    BATLOGG, B
    KIYONO, K
    TAKAGI, H
    KRAJEWSKI, JJ
    PECK, WF
    RUPP, LW
    CHEN, CH
    [J]. PHYSICAL REVIEW B, 1994, 49 (17): : 11890 - 11896
  • [20] LATTICE INSTABILITIES AND THE EFFECT OF COPPER-OXYGEN-SHEET DISTORTIONS ON SUPERCONDUCTIVITY IN DOPED LA2CUO4
    CRAWFORD, MK
    HARLOW, RL
    MCCARRON, EM
    FARNETH, WE
    AXE, JD
    CHOU, H
    HUANG, Q
    [J]. PHYSICAL REVIEW B, 1991, 44 (14): : 7749 - 7752