Direct evidence for ferroelectric polar distortion in ultrathin lead titanate perovskite films

被引：70
作者：
Despont, L [1 ]
Koitzsch, C
Clerc, F
Garnier, MG
Aebi, P
Lichtensteiger, C
Triscone, JM
Garcia de Abajo, FJ
Bousquet, E
Ghosez, P
机构：
[1] Univ Neuchatel, Inst Phys, CH-2000 Neuchatel, Switzerland
[2] Univ Geneva, DPMC, CH-1211 Geneva 4, Switzerland
[3] CSIC, UPV, EHU, Ctr Mixto, San Sebastian, Spain
[4] Univ Liege, Dept Phys, B-4000 Sart Tilman Par Liege, Belgium
来源：
PHYSICAL REVIEW B | 2006年 / 73卷 / 09期
关键词：
D O I：
10.1103/PhysRevB.73.094110
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
X-ray photoelectron diffraction is used to directly probe the intracell polar atomic distortion and tetragonality associated with ferroelectricity in ultrathin epitaxial PbTiO3 films. Our measurements, combined with ab initio calculations, unambiguously demonstrate noncentrosymmetry in films a few unit cells thick, imply that films as thin as three unit cells still preserve a ferroelectric polar distortion, and also show that there is no thick paraelectric dead layer at the surface.
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页数：6
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共 30 条
  • [1] Ferroelectricity at the nanoscale: Local polarization in oxide thin films and heterostructures
    Ahn, CH
    Rabe, KM
    Triscone, JM
    [J]. SCIENCE, 2004, 303 (5657) : 488 - 491
  • [2] Two-dimensional ferroelectric films
    Bune, AV
    Fridkin, VM
    Ducharme, S
    Blinov, LM
    Palto, SP
    Sorokin, AV
    Yudin, SG
    Zlatkin, A
    [J]. NATURE, 1998, 391 (6670) : 874 - 877
  • [3] Coexistence of antiferrodistortive and ferroelectric distortions at the PbTiO3(001) surface -: art. no. 035420
    Bungaro, C
    Rabe, KM
    [J]. PHYSICAL REVIEW B, 2005, 71 (03):
  • [4] Impact of misfit dislocations on the polarization instability of epitaxial nanostructured ferroelectric perovskites
    Chu, MW
    Szafraniak, I
    Scholz, R
    Harnagea, C
    Hesse, D
    Alexe, M
    Gösele, U
    [J]. NATURE MATERIALS, 2004, 3 (02) : 87 - 90
  • [5] X-ray photoelectron diffraction study of ultrathin PbTiO3 films
    Despont, L
    Lichtensteiger, C
    Clerc, F
    Garnier, MG
    de Abajo, FJG
    Van Hove, MA
    Triscone, JM
    Aebi, P
    [J]. EUROPEAN PHYSICAL JOURNAL B, 2006, 49 (02) : 141 - 146
  • [6] SYNTHESIS AND PROPERTIES OF YBA2CU3O7 THIN-FILMS GROWN INSITU BY 90-DEGREES OFF-AXIS SINGLE MAGNETRON SPUTTERING
    EOM, CB
    SUN, JZ
    LAIRSON, BM
    STREIFFER, SK
    MARSHALL, AF
    YAMAMOTO, K
    ANLAGE, SM
    BRAVMAN, JC
    GEBALLE, TH
    [J]. PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1990, 171 (3-4): : 354 - 382
  • [7] Fadley C. S., 1990, SYNCHROTRON RAD RES
  • [8] Direct structural determination in ultrathin ferroelectric films by analysis of synchrotron x-ray scattering measurements
    Fong, DD
    Cionca, C
    Yacoby, Y
    Stephenson, GB
    Eastman, JA
    Fuoss, PH
    Streiffer, SK
    Thompson, C
    Clarke, R
    Pindak, R
    Stern, EA
    [J]. PHYSICAL REVIEW B, 2005, 71 (14)
  • [9] Ferroelectricity in ultrathin perovskite films
    Fong, DD
    Stephenson, GB
    Streiffer, SK
    Eastman, JA
    Auciello, O
    Fuoss, PH
    Thompson, C
    [J]. SCIENCE, 2004, 304 (5677) : 1650 - 1653
  • [10] Microscopic model of ferroelectricity in stress-free PbTiO3 ultrathin films
    Ghosez, P
    Rabe, KM
    [J]. APPLIED PHYSICS LETTERS, 2000, 76 (19) : 2767 - 2769
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