Surface phase transitions in BiFeO3 below room temperature

被引：74

作者：

Jarrier, R. ^{[1
,2
]}

Marti, X. ^{[3
]}

Herrero-Albillos, J. ^{[4
,5
]}

Ferrer, P. ^{[6
,7
]}

Haumont, R. ^{[1
,2
]}

Gemeiner, P. ^{[2
]}

Geneste, G. ^{[2
]}

Berthet, P. ^{[1
]}

Schuelli, T. ^{[8
]}

Cevc, P. ^{[9
]}

Blinc, R. ^{[9
]}

Wong, Stanislaus S. ^{[10
,11
]}

Park, Tae-Jin ^{[10
,12
]}

Alexe, M. ^{[13
]}

Carpenter, M. A. ^{[14
]}

Scott, J. F. ^{[15
]}

Catalan, G. ^{[16
,17
]}

Dkhil, B. ^{[2
]}

机构：

[1] Univ Paris 11, Lab Physicochim Etat Solide, ICMMO, CNRS UMR 8182, F-91405 Orsay, France

[2] Ecole Cent Paris, Lab Struct Proprietes & Modelisat Solides, CNRS UMR8580, F-92295 Chatenay Malabry, France

[3] Charles Univ Prague, Dept Phys, Prague, Czech Republic

[4] Helmholtz Zentrum Berlin Materialien & Energie GM, D-12489 Berlin, Germany

[5] Ctr Univ Def, E-50090 Zaragoza, Spain

[6] ESRF, SpLine BM25, Grenoble, France

[7] Inst Ciencia Mat Madrid ICMM CSIC, Madrid, Spain

[8] ESRF Beamline ID01, Grenoble, France

[9] Jozef Stefan Inst, Ljubljana 1000, Slovenia

[10] SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA

[11] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA

[12] Korea Atom Energy Res Inst, Taejon 305353, South Korea

[13] Max Planck Inst Microstruct Phys, D-06120 Halle, Saale, Germany

[14] Univ Cambridge, Dept Earth Sci, Cambridge CB2 3EQ, England

[15] Univ Cambridge, Cavendish Lab, Dept Phys, Cambridge CB3 0HE, England

[16] Univ Autonoma Barcelona, ICREA, Bellaterra 08193, Spain

[17] Univ Autonoma Barcelona, CSIC ICN CIN2, Bellaterra 08193, Spain

来源：

PHYSICAL REVIEW B | 2012年 / 85卷 / 18期

关键词：

MAGNETIC-PROPERTIES; GROWTH;

D O I：

10.1103/PhysRevB.85.184104

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We combine a wide variety of experimental techniques to analyze two heretofore mysterious phase transitions in multiferroic bismuth ferrite at low temperature. Raman spectroscopy, resonant ultrasound spectroscopy, electron paraelectric resonance, x-ray lattice constant measurements, conductivity and dielectric response, and specific heat and pyroelectric data have been collected for two different types of samples: single crystals and, in order to maximize surface/volume ratio to enhance surface phase transition effects, BiFeO3 nanotubes were also studied. The transition at T = 140.3Kis shownto be a surface phase transition, with an associated sharp change in lattice parameter and charge density at the surface. Meanwhile, the 201 K anomaly appears to signal the onset of glassy behavior.

引用

页数：10

共 66 条

[41] Melting of Bi Sublattice in Nanosized BiFeO3 Perovskite by Resonant X-Ray Diffraction [J].