Atomic scale characterization of oxygen vacancy segregation at SrTiO3 grain boundaries

被引：73

作者：

Klie, RF ^{[1
]}

Browning, ND ^{[1
]}

机构：

[1] Univ Illinois, Dept Phys, Chicago, IL 60607 USA

来源：

APPLIED PHYSICS LETTERS | 2000年 / 77卷 / 23期

关键词：

D O I：

10.1063/1.1330572

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have examined the atomic structure, composition, and bonding at a nominally undoped 58 degrees [001] tilt grain boundary in SrTiO3 in order to develop an understanding of the control that the grain boundary plane exerts over the bulk properties. Room temperature and in situ heating experiments show that there is a segregation of oxygen vacancies to the grain boundary that is increased at elevated temperatures and is independent of the cation arrangement. These measurements provide direct support for recent experimental and theoretical predictions that nonstoichiometry, and in particular oxygen vacancies, are responsible for the widely observed grain boundary properties. (C) 2000 American Institute of Physics. [S0003-6951(00)05549-2].

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页码：3737 / 3739

页数：3

相关论文

共 17 条

[1] Direct experimental determination of the atomic structure at internal interfaces [J].

Browning, ND ;

Pennycook, SJ .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 1996, 29 (07) :1779-1798

[2] Investigation of three-dimensional grain-boundary structures in oxides through multiple-scattering analysis of spatially resolved electron-energy-loss spectra [J].

Browning, ND ;

Moltaji, HO ;

Buban, JP .

PHYSICAL REVIEW B, 1998, 58 (13) :8289-8300

[3] The influence of atomic structure on the formation of electrical barriers at grain boundaries in SrTiO3 [J].

Browning, ND ;

Buban, JP ;

Moltaji, HO ;

Pennycook, SJ ;

Duscher, G ;

Johnson, KD ;

Rodrigues, RP ;

Dravid, VP .

APPLIED PHYSICS LETTERS, 1999, 74 (18) :2638-2640

[4] GRAIN-BOUNDARY CHEMISTRY OF BARIUM-TITANATE AND STRONTIUM-TITANATE .1. HIGH-TEMPERATURE EQUILIBRIUM SPACE-CHARGE [J].

CHIANG, YM ;

TAKAGI, T .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1990, 73 (11) :3278-3285

[5] DEFECT STRUCTURE AND ELECTRICAL-PROPERTIES OF SINGLE-CRYSTAL BA0.03SR0.97TIO3 [J].

CHOI, GM ;

TULLER, HL .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1988, 71 (04) :201-205

[6] Electrochemical investigations of SrTiO3 boundaries [J].

Denk, I ;

Claus, J ;

Maier, J .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1997, 144 (10) :3526-3536

[7]

Duscher G, 1998, PHYS STATUS SOLIDI A, V166, P327, DOI 10.1002/(SICI)1521-396X(199803)166:1<327::AID-PSSA327>3.0.CO

[8]

2-R

[9]

Egerton R.F., 2011, Electron Energy-loss Spectroscopy in the Electron Microscope, Vthird, DOI DOI 10.1007/978-1-4419-9583-4

[10] Practical aspects of atomic resolution imaging and analysis in STEM [J].

James, EM ;

Browning, ND .

ULTRAMICROSCOPY, 1999, 78 (1-4) :125-139