Nonlinear positive temperature coefficient of resistance of BaTiO3 film

被引：36

作者：

Okano, M

Watanabe, Y ^{[1
]}

Cheong, SW

机构：

[1] Kyushu Univ, Fukuoka 8128581, Japan

[2] Bell Labs, Murray Hill, NJ 07974 USA

来源：

APPLIED PHYSICS LETTERS | 2003年 / 82卷 / 12期

关键词：

D O I：

10.1063/1.1563061

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Conductance decreasing with increasing temperature (T) above a characteristic T (T-0) is found in the reverse-diode characteristics of metal contacts on strained BaTiO3 epitaxial films. The conduction mechanisms below and above T-0 near the Curie temperature of the bulk BaTiO3 are distinctly different. Marked similarities to these characteristics are found in the surface conduction on BaTiO3 single crystal in a high vacuum. By comparing the observations with the positive temperature coefficient of resistance (PTCR) effect in ceramics, we suggest that the anomaly is regarded as a PTCR effect at metal/ferroelectric contact, and discuss the origin of the effect in thin films and single crystals. (C) 2003 American Institute of Physics.

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页码：1923 / 1925

页数：3

相关论文

共 21 条

[1] Giant permittivity in epitaxial ferroelectric heterostructures [J].

Erbil, A ;

Kim, Y ;

Gerhardt, RA .

PHYSICAL REVIEW LETTERS, 1996, 77 (08) :1628-1631

[2] Effect of annealing treatments on positive temperature coefficient of resistance properties of barium titanate ceramics and a new model for the positive temperature coefficient of resistance effect [J].

Gallego, MM ;

West, AR .

JOURNAL OF APPLIED PHYSICS, 2001, 90 (01) :394-403

[3] Effect of electric-field-induced polarization on positive temperature coefficient of resistivity characteristics of semiconducting barium titanate ceramics [J].

Hamamoto, K ;

Kuwabara, M .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 2001, 40 (11A) :L1163-L1165

[4] BARIUMTITANAT ALS SPERRSCHICHTHALBLEITER [J].

HEYWANG, W .

SOLID-STATE ELECTRONICS, 1961, 3 (01) :51-58

[5] A positive temperature coefficient of resistivity effect from a paraelectric Pt/(Ba-0.5,Sr-0.5)TiO3/IrO2 thin-film capacitor [J].

Hwang, CS ;

Lee, BT ;

Cho, HJ ;

Lee, KH ;

Kang, CS ;

Hideki, H ;

Lee, SI ;

Lee, MY .

APPLIED PHYSICS LETTERS, 1997, 71 (03) :371-373

[6] OPTICAL ABSORPTION AND ELECTRICAL CONDUCTIVITY OF REDUCED BATIO3 SINGLE CRYSTAL [J].

IKEGAMI, S ;

ISE, Y ;

UEDA, I .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1961, 16 (03) :572-&

[7]

Jianquan Q., 2001, SOLID STATE COMMUN, V120, P505

[8] SOME ASPECTS OF SEMICONDUCTING BARIUM TITANATE [J].

JONKER, GH .

SOLID-STATE ELECTRONICS, 1964, 7 (12) :895-903

[9] X-ray diffraction and Rutherford backscattering spectrometry of Ba1NbxTi1-xO3 thin films synthesized by laser ablation [J].

Khan, MN ;

Kim, HT ;

Kusawake, T ;

Kudo, H ;

Ohshima, K ;

Uwe, H .

JOURNAL OF APPLIED PHYSICS, 1999, 86 (04) :2307-2310

[10] Single-grain boundaries in PTC resistors [J].

Kuwabara, M ;

Morimo, K ;

Matsunaga, T .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1996, 79 (04) :997-1001