Effect of oxygen vacancy on the dielectric relaxation of BaTiO3 thin films in a quenched state

被引：24

作者：

Yao, Sheng-Hong ^{[1
]}

Yuan, Jin-Kai ^{[2
]}

Gonon, Patrice ^{[3
]}

Bai, Jinbo ^{[2
]}

Pairis, Sebastien ^{[4
]}

Sylvestre, Alain ^{[1
]}

机构：

[1] CNRS, UJF, G2ELab, F-38042 Grenoble 9, France

[2] Ecole Cent Paris, CNRS, UMR8579, Lab MSSMAT, F-92290 Chatenay Malabry, France

[3] CNRS, UJF, LTM, F-38054 Grenoble 9, France

[4] UJF, Inst Neel, F-38042 Grenoble 9, France

来源：

JOURNAL OF APPLIED PHYSICS | 2012年 / 111卷 / 10期

关键词：

DC ELECTRICAL DEGRADATION; PEROVSKITE-TYPE TITANATES; CAPACITORS; DEFECTS; CRYSTALLINE; MOBILITY; CURRENTS; SRTIO3;

D O I：

10.1063/1.4717758

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A thermal treatment below the crystallization temperature followed by rapid cooling down was adopted onto as-deposited BaTiO3 (BTO) amorphous films to freeze the microstructure activated at annealed temperature. A large increase of dielectric constant from 19 to 329 was observed at 0.1 Hz for the BTO film annealed at 600 degrees C for 60 min. Subsequently, three separated dielectric relaxations were exploited as a function of the frequency and temperature. Such dielectric responses were analyzed in terms of the activation energy. The evolution of oxygen vacancy with temperature can be invoked as being responsible for the observed dielectric relaxations. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4717758]

引用

页数：5

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