Evidence of magnetoelectric coupling on calcium doped bismuth ferrite thin films grown by chemical solution deposition

被引：7

作者：

Costa, L. V. ^{[1
]}

Ranieri, M. G. ^{[1
]}

Cilense, M. ^{[2
]}

Longo, E. ^{[2
]}

Simoes, A. Z. ^{[1
]}

机构：

[1] Sao Paulo State Univ, UNESP, Engn Fac Guaratingueta, Dept Mat Sci, BR-12516410 Guaratingueta, SP, Brazil

[2] Sao Paulo State Univ, UNESP, Chem Inst Interdiciplinar Lab Ceram, Dept Phys Chem, BR-1480090 Araraquara, SP, Brazil

来源：

JOURNAL OF APPLIED PHYSICS | 2014年 / 115卷 / 17期

基金：

巴西圣保罗研究基金会;

关键词：

MULTIFERROIC PROPERTIES; BIFEO3; CONDUCTION; CE;

D O I：

10.1063/1.4867123

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Magnetoelectric coupling was observed at room temperature in calcium modified bismuth ferrite BiFeO3 (BFO) thin films deposited on Pt/TiO2/SiO2/Si (100) substrates by the chemical solution deposition. Undoped and Ca-doped BiFeO3 films were coherently grown at a temperature of 500 degrees C for 2 h. The highest doped BFO film has a tetragonal structure with P4mm space group, while BFO has a rhombohedral structure with space group R3c, which can be treated as a special triclinic structure. Room temperature magnetic coercive field indicates that the undoped film is magnetically soft with maximum magnetoelectric coefficient in the longitudinal direction was about 12 V/cm. Adding Ca2+ ions to BFO in high concentration decreases the remnant polarization and stabilizes the charged domain walls which interact with oxygen vacancies reducing coercive field. (C) 2014 AIP Publishing LLC.

引用

页数：3

共 16 条

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