Bi_(0.8)La_(0.2)FeO_3/La_(0.7)Sr_(0.3)MnO_3/SrTiO

兵器材料科学与工程 , 2009, 32(6): 4-6. doi: 10.3969/j.issn.1004-244X.2009.06.002

Bi_(0.8)La_(0.2)FeO_3/La_(0.7)Sr_(0.3)MnO_3/SrTiO_3纳米晶多铁薄膜的制备

李享成 ^1, , 陆培祥 ^2, , 杨光 ^3, , 姚凯伦 ^4, , 朱伯铨 ^5,

1.武汉科技大学,耐火材料与高温陶瓷国家重点实验室培育基地,湖北,武汉,430081

2.华中科技大学,武汉光电国家实验室,湖北,武汉,430074

3.华中科技大学,武汉光电国家实验室,湖北,武汉,430074

4.华中科技大学,物理系,湖北,武汉,430074

5.武汉科技大学,耐火材料与高温陶瓷国家重点实验室培育基地,湖北,武汉,430081

基金项目: 国家自然科学基金(50904048)

关键词：多铁薄膜 , Bi_(0.8)La_(0.2)FeO_3 , LSMO

Preparation of Bi_(0.8)La_(0.2)FeO_3/La_(0.7)Sr_(0.3)MnO_3/SrTiO_3 nano-crystalline multiferroic films

LI Xiangcheng ^1, , LU Peixiang ^2, , YANG Guang ^3, , YAO Kailun ^4, , ZHU Boquan ^5,

1.武汉科技大学,耐火材料与高温陶瓷国家重点实验室培育基地,湖北,武汉,430081

2.华中科技大学,武汉光电国家实验室,湖北,武汉,430074

3.华中科技大学,武汉光电国家实验室,湖北,武汉,430074

4.华中科技大学,物理系,湖北,武汉,430074

5.武汉科技大学,耐火材料与高温陶瓷国家重点实验室培育基地,湖北,武汉,430081

Keywords： multiferroic films , Bi_(0.8)La_(0.2)FeO_3 , La_(0.7)Sr_(0.3)MnO_3

以SrTiO_3(STO)为基片,以La_(0.7)Sr_(0.3)MnO_3(LSMO)为缓冲层,采用脉冲激光沉积法制备了Bi_(0.8)La_(0.2)FeO_3(BLFO)/LSMO/STO多铁薄膜.通过生长条件控制,得到单相的BLFO薄膜,且沿(100)面生长,晶粒尺寸为40 nm,厚度为223 nm.BLFO/LSMO/STO纳米晶薄膜的最大电极化为25 μC/cm~2,饱和磁化强度为30 kA/m.具有多铁性能.

Using La_(0.7)Sr_(0.3)MnO_3(LSMO) as electrode, Bi_(0.8)La_(0.2)FeO_3(BLFO) thin films were grown on SrTiO3(100)(STO) substrates by pulse laser deposition. The results show that through controlling growth condition, single phase of BLFO with the particle size of 40 nm and the thickness of 223 nm can be prepared successfully, which grows along the direction of (100). The nanocrystalline films of BLFO/LSMO/STO show ferroelectric hysteresis with the largest polarization of 25μC/cm~2. The saturation magnetization of BLFO/LSMO/STO films is about 30 kA/m. The films possess multiferroic properties.

参考文献

[1]	ZHENG H;WANG J;LOFLAND S E et al.Muhiferroic BaTiO_3-CoFe_2O_4 Nanostructures[J].Science,2004,303:661-663.
[2]	李享成,杨光,戴能利,陈爱平,龙华,姚凯伦,陆培祥.脉冲激光沉积（La0.2Bi0.8FeO3）0.8-（NiFe2O4）0.2薄膜及其多铁性能研究[J].无机材料学报,2008(05):897-901.
[3]	Qi XD;Dho J;Tomov R;Blamire MG;MacManus-Driscoll JL .Greatly reduced leakage current and conduction mechanism in aliovalent-ion-doped BiFeO3[J].Applied physics letters,2005(6):2903-1-2903-3-0.
[4]	Yao Wang;Ce-Wen Nan .Enhanced ferroelectricity in Ti-doped multiferroic BiFeO_(3) thin films[J].Applied physics letters,2006(5):052903-1-052903-3-0.
[5]	Yi-Pei Liu;Jenn-Ming Wu .Electric and Magnetic Properties of La- and Pr-Modified BiFeO_3 Ceramics[J].Electrochemical and solid-state letters,2007(6):G39-G41.
[6]	Dongeun Lee;Min G. Kim;Sangwoo Ryu;Hyun M. Jang;Sang G. Lee .Epitaxially grown La-modified BiFeO_(3) magnetoferroelectric thin films[J].Applied physics letters,2005(22):222903-1-222903-3-0.
[7]	Fujino S;Murakami M;Lim SH;Wuttig M;Salamanca-Riba LG;Takeuchi I .Ferroelectric properties of multiphase Bi-Fe-O thin films[J].Solid state ionics,2007(21/22):1257-1261.
[8]	Eerenstein W;Morrison F D;Dho J et al.Comment on:epitaxial BiFeO_3 multiferroic thin film heterostructures[J].Science,2005,307:1203-1207.
[9]	BAI F M;WANG J L;WUTTIG M et al.Destruction of spin cycloid in (Ⅲ) c-oriented BiFeO_3 thin films by epitiaxial constraint:enhanced polarization and release of latent magnetization[J].Applied Physics Letters,2005,86:032511.
[10]	WANG D H;YAN L;ONG C K .BiFeO_3 film deposited on Si substrate buffered with La_(0.7)Sr_(0.3)MnO_3 electrode[J].Applied Physics Letters,2006,89:182905.

上一张下一张

计量

下载量()
访问量()

作者相关

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网