Giant Electric Field Tuning of Magnetic Properties in Multiferroic Ferrite/Ferroelectric Heterostructures

被引：385

作者：

Liu, Ming ^{[1
]}

Obi, Ogheneyunume ^{[1
]}

Lou, Jing ^{[1
]}

Chen, Yajie ^{[1
]}

Cai, Zhuhua ^{[2
]}

Stoute, Stephen ^{[1
]}

Espanol, Mary ^{[3
]}

Lew, Magnum ^{[4
]}

Situ, Xiaodan ^{[5
]}

Ziemer, Kate S. ^{[2
]}

Harris, Vince G. ^{[1
]}

Sun, Nian X. ^{[1
]}

机构：

[1] Northeastern Univ, Dept Elect & Comp Engn, Ctr Microwave Magnet Mat & Integrated Circuits, Boston, MA 02115 USA

[2] Northeastern Univ, Dept Chem Engn, Boston, MA 02115 USA

[3] Winsor Sch, Dept Sci, Boston, MA 02215 USA

[4] Wellesley Senior High Sch, Wellesley, MA 02481 USA

[5] Quincy High Sch, Quincy, MA 02169 USA

来源：

ADVANCED FUNCTIONAL MATERIALS | 2009年 / 19卷 / 11期

关键词：

ANTENNAS;

D O I：

10.1002/adfm.200801907

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Multiferroic heterostructures of Fe3O4/PZT (lead zirconium titanate), Fe3O4/ PMN-PT (lead magnesium niobate-lead titanate) and Fe3O4/PZN-PT (lead zinc niobate-lead titanate) are prepared by spin-spray depositing Fe3O4 ferrite film on ferroelectric PZT, PMN-PT and PZN-PT substrates at a low temperature of 90 degrees C. Strong magnetoelectric coupling (ME) and giant microwave tunability are demonstrated by a electrostatic field induced magnetic anisotropic field change in these heterostructures. A high electrostatically tunable ferromagnetic resonance (FM R) field shift up to 600 Oe, corresponding to a large microwave ME coefficient of 670 Oe cm kV(-1), is observed in Fe3O4/PMN-PT heterostructures. A record-high electrostatically tunable FMR field range of 860 Oe with a linewidth of 330-380 Oe is demonstrated in Fe3O4/PZN-PT heterostructure, corresponding to a M E coefficient of 108 Oe cm kV(-1). Static ME interaction is also investigated and a maximum electric field induced squareness ratio change of 40% is observed in Fe3O4/PZN-PT. In addition, a new concept that the external magnetic orientation and the electric field cooperate to determine microwave magnetic tunability is brought forth to significantly enhance the microwave tunable range up to 1000 Oe. These low. temperature synthesized multiferroic heterostructures exhibiting giant electrostatically induced tunable magnetic resonance field at microwave frequencies provide great opportunities for electrostatically tunable microwave multiferroic devices:.

引用

页码：1826 / 1831

页数：6

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