Ferromagnetic resonance induced large microwave magnetodielectric effect in cerium doped Y3Fe5O12 ferrites.
In recent years, multifunctional materials contained simultaneous ferroelectric and ferromagnetic ordering have been realized. Here, a real time room temperature adaptive materials system, which demonstrates an RF magnetodielectric (MD) response, i.e., CexY3-xFe5O12 (x = 0, 0.05, 0.1, 0.15, 0.2), is reported. The magnetic and dielectric properties of Ce-doped YIG microwave ferrites processed by a traditional ceramic route have been measured over a frequency range of 4-8 GHz (C-band). The substitution of Ce not only enhances the microwave electromagnetic properties of the YIG, but also modulates the magnetodielectric response. The maximum magnetodielectric response in Ce-doped YIG sample ranges in magnitude from approximately +5% to -5% under an applied field of 1.78 kOe. This effect was attributed to electron fluctuations on the Fe cation sites. Furthermore, the magnitude of the MD response was shown to be enhanced by the cerium content. It is believed that research of the magnetodielectric effect in YIG ferrites is of great importance to the development of next generation multifunctional adaptive microwave materials, devices and integrated circuits.
School of Optical and Electric Information, Huazhong University of Science and Technology, Wuhan, 430074, China.
Fu
F
Chen
School of Optical and Electric Information, Huazhong University of Science and Technology, Wuhan, 430074, China.
Xian
X
Wang
School of Optical and Electric Information, Huazhong University of Science and Technology, Wuhan, 430074, China.
Yan
Y
Nie
School of Optical and Electric Information, Huazhong University of Science and Technology, Wuhan, 430074, China.
Qifan
Q
Li
School of Optical and Electric Information, Huazhong University of Science and Technology, Wuhan, 430074, China.
Jun
J
Ouyang
School of Optical and Electric Information, Huazhong University of Science and Technology, Wuhan, 430074, China.
Zekun
Z
Feng
Center for Microwave Magnetic Materials and Integrated Circuits, and Department of Electrical and Computer Engineering, Northeastern University, Boston, MA 02115, USA.
Yajie
Y
Chen
Center for Microwave Magnetic Materials and Integrated Circuits, and Department of Electrical and Computer Engineering, Northeastern University, Boston, MA 02115, USA.
Vincent G
VG
Harris