@article{6f2206388b44464f83bd90b88a568c5b,
title = "Design and characterization of broadband magnetoelectric sensor",
abstract = "In this study, we present a broadband magnetoelectric (ME) sensor design comprising of Metglas and piezoelectric ceramic laminate composite. A systematic study was conducted to elucidate the role of various composite variables toward the ME response [longitudinal-transverse (LT) mode] over the applied range of magnetic dc bias. The broadband behavior was characterized by flat ME responses over a wide range of magnetic dc bias at frequency of 1 kHz. The variation in ME coefficient as a function of magnetic dc bias was found to be significantly dependent on the size and shape of the laminate composites, the number of Metglas layers, and composite structure of sandwich versus unimorph. By adjusting these variables, we were able to achieve near-flat ME response over a magnetic bias range of 90-220 Oe. ME coefficient was also measured as a function of frequency, and at electromechanical resonance the peak value was found to be almost independent of applied magnetic bias in the range of 90-220 Oe.",
author = "Park, {Chee Sung} and Ahn, {Cheol Woo} and Jungho Ryu and Yoon, {Woon Ha} and Park, {Dong Soo} and Kim, {Hyoun Ee} and Shashank Priya",
note = "Funding Information: This work was financially supported by Army Research Office, USA, (Grant No. 47576MS) and Office of Basic Energy Science, Department of Energy, USA (Grant No. DE-FG02-08ER46484). The authors from KIMS acknowledge the funding through Component-Material Development Program, Ministry of Knowledge Economy, Republic of Korea. FIG. 1. (a) Schematic diagram of fabricated samples. Type I: 15.5 × 15.5 mm 2 PZNT plate with Metglas attached on one side only, and Type II: 10.2 mm diameter PZNT disk with Metglas attached on both sides. (b) ME output voltage as a function of dc magnetic field. FIG. 2. (a) ME coefficient as a function of the number of Metglas layers and dc magnetic field. (b) Maximum ME coefficient and saturation dc magnetic field as a function of the number of Metglas layers on PZNT. All measurements were conducted under H ac = 1 Oe and frequency of 1 kHz. FIG. 3. (a) Schematic representation of sample preparation with pyramid Metglas structure on separated electrodes. (b) ME output voltage as a function of applied dc magnetic field. FIG. 4. (a) Synthesized composites for understanding the effect of dimensions. 20 layers of Metglas were attached on all three PZNT plates. (b) ME output voltage variation as a function of dc magnetic field for various dimensions. All ME measurements were conducted under H ac = 1 Oe at 1 kHz. FIG. 5. (a) Schematic structure of the dimensionally gradient sample. (b) Picture of the fabricated sample. 20-layers of Metglas was attached on each rectangular section. (b) ME coefficient of the dimensionally gradient sample under H ac = 1 Oe at 1 kHz. FIG. 6. (a) Machined and electroded H-shaped PZNT plate. (b) Metglas-attached on the PZNT on both rectangular sections. (c) Broadband ME behavior of the H-shaped laminate. FIG. 7. Frequency dependence of the ME coefficient for broadband laminate composite. Measurements were conducted under H ac = 1 Oe and H dc = 94 and 220 Oe. FIG. 8. Resonance analysis. (a) Impedance spectrum. (b) FEM analysis of bending resonance modes. The peak positions are indicated in (a). ",
year = "2009",
doi = "10.1063/1.3117484",
language = "English (US)",
volume = "105",
journal = "Journal of Applied Physics",
issn = "0021-8979",
publisher = "American Institute of Physics",
number = "9",
}