Piezoelectric transformer based ultrahigh sensitivity magnetic field sensor

Islam, Rashed Adnan; Kim, Hyeoungwoo; Priya, Shashank; Stephanou, H.E.

doi:10.1063/1.2357941

Cited by 31 publications

(16 citation statements)

References 12 publications

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“…This three-phase composite consists of lead-free materials which is critical for the applications. [11][12][13][14] II. EXPERIMENTAL 0.948 Na 0.5 K 0.5 NbO 3 -0.052 LiSbO 3 ͑NKNLS͒ and Ni 0.8 Zn 0.2 Fe 2 O 4 ͑NZF͒ ceramics were synthesized by mixed oxide sintering method.…”

Section: Introductionmentioning

confidence: 99%

Self-biased magnetoelectric response in three-phase laminates

Yang¹,

Park²,

Cho³

et al. 2010

Journal of Applied Physics

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Articles you may be interested in Self-biased large magnetoelectric coupling in co-sintered Bi0.5Na0.5TiO3 based piezoelectric and CoFe2O4 based magnetostrictive bilayered composite J. Appl. Phys. 116, 244101 (2014) This study reports the experimental observation and analysis of self-biased magnetoelectric ͑ME͒ effect in three-phase laminates. The 2-2 L-T mode laminates were fabricated by attaching nickel ͑Ni͒ plates and ME particulate composite plates having 3-0 connectivity with 0.948Na 0.5 K 0.5 NbO 3 -0.052LiSbO 3 ͑NKNLS͒ matrix and Ni 0.8 Zn 0.2 Fe 2 O 4 ͑NZF͒ dispersant. The presence of two types of ferromagnetic materials, Ni and NZF, results in built-in magnetic bias due to difference in their magnetic susceptibilities and coercivity. This built-in bias ͑H bias ͒ provides finite ME effect at zero applied magnetic dc field. The ME response of bending mode trilayer laminate NKNLS-NZF/Ni/NKNLS-NZF in off-resonance and on-resonance conditions was shown to be mathematical combination of the trilayers with configuration NKNLS-NZF/Ni/NKNLS-NZF and NKNLS/Ni/NKNLS representing contributions from magnetic interaction and bending strain.

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Section: Introductionmentioning

confidence: 99%

Self-biased magnetoelectric response in three-phase laminates

Yang¹,

Park²,

Cho³

et al. 2010

Journal of Applied Physics

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“…For the gradiometer samples A and B, the input voltage of 10 V p-p was applied on the ring section and the output voltage was measured from the dot section using a Tektronix TDS 420A four channel digital oscilloscope with varying dc magnetic bias field. The frequency range was chosen near resonance frequency of the transformer, [7][8][9] i.e., 249 kHz for sample A and 235 kHz for sample B. The magnetic field generated in the dot section was measured by using the magnetic field sensor ͑micropro-cessor controlled precision gauss meter from Walker LDJ Scientific, Inc.͒.…”

Section: Methodsmentioning

confidence: 99%

Metal-ceramic laminate composite magnetoelectric gradiometer

Bedekar

Бичурин

Иванов

et al. 2010

Review of Scientific Instruments

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.; Bichurin, M. I.; Ivanov, S. N.; et al., "Metal-ceramic laminate composite magnetoelectric gradiometer," Rev. Sci. Instrum. 81, 033906 (2010) Gradiometer resembles in functionality a magnetic field sensor where it measures the magnetic field gradient and its sensitivity is determined by the ability to quantify differential voltage change with respect to a reference value. Magnetoelectric ͑ME͒ gradiometer designed in this study is based upon the nickel ͑Ni͒-Pb͑Zr, Ti͒O 3 ͑PZT͒ composites and utilizes the ring-dot piezoelectric transformer structure working near the resonance as the basis. The samples had the ring-dot electrode pattern printed on the top surface of PZT, where ring acts as the input while dot acts as the output. There is an insulation gap between the input and output section of 1.2 mm. The generated magnetic field due to converse ME effect interacts with the external applied magnetic field producing flux gradient, which is detected through the frequency shift and output voltage change in gradiometer structure. The measurements of output voltage dependence on applied magnetic field clearly illustrate that the proposed design can provide high sensitivity and bandwidth.

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“…5 This method eliminates the need of dc bias, bonding agent, and charge amplifier circuit. In this letter, we analyze the working principle of the piezoelectric resonance based magnetic field sensor utilizing particulate ME composites and report experimental data showing a voltage controlled magnetic field.…”

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confidence: 99%

Working principle of voltage controlled differential magnetic field sensor

Kim

Islam

Priya

2007

Applied Physics Letters

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In this letter the authors present the experimental data illustrating the working mechanism of the high sensitivity differential magnetic field sensor. Further, the authors report for the data showing the possibility for realizing a voltage controlled magnetic field. The sensor works on the following principle. A constant voltage is applied to the ring section of the sensor at the resonance frequency which induces magnetic field in the dot section. If an external magnetic object is brought in the vicinity of the dot section, then the resulting differential magnetic field induces change in the voltage gain due to magnetoelectric effect.

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Piezoelectric transformer based ultrahigh sensitivity magnetic field sensor

Cited by 31 publications

References 12 publications

Self-biased magnetoelectric response in three-phase laminates

Self-biased magnetoelectric response in three-phase laminates

Metal-ceramic laminate composite magnetoelectric gradiometer

Working principle of voltage controlled differential magnetic field sensor

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