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IJEMS Vol.11(3) [June 2004] >


Title: Design and fabrication of few devices for dynamic measurement of magneto-electric effect
Authors: Bhattacharya, G S
Mazumder, S
Baisnab, S
Issue Date: Jun-2004
Publisher: CSIR
IPC CodeInt. Cl.7 G01R
Abstract: Measurement of dynamic behaviour of magneto-electric (ME) effect for sintered ceramics has been done by an experimental set-up involving several devices, designed and fabricated in our laboratory. In dynamic method ME signal is registered by measuring the electric potential across the sample under variable dc magnetic field in presence of an ac magnetic field. The relevant devices are dedicated for such measurements only with due consideration to their cost effectiveness. The primary devices begin with the poling system both (a) electric and (b) magnetic, to pole the magneto-electric ceramics. Because of the smallness of ME signal precaution against the noise catch-up is also considered with proper shielding. A lock-in device is used to detect and measure small signals accurately with proper choice of frequency tuned to the frequency of the signal as provided by the frequency generator. The performance of the fabricated devices has been found satisfactory in conducting the dynamic measurement of ME effect for ceramic magneto-electric materials.
Page(s): 185-188
ISSN: 0975-1017 (Online); 0971-4588 (Print)
Source:IJEMS Vol.11(3) [June 2004]

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