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Proceedings Paper

Effect of magnetic field on the piezoelectric resonant frequency of a piezoelectric-ferrite composite
Author(s): K. Srinivas; Guduru Prasad; T. Bhimasankaram; S. V. Suryanarayana; Chandra Prakash Rana; S. N. Chatterjee
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Paper Abstract

In this paper, we report the observation of the effect of magnetic field on the shift of resonant frequencies of a composite consisting of 40 percent PZT and 60 percent Ni0.98Co0.02Fe2O4. The samples were synthesized by sintering a compressed mixture of Ni0.98Co0.02Fe2O4 and the PZT at 1200 degrees C. The samples were electrically poled at 7.5 kV/cm for 30 mts at 100 degrees C and were cooled to room temperature in the presence of filed. The resonant frequencies were determined by analyzing the admittance plots. The electromechanical coupling coefficients were evaluated by the resonance- antiresonance method. The results show that there is a considerable shift in resonant frequency under the action of magnetic field. The relative shift in the resonant frequency in crease with increasing field, reaching a maximum around 1.5 kOe.

Paper Details

Date Published: 9 November 1999
PDF: 12 pages
Proc. SPIE 3903, Indo-Russian Workshop on Micromechanical Systems, (9 November 1999); doi: 10.1117/12.369466
Show Author Affiliations
K. Srinivas, Osmania Univ. (India)
Guduru Prasad, Osmania Univ. (India)
T. Bhimasankaram, Osmania Univ. (India)
S. V. Suryanarayana, Osmania Univ. (India)
Chandra Prakash Rana, Solid State Physics Lab. (India)
S. N. Chatterjee, Solid State Physics Lab. (India)

Published in SPIE Proceedings Vol. 3903:
Indo-Russian Workshop on Micromechanical Systems
Vladimir I. Pustovoy; Vinoy K. Jain, Editor(s)

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