Dielectric and micromechanical studies of barium titanate substituted (1-y)Pb (Zn(1/3)Nb(2/3))O(3)-yPT ferroelectric ceramics
IR@CGCRI: CSIR-Central Glass and Ceramic Research Institute, Kolkata
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| Title |
Dielectric and micromechanical studies of barium titanate substituted (1-y)Pb (Zn(1/3)Nb(2/3))O(3)-yPT ferroelectric ceramics
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| Creator |
Himanshu, A K
Bandyopadhyay, S K Sen, Pintu Gupta, D C Chakraborty, Riya Mukhopadhyay, Anoop Kumar Choudary, B K Sinha, T P |
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| Subject |
Electronics
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| Description |
Dielectric studies have been carried out on barium titanate substituted lead zinc niobate ferroelectrics ceramics, (Pb(0.88)Ba(0.12))[(Zn(1/3)Nb(2/3))(0.88)Ti(0.12))]O(3) and (Pb(0.8)Ba(0.2))[(Zn(1/3)Nb(2/3))(0.8)Ti(0.2))]O(3). The dielectric dispersion of the solid solutions has been studied as a function of temperature in the frequency range 100 Hz-1MHz. The temperature variation of the real components of dielectric permittivity (epsilon') at different frequencies shows a diffuse phase transition. Micromechanical studies have been carried on (Pb(0.88)Ba(0.12))[(Zn(1/3)Nb(2/3))(0.88)Ti(0.12))]O(3) and (Pb(0.8)Ba(0.2))[(Zn(1/3)Nb(2/3))(0.8)Ti(0.2))]O(3) by nanoindentation at different loads. Hardness, Young's modulus, elastic energy and total energy have been extracted. It is seen that in case of (Pb(0.8)Ba(0.12))[(Zn(1/3)Nb(2/3))(0.8)Ti(0.2))]O(3), the plastic deformation energy is lower than the other sample, which is due to extra Ti content in B-site. This is also reflected in polarization studies, which confirms that the presence of Ti(4+) in B-site brings forth rigidity in Ti-O bond.
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| Publisher |
National Institute of Science Communication-NISCAIR
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| Date |
2010-05
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cgcri.csircentral.net/786/1/bandyopadhyay'10.pdf
Himanshu, A K and Bandyopadhyay, S K and Sen, Pintu and Gupta, D C and Chakraborty, Riya and Mukhopadhyay, Anoop Kumar and Choudary, B K and Sinha, T P (2010) Dielectric and micromechanical studies of barium titanate substituted (1-y)Pb (Zn(1/3)Nb(2/3))O(3)-yPT ferroelectric ceramics. Indian Journal of Pure & Applied Physics, 48 (5). pp. 349-356. ISSN 0019-5596 |
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| Relation |
http://cgcri.csircentral.net/786/
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