Dielectric and micromechanical studies of barium titanate substituted (1-y)Pb (Zn1/3Nb2/3)O3-yPT ferroelectric ceramics

被引：0

作者：

Himanshu, A. K. ^{[1
]}

Bandyopadhyay, S. K. ^{[1
]}

Sen, Pintu ^{[1
]}

Gupta, D. C. ^{[2
]}

Chakraborty, Riya ^{[3
]}

Mukhopadhyay, Anoop K. ^{[3
]}

Choudary, B. K. ^{[4
]}

Sinha, T. P. ^{[5
]}

机构：

[1] VECC, Adv Mat Lab, Kolkata 700064, India

[2] Jiwaji Univ, Sch Studies Studies Phys, Gwalior 474011, India

[3] Cent Glass & Ceram Res Inst, Kolkata 700032, India

[4] Ranchi Univ, Univ Dept Phys, Jharkhand 834001, India

[5] Bose Inst, Dept Phys, Kolkata 700009, India

来源：

INDIAN JOURNAL OF PURE & APPLIED PHYSICS | 2010年 / 48卷 / 05期

关键词：

Polarization; Ferroelectric; Ceramics; Nanoindentation; SYSTEM; BEHAVIOR; PHASE;

D O I：

暂无

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Dielectric studies have been carried out on barium titanate substituted lead zinc niobate ferroelectrics ceramics, (Pb0.88Ba0.12)[(Zn1/3Nb2/3)(0.88)Ti-0.12)]O-3 and (Pb0.8Ba0.2)[(Zn1/3Nb2/3)(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 (Pb0.88Ba0.12)[(Zn1/3Nb2/3)(0.88)Ti-0.12)]O-3 and (Pb0.8Ba0.2)[(Zn1/3Nb2/3)(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 (Pb0.8Ba0.12)[(Zn1/3Nb2/3)(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 Ti4+ in B-site brings forth rigidity in Ti-O bond.

引用

页码：349 / 356

页数：8

共 12 条

[1]

FISCHERCRIPPS, 2002, A C NANOINDENTATION

[2] DIELECTRIC-PROPERTIES OF MODIFIED LEAD ZINC NIOBATE CERAMIC [J].