Dielectric and ferroelectric properties of lead zirconate titanate-lead nickel niobate ceramics under compressive stress

The ternary system of lead nickel niobate Pb(Ni1/3Nb2/3)O3 (PNN), lead zinc niobate Pb(Zn1/3Nb2/3)O3 (PZN), and lead zirconate titanate Pb(Zr1/2Ti1/2)O3 (PZT) was investigated to determine the influence of different solid state processing conditions on dielectric and ferroelectric properties. The ceramic materials were characterized using x-ray diffraction, dielectric measurements, and hysteresis measurements. To stabilize the perovskite phase, the columbite route was utilized with a double crucible technique and excess PbO. The phase-pure perovskite phase of PNN–PZN–PZT ceramics was obtained over a wide compositional range. It was observed that for the ternary system 0.5PNN–(0.5 - x)PZN–xPZT, the change in the transition temperature (Tm) is approximately linear with respect to the PZT content in the range x [H11505] 0 to 0.5. With an increase in x, Tm shifts up to high temperatures. Examination of the remanent polarization (Pr) revealed a significant increase with increasing x. In addition, the relative permittivity ([H9280]r) increased as a function of x. The highest permittivities ([H9280]r [H11505] 22,000) and the highest remanent polarization (Pr [H11505] 25 μC/cm2) were recorded for the binary composition 0.5Pb(Ni1/3Nb2/3)O3–0.5Pb(Zr1/2Ti1/2)O3.

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Thermal expansion behavior and estimated total polarizations of lead zirconate titanate–lead nickel niobate ceramics

Materials Letters ◽

10.1016/j.matlet.2010.06.020 ◽

2010 ◽

Vol 64 (18) ◽

pp. 1960-1963 ◽

Cited By ~ 5

Author(s):

Muangjai Unruan ◽

Anurak Prasatkhetragarn ◽

Yongyut Laosiritaworn ◽

Supon Ananta ◽

Orawan Khamman ◽

...

Keyword(s):

Thermal Expansion ◽

Lead Zirconate Titanate ◽

Lead Zirconate ◽

Thermal Expansion Behavior ◽

Zirconate Titanate ◽

Expansion Behavior ◽

Lead Nickel ◽

Titanate Lead

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Improvement of Ferroelectric Properties of Lead Zirconate Titanate Thin Films by Ion-substitution using Rare-earth Cations

MRS Proceedings ◽

10.1557/proc-830-d3.3 ◽

2004 ◽

Vol 830 ◽

Author(s):

Hiroshi Nakaki ◽

Hiroshi Uchida ◽

Shoji Okamoto ◽

Shintaro Yokoyama ◽

Hiroshi Funakubo ◽

...

Keyword(s):

Thin Films ◽

Rare Earth ◽

Lead Zirconate Titanate ◽

Ferroelectric Property ◽

Ferroelectric Properties ◽

Lead Zirconate ◽

Crystal Anisotropy ◽

Pzt Film ◽

Zirconate Titanate ◽

Ion Substitution

ABSTRACTRare-earth-substituted tetragonal lead zirconate titanate thin films were synthesized for improving the ferroelectric property of conventional lead zirconate titanate. Thin films of Pb1.00REx (Zr0.40Ti0.60)1-(3x /4)O3 (x = 0.02, RE = Y, Dy, Er and Yb) were deposited on (111)Pt/Ti/SiO2/(100)Si substrates by a chemical solution deposition (CSD). B-site substitution using rare-earth cations described above enhanced the crystal anisotropy, i.e., ratio of PZT lattice parameters c/a. Remanent polarization (Pr) of PZT film was enhanced by Y3+-, Dy3+- and Er3+-substitution from 20 μC/cm2 up to 26, 25 and 26 μC/cm2 respectively, while ion substitution using Yb3+ degraded the Pr value down to 16 μC/cm2. These films had similar coercive fields (Ec) of around 100 kV/cm. Improving the ferroelectric property of PZT film by rare-earth-substitution would be ascribed to the enhancement of the crystal anisotropy. We concluded that ion substitution using some rare-earth cations, such as Y3+, Dy3+ or Er3+, is one of promising technique for improving the ferroelectric property of PZT film.

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