Study of Structural and Electric Properties of the PZT 52/48 Doped With Er+3

Abstract

The scientific community has shown a growing interest in relating to the ferroelectric materials and it has made an effort to develop them. Among these several ferroelectric materials, we proposed to investigated Pb(ZrTi)O 3 doped with distinct Er +3 concentrations. Our aim was to investigate how the erbium affects the PZT electrical properties. To determine the ideal sintering temperature of our ceramic samples, the dilatometry tests were performed. These results have showed that the erbium caused a change in sample densities (91.9% < ρ < 99.0%) as compared to undoped PZT sample. Furthermore, the X-ray diffraction results indicated that all samples are monophasic and peaks are indexed to tetragonal crystalline structure. According to these also results, there was an increment of the parameter a and a reduction of parameter c as compared to undoped PZT sample. On the other hand, the average grain size have decreased with the increment of erbium content. The electrical characterization of ours ceramics showed a peculiar ferrelectric-paraeletric phase transition around 390 ºC. Finally, the ferroelectric hysteresis measurements for doped samples in site A have revealed that remnant polarization and coercive field values depend on content. Whereas, doped samples in site B, the corresponding values are similar.

Structures and Properties of KxCryNi1-x-yO Dielectric Materials Prepared by an Ultrasonic-Assisted Sol-Gel Method

“…Its tanδ value is rather independent of the measured frequency. The highest ε r (2.25 × 10 4 , at 1013 Hz and room temperature) is found for the sample with x = 0.15, which is close to that of (A, B)-doped NiO systems (where A = Li and B = Ti 9,13,18,19 , Cr 20 , V 22 , Fe 24 and Si 10 ), calcium copper titanate perovskite materials 4 and slightly higher than that of (Li, Al)-doped NiO 14 , (Li, Sn)-doped NiO 5 , (K, Ti) doped NiO 31 , (Na, Si)-doped NiO 6 and perovskite oxide materials 50 . Its tanδ value is close to that of other NiO-based ceramics such as (Li, Al) doped NiO prepared via a simple thermal decomposition route 14 , and (Li, Si)-doped NiO prepared using a chemical precipitation method 10 .…”

One-step synthesis of lead zirconate titanate particles using a solid-state reaction method

“…The calcined temperature is known to often determine the crystallinity of the synthesized PZT particles [ 27 ], with several studies reporting the application values of 400–1200 °C in the synthetic process [ 19 , 23 ]. To identify the crystallinity of the particles including the crystallographic structure, crystallite size, and preferred orientation, the XRD patterns of the synthesized and commercial PZT at 700, 800, 900, and 1000 °C were measured ( Figure 1 ).…”

“…These synthetic processes are likely to destroy large particles and refine the grains of the commercial PZT powder [ 4 ]. Besides the high-energy mechanochemical methods, a wide variety of preparation techniques are found to be available and employed to produce PZT nanoparticles, such as hydrothermal [ 13 , 17 , 18 , 19 ] acid acetic-based sol-gel [ 15 , 20 , 21 ], molten salt and polymeric precursor models [ 22 , 23 ], as well as pyrolysis route. Also, the bandgap of the synthesized PZT powder was reportedly found to decrease with an increase in synthetic temperature, using the sol-gel method [ 24 ].…”

Investigation of structural and electrical characteristics of PZT ceramics modified with donor and acceptor dopants

“…In terms of ferroelectric responses, it is reported that doping with lanthanum improves the domain switching which results in a rectangular polarization-electric field (P-E) hysteresis loop. Caceres et al [12] investigated the effect of erbium Er 3+ on the electrical properties of PZT and discovered that Er 3+ caused the sample's density to rise (91.9%<ρ<99.0%) when compared to an undoped sample. In addition, the X-ray diffraction (XRD) pattern corresponding to the tetragonal crystalline structure was observed.…”