Fractal cluster modeling of the fatigue behavior of lead zirconate titanate

A liquid-precursor process was used to produce an epitaxial all-oxide ferroelectric memory device structure. The lanthanum strontium manganate–lead zirconate titanate–lanthanum strontium manganate (LSMO–PZT–LSMO) structure used for this device shows excellent polarization and fatigue behavior with a remnant polarization Pr of 42 µC/cm2 and a coercive field Ec of 68 keV. The polarization was found to only slightly degrade after over 1010 fatigue cycles. This behavior is contrasted with epitaxial PZT using a metal top electrode. In addition, the use of a top LSMO electrode was a sufficient barrier to Pb loss during heating to allow subsequent (or prolonged) heat treatments that would generally lead to Pb loss.

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First Principles’ Investigation of Electronic Properties of Hf, Ag, Cd, Zn, Ce, Nd, Sm-Modified Lead Zirconate Titanate

Journal of Computational and Theoretical Nanoscience ◽

10.1166/jctn.2016.5768 ◽

2016 ◽

Vol 13 (10) ◽

pp. 7661-7665

Author(s):

R. A Hussein ◽

M El-Okr ◽

I. I Bashter ◽

M Ibrahim

Keyword(s):

Electronic Properties ◽

Lead Zirconate Titanate ◽

First Principles ◽

Density Functional ◽

Oxygen Vacancies ◽

Energy State ◽

Fatigue Behavior ◽

Lead Zirconate ◽

Theoretical Explanation ◽

Zirconate Titanate

First principles investigations, including density functional theory (DFT) have been applied to calculate the electronic properties of A-site modified lead zirconate titanate (PZT). The theoretical explanation for the origin of fatigue in ferroelectric perovskite oxides was implemented to study the fatigue behavior. The explanation indicates that, the fatigue is related to the weakness of π bond between Ti 3d and O 2p states, caused by the occupancy of the Ti 3d state by electrons which released from oxygen vacancies. If a certain energy state of the additive element founded to be overlapped with the Ti 3d state at conduction band minima, then it will sharing the electrons released by oxygen vacancies with the Ti 3d state. Therefore, when the Ti 3d state become less occupied with electrons the π bond between the Ti 3d and O 2p states become more maintained and the composition is less susceptible to fatigue.

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THE EFFECT OF TEMPERATURE ON BIPOLAR ELECTRICAL FATIGUE BEHAVIOR OF LEAD ZIRCONATE TITANATE CERAMICS

Functional Materials Letters ◽

10.1142/s1793604712500270 ◽

2012 ◽

Vol 05 (03) ◽

pp. 1250027 ◽

Cited By ~ 4

Author(s):

SOODKHET POJPRAPAI ◽

JULIA GLAUM

Keyword(s):

Lead Zirconate Titanate ◽

Fatigue Behavior ◽

Lead Zirconate ◽

Effect Of Temperature ◽

Pinning Effect ◽

Zirconate Titanate ◽

Different Temperatures ◽

Lower Temperature ◽

Number Of Cycles ◽

Titanate Ceramics

The ferroelectric fatigue behavior of lead zirconate titanate was investigated under different temperatures (room temperature and 125°C). A bipolar electric field of ±1.5 kV/mm at a frequency of 50 Hz was applied to the samples up to 2 × 105 cycles. A markedly different fatigue rate was observed dependent on temperature. The fatigue degradation represented by the loss of polarization and strain increases with the number of cycles and is more pronounced in the case of the lower temperature. Brennan's model based on a logarithmic fatigue rate is applied to explain the temperature effect on fatigue behavior due to the pinning effect.

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A Study of the Electrical Fatigue Behavior of Lead Zirconate Titanate for Micro-Actuator Application in Hard Disk Drives

Integrated Ferroelectrics ◽

10.1080/10584587.2020.1857173 ◽

2021 ◽

Vol 214 (1) ◽

pp. 11-18

Author(s):

Zhenhua Luo ◽

Sirirat Kampoosiri ◽

Thita Sonklin ◽

Watcharin Jongpinit ◽

Boonruang Marungsri ◽

...

Keyword(s):

Lead Zirconate Titanate ◽

Fatigue Behavior ◽

Hard Disk Drives ◽

Hard Disk ◽

Lead Zirconate ◽

Disk Drives ◽

Micro Actuator ◽

Zirconate Titanate ◽

Actuator Application

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Electrical fatigue behavior of lead zirconate titanate ceramic under elevated temperatures

Journal of the European Ceramic Society ◽

10.1016/j.jeurceramsoc.2016.12.037 ◽

2017 ◽

Vol 37 (5) ◽

pp. 2047-2055 ◽

Cited By ~ 9

Author(s):

Methee Promsawat ◽

Marco Deluca ◽

Sirirat Kampoosiri ◽

Boonruang Marungsri ◽

Soodkhet Pojprapai

Keyword(s):

Lead Zirconate Titanate ◽

Elevated Temperatures ◽

Fatigue Behavior ◽

Lead Zirconate ◽

Zirconate Titanate ◽

Lead Zirconate Titanate Ceramic ◽

Titanate Ceramic

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Convergent-bceam diffraction studies on lead zirconate titanate Ceramics

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100143961 ◽

1986 ◽

Vol 44 ◽

pp. 482-483

Author(s):

M.L.A. Dass ◽

T.A. Bielicki ◽

G. Thomas ◽

T. Yamamoto ◽

K. Okazaki

Keyword(s):

Lead Zirconate Titanate ◽

Direct Proof ◽

Lead Zirconate ◽

Subsolidus Phase ◽

Pzt Ceramics ◽

Subsolidus Phase Diagram ◽

Zirconate Titanate ◽

Two Phases ◽

Cbd Method ◽

Titanate Ceramics

Lead zirconate titanate, Pb(Zr,Ti)O3 (PZT), ceramics are ferroelectrics formed as solid solutions between ferroelectric PbTiO3 and ant iferroelectric PbZrO3. The subsolidus phase diagram is shown in figure 1. PZT transforms between the Ti-rich tetragonal (T) and the Zr-rich rhombohedral (R) phases at a composition which is nearly independent of temperature. This phenomenon is called morphotropism, and the boundary between the two phases is known as the morphotropic phase boundary (MPB). The excellent piezoelectric and dielectric properties occurring at this composition are believed to.be due to the coexistence of T and R phases, which results in easy poling (i.e. orientation of individual grain polarizations in the direction of an applied electric field). However, there is little direct proof of the coexistence of the two phases at the MPB, possibly because of the difficulty of distinguishing between them. In this investigation a CBD method was found which would successfully differentiate between the phases, and this was applied to confirm the coexistence of the two phases.

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