Fatigue Properties of Lanthanum Strontium Manganate–lead Zirconate Titanate Epitaxial Thin Film Heterostructures Produced by a Chemical Solution Deposition Method

2000 ◽  
Vol 15 (7) ◽  
pp. 1546-1550 ◽  
Author(s):  
Frank McNally ◽  
Jin Hyeok Kim ◽  
F. F. Lange
Keyword(s):  
Lead Zirconate Titanate ◽  
Fatigue Behavior ◽  
Memory Device ◽  
Lead Zirconate ◽  
Fatigue Properties ◽  
Device Structure ◽  
Lanthanum Strontium Manganate ◽  
Chemical Solution Deposition Method ◽  
Lanthanum Strontium ◽  
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.

Effect of Pb Content on the Fatigue Properties of D.C. Reactive Sputtering-Derived PZT Thin Films

2006 ◽  
Vol 326-328 ◽  
pp. 613-616
Author(s):  
Dae Jin Yang ◽  
Seong Je Cho ◽  
Jong Oh Kim ◽  
Won Youl Choi
Keyword(s):  
Lead Zirconate Titanate ◽  
Perovskite Phase ◽  
Fatigue Behavior ◽  
Ferroelectric Properties ◽  
Pyrochlore Phase ◽  
Reactive Sputtering ◽  
Lead Zirconate ◽  
Fatigue Properties ◽  
Pzt Thin Films ◽  
Pzt Films

Lead zirconate titanate (Pb(Zr0.48Ti0.52)O3 or PZT) films were grown on platinized silicon wafers (Pt/SiO2/Si) by d.c. reactive sputtering method with multi targets. The Pb content of PZT films has been widely recognized as affecting not only the phase formation and microstructure but also the dielectric and ferroelectric properties. Pb content of PZT films was controlled by the variation of Pb target current. The relation between Pb content and Pb target current was expressed as y=0.89x-11.09. The x and y are Pb target current and Pb content, respectively. The pyrochlore phase was transformed to perovskite phase as Pb content was increased. This phase transformation improved the ferroelectric properties of PZT films. In PZT films with perovskite phase, fatigue properties were not improved with excess Pb content. Fatigue properties of PZT films began to be fatigued after 106 switching cycles and coincided with the typical PZT fatigue behavior. Excess Pb content (Pb vacancy) did not affect the fatigue properties of PZT films.

Effect of Hydrogen Anneals on Niobium-Doped Lead Zirconate Titanate Capacitors with Lanthanum Strontium Cobalt Oxide/Platinum Electrodes

1999 ◽  
Vol 38 (Part 1, No. 9B) ◽  
pp. 5361-5363 ◽  
Author(s):  
Joe T. Evans ◽  
Leonard L. Boyer ◽  
Geri Velasquez ◽  
Ramamoorthy Ramesh ◽  
Sanjeev Aggarwal ◽  
...  
Keyword(s):  
Cobalt Oxide ◽  
Lead Zirconate Titanate ◽  
Lead Zirconate ◽  
Platinum Electrodes ◽  
Lanthanum Strontium Cobalt Oxide ◽  
Lanthanum Strontium ◽  
Zirconate Titanate ◽  
Niobium Doped

Piezoelectric Nanogenerators based on Lead Zirconate Titanate nanostructures: An insight into the effect of potential barrier and morphology on the output power generation

2021 ◽  
Author(s):  
SNEHAMOYEE HAZRA ◽  
Subhamita Sengupta ◽  
Soumyaranjan Ratha ◽  
Ankita Ghatak ◽  
Arup Kumar Raychaudhuri ◽  
...  
Keyword(s):  
Power Generation ◽  
Lead Zirconate Titanate ◽  
Electrode Materials ◽  
Mechanical Energy ◽  
Lead Zirconate ◽  
Internal Resistance ◽  
Mechanical Pressure ◽  
Device Structure ◽  
Zirconate Titanate ◽  
Piezoelectric Nanogenerators

Abstract The high internal resistance of the perovskite materials used in Nanogenerators (NGs) lowers the power generation. It severely restricts their application for mechanical energy harvesting from the ambient source. In this work, we demonstrate a flexible Piezoelectric NG (PENG) with an improved device structure. Hydrothermally grown one-dimensional Lead Zirconate Titanate (Pb(ZrTi)O3) of different morphologies are used as the generating material. The morphology of the PZT nanostructures, engineered from nanoparticles to needle-shaped nanowires to increase the surface to volume ratio, provides effective mechanical contact with the electrode. The reduction of the internal resistance of the PENG has been achieved by two ways: i) fabrication of interdigitated electrodes (IDE) to increase the interfacial polarization and ii) lowering of Schottky barrier height (SBH) at the junction of the PZT nanostructure and the metal electrode by varying the electrode materials of different work functions. We find that lowering of the SBH at the interface contributes to an increased piezo voltage generation. The flexible nano needles-based PENG can deliver output voltage 9.5 V and power density 615 μW/cm2 on application low mechanical pressure (~1 kPa) by tapping motion. The internal resistance of the device is ~0.65 MΩ. It can charge a 35 μF super-capacitor up to 5 V within 20 s. This study provides a systematic pathway to solve the bottlenecks in the piezoelectric nanogenerators due to the high internal resistance.

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

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.

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

2012 ◽  
Vol 05 (03) ◽  
pp. 1250027 ◽  
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.

scholarly journals Fractal cluster modeling of the fatigue behavior of lead zirconate titanate

2002 ◽  
Vol 80 (9) ◽  
pp. 1625-1627 ◽  
Author(s):  
Shashank Priya ◽  
Hyeoung Woo Kim ◽  
Jungho Ryu ◽  
Kenji Uchino ◽  
Dwight Viehland
Keyword(s):  
Lead Zirconate Titanate ◽  
Fatigue Behavior ◽  
Lead Zirconate ◽  
Fractal Cluster ◽  
Cluster Modeling ◽  
Zirconate Titanate

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

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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