Academic literature on the topic 'Lanthanum Modification of PZT'

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Journal articles on the topic "Lanthanum Modification of PZT"

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Peláiz, Barranco Aimé, los Santos Guerra José de, Zaldívar Osmany García, et al. "Effects of lanthanum modification on dielectric properties of Pb(Zr0.90Ti0.10)O3 ceramics:Enhanced antiferroelectric stability." Journal of Material Science 43 (September 4, 2008): 6087–93. https://doi.org/10.5281/zenodo.14685491.

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Lanthanum modified lead zirconate titanate ceramics with lanthanum content changing from 2 to 6 at% La and a Zr/Ti ratio of 90/10 (PLZT x/90/10) have beenanalyzed by using X-ray diffraction, dielectric response, differential scanning calorimetry, and ferroelectric hysteresis. An antiferroelectric state was found to be stabilized,whereas the long-range ferroelectric state was disrupted by lanthanum substitution on the lead sites. A ferroelectric state is shown to be stable over an antiferroelectric state for low lanthanum contents in a wide temperature range, where both phases coexist. With the
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Benhadjala, Warda, Florence Sonnerat, Jennifer Guillaume, et al. "Highly tunable Mn-doped PZT thin films for integrated RF devices." Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2015, DPC (2015): 002095–127. http://dx.doi.org/10.4071/2015dpc-tha33.

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Modern RF systems have triggered an important and urgent demand for inexpensive voltage controlled capacitors used for a wide range of applications such as tunable antennas or low-noise voltage-controlled oscillators (VCO). Ferroelectric materials have received considerable interest for electrically tunable dielectrics due to their high dielectric constant and large dielectric nonlinearity under dc bias field. Lead zirconate titanate (PZT) ceramics which have been under intense investigation for various industrial domains including micro-electro-mechanical systems (MEMS), non-volatile memories
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Zeng, X., Ai Li Ding, X. S. Zheng, Yong Zhang, and Ping Sun Qiu. "Effects of Lanthanum Modification on the Structure and Electrical Properties of PZN-PZT Ceramics." Key Engineering Materials 280-283 (February 2007): 227–30. http://dx.doi.org/10.4028/www.scientific.net/kem.280-283.227.

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La-modified PZN-PZT compositions with representative formula Pb1-0.7xLa0.7x(Zn1/3Nb2/3)0.3- (Zr0.55Ti0.45)0.7(1-x/4)O3 were prepared by the columbite precursor method. La content, x, was varied from 0 to 8mol%. Effects of La doping on microstructure, dielectric and piezoelectric properties were investigated. The results showed that in present system La doping promotes the formation of pyrochlore phase and the phase shifted from rhombohedral to tetragonal structure with increasing La content. It was also found that La doping makes dielectric permittivity maximum decrease and the degree of diffu
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Kainz, T., B. Bitschnau, F. A. Mautner, and K. Reichmann. "Comparison of Lanthanum and Bismuth modification of lead Zirconate-Lead Titanate PZT—A structural and dielectric study." Journal of the European Ceramic Society 36, no. 3 (2016): 507–14. http://dx.doi.org/10.1016/j.jeurceramsoc.2015.10.008.

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Dai, Xunhu, Z. Xu, Jie-Fang Li, and Dwight Viehland. "Effects of lanthanum modification on rhombohedral Pb(Zr1−xTix)O3 ceramics: Part I. Transformation from normal to relaxor ferroelectric behaviors." Journal of Materials Research 11, no. 3 (1996): 618–25. http://dx.doi.org/10.1557/jmr.1996.0075.

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The interruption of long-range polar order in rhombohedral ferroelectricPb(Zr1−xTix)O3 (PZT) ceramics has been systematically studied by incorporating La onto the A-site of the perovskite (ABO3) structure for Zr/Ti ratios of 65/35 and 80/20 and various La contents. Studies have been performed by hot-stage transmission electron microscopy, dielectric spectroscopy, and Sawyer–Tower polarization (P-E) techniques. The evolution of a polar nanodomain state from a normal micron-sized domain state with increasing La content was observed. The emergence of this polar cluster state was characterized by
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Adamczyk-Habrajska, Małgorzata, Jolanta Makowska, Tomasz Pikula, et al. "Impedance Spectroscopy of Lanthanum-Doped (Pb0.75Ba0.25)(Zr0.70Ti0.30)O3 Ceramics." Applied Sciences 14, no. 21 (2024): 9854. http://dx.doi.org/10.3390/app14219854.

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This study examines the effects of La3+ doping on (Pb0.75Ba0.25)(Zr0.70Ti0.30)O3(PBZT) ceramics, which were synthesized using the conventional solid-state reaction method. X-ray diffraction analysis confirmed that the PBZT structure, including PBZT doped with La3+ at concentrations x = 1 at.% and x = 2 at.%, exhibited a rhombohedral (R3c) space group, while higher doping levels of x = 3 at.% and x = 4 at.% led to a dominant cubic (Pm-3m) phase with approximately 30% of a remnant rhombohedral component. Scanning electron microscopy (SEM, JEOL JSM-7100F TTL LV, Jeol Ltd., Tokyo, Japan) and energ
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Dai, Xunhu, Z. Xu, Jie-Fang Li, and Dwight Viehland. "Effects of lanthanum modification on rhombohedral Pb(Zr1−xTix)O3 ceramics: Part II. Relaxor behavior versus enhanced antiferroelectric stability." Journal of Materials Research 11, no. 3 (1996): 626–38. http://dx.doi.org/10.1557/jmr.1996.0076.

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Lanthanum-modified lead zirconate titanate ceramics Pb1−3/2xLax(Zr1−yTiy)O3 [PLZT 100x/100(1 − y)/100y] with Zr/Ti ratios close to the antiferroelectric-ferroelectric (AFE-FE) phase boundary were investigated by dielectric spectroscopy, Sawyer–Tower polarization techniques, and electron microscopy. An incommensurate antiferroelectric (AFEIn) phase was found to be stabilized from the rhombohedral FE state in the compositional series 100x/90/10 for x ≥ 0.02. The La content required to induce the AFEIn state increased as the Ti content was increased. For 100x/85/15, a state with relaxor-like diel
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Choi, Jong-Jin, Gun-Tae Park, Chee-Sung Park, and Hyoun-Ee Kim. "Ferroelectric and piezoelectric properties of highly oriented Pb(Zr,Ti)O3 film grown on Pt/Ti/SiO2/Si substrate using conductive lanthanum nickel nitrate buffer layer." Journal of Materials Research 20, no. 3 (2005): 726–33. http://dx.doi.org/10.1557/jmr.2005.0087.

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The orientation and electrical properties of Pb(Zr,Ti)O3 thin films deposited on a Pt/Ti/SiO2/Si substrate using lanthanum nickel nitrate as a conductive buffer layer were analyzed. The lanthanum nickel nitrate buffer layer was not only electrically conductive but also effective in controlling the texture of the lead zirconate titanate (PZT) thin film. The role of the lanthanum nickel nitrate buffer layer and its effects on the orientation of the PZT thin film were analyzed by x-ray diffraction, electron beam back-scattered diffraction, and scanning electron microscopy. The annealed lanthanum
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Myers, Todd, Parag Banerjee, Susmita Bose, and Amit Bandyopadhyay. "Layered lead zirconate titanate and lanthanum-doped lead zirconate titanate ceramic thin films." Journal of Materials Research 17, no. 9 (2002): 2379–85. http://dx.doi.org/10.1557/jmr.2002.0348.

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The physical layering of sol-gel-derived lead zirconate titanate (PZT) 52/48 and lanthanum-doped PZT (PLZT) 2/52/48 on platinized silicon substrates was investigated to determine if the ferroelectric properties and fatigue resistance could be influenced by different layering sequences. Monolithic thin films of PZT and PLZT were characterized to determine their ferroelectric properties. Sandwich structures of Pt/PZT/PLZT/PLZT/PZT/Au and Pt/PLZT/PZT/PZT/PLZT/Au and alternating structures of Pt/PZT/PLZT/PZT/PLZT/Au and Pt/PLZT/PZT/PLZT/PZT/Au were then fabricated and characterized. X-ray photoele
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Choi, Jong-Jin, Gun-Tae Park, Chee-Sung Park, Jae-Wung Lee, and Hyoun-Ee Kim. "Effects of lanthanum nitrate buffer layer on the orientation and piezoelectric property of Pb(Zr,Ti)O3 thick film." Journal of Materials Research 19, no. 12 (2004): 3671–78. http://dx.doi.org/10.1557/jmr.2004.0470.

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Highly oriented Pb(Zr,Ti)O3 (PZT) films were deposited on Pt/Ti/SiO2/Si substrates by the sol-gel method using lanthanum nitrate as a buffer layer. When the lanthanum nitrate buffer layer was heat treated at temperatures between 450 and 550 °C, the PZT layer coated onto this buffer layer showed a strong (100) preferred orientation. Regardless of the other deposition conditions, such as the pyrolysis temperature, pyrolysis time, annealing temperature and heating rate, the film deposited on the buffer layer had this orientation. Thick films were also fabricated using the sol-gel multi-coating me
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Dissertations / Theses on the topic "Lanthanum Modification of PZT"

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黃嘉瑋. "Modification of magnetoelastic anisotropy in strain controllable Ni thin films on mica substrate attached to PZT." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/wb3j97.

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碩士<br>國立臺灣師範大學<br>物理學系<br>105<br>Multiferroics has attracted much attention in the last decade due to its potential of application. However, the intrinsic coupling between multiferroic phases in single material is hard to achieved at room temperature. Alternatively, in this study, we chose an "artificial" multiferroic material called magnetoelectric (ME) composite to investigate the voltage-assisted ME coupling by combining piezoelectric Pb(Zr,Ti)O3 (PZT) material and magnetostrictive Ni layers. When a voltage applied on PZT, the ME response results from the electric field-induced strain trans
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GUO, HAN LIN, and 郭翰霖. "The Study of Lithium-Lanthanum-Zirconium-Tantalum Oxide Modification on High Voltage Performance for Lithium Cobalt Oxide Cathode Materials." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/e7m84a.

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Books on the topic "Lanthanum Modification of PZT"

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Center, Langley Research, ed. Properties of PZT-based piezoelectric ceramics between -150 and 250C̊. National Aeronautics and Space Administration, Langley Research Center, 1998.

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Center, Langley Research, ed. Properties of PZT-based piezoelectric ceramics between -150 and 250C̊. National Aeronautics and Space Administration, Langley Research Center, 1998.

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Center, Langley Research, ed. Properties of PZT-based piezoelectric ceramics between -150 and 250C̊. National Aeronautics and Space Administration, Langley Research Center, 1998.

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Center, Langley Research, ed. Properties of PZT-based piezoelectric ceramics between -150 and 250C̊. National Aeronautics and Space Administration, Langley Research Center, 1998.

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Book chapters on the topic "Lanthanum Modification of PZT"

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Zeng, X., Ai Li Ding, X. S. Zheng, Yong Zhang, and Ping Sun Qiu. "Effects of Lanthanum Modification on the Structure and Electrical Properties of PZN-PZT Ceramics." In High-Performance Ceramics III. Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-959-8.227.

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Vandana, Monika Tomar, and Reema Gupta. "Growth, Characterization and Pyroelectric Study of Pure and Lanthanum Doped PZT Film." In Advanced Functional Materials for Sustainable Environments. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-62620-3_18.

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A. Islam, Rashed. "Doping Effect on Piezoelectric, Magnetic and Magnetoelectric Properties of Perovskite—Ferromagnetic Magnetoelectric Composites." In Piezoelectric Actuators - Principles, Design, Experiments and Applications [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.95604.

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This chapter explains the effect of compositional modification on the magnetoelectric coefficient in sintered piezoelectric – magnetostrictive composites. It was found that 15 at% doping of Pb(Zn1/3Nb2/3)O3 [PZN] in Pb(Zr0.52Ti0.48)O3 [PZT] enhances the piezoelectric and magnetoelectric properties of a PZT – 20 at% Ni0.8Zn0.2Fe2O4 [NZF] composite. The effect of doping on the ferromagnetic phase was also investigated. With increases in Zn concentration, it was found that the coercive field and Curie temperature of Ni(1-x)ZnxFe2O4 [NZF] decreases, while its saturation magnetization has a maxima at 30 mole% Zn. X-ray diffraction revealed that the lattice constant of NZF increases from 8.32 Å for 0 at% Zn to 8.39 Å for 50 at% Zn. The magnetoelectric coefficient was found to have a maxima of 144 mV/cm.Oe at 30 at% Zn. To understand better, the effect of 40% (by mole) Zn substitution on structural, piezoelectric, ferromagnetic and magnetoelectric properties of Pb(Zr0.52Ti0.48)O3 - CoFe2O4 (PZT - CFO) sintered composite is also explained. X-ray diffraction of Co0.6Zn0.4Fe2O4 (CZF) showed the shift in almost all diffraction peaks to lower diffraction angle confirming the increase in lattice parameter in all three direction from 8.378 (for CFO) to 8.395 Å for (Co,Zn)Fe2O4 (CZF). SEM and TEM results showed defect structure (cleavage, twins, strain fields) in the CZF particle, which is a clear indication of misfit strain developed due to lattice expansion. Magnetic properties measured over temperature (5 K – 1000 K) showed increased magnetization but lower magnetic Curie temperature in PZT - CZF particle. Magnetoelectric coefficient measured as function of ferrite concentration showed an increase of more than 100% after doping the CFO phase with 40% Zn. This enhancement can be attributed to increase in the lattice strain, magnetic permeability and decrease in coercivity.
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M. G, Dr Smitha, and Ms Shwetha. "POLYPYRROLE/LANTHANUM MANGANITE: A COMPARATIVE STUDY OF MORPHOLOGY, STRUCTURAL, VSM, AND EPR STUDIES." In Futuristic Trends in Chemical Material Sciences & Nano Technology Volume 3 Book 1. Iterative International Publishers, Selfypage Developers Pvt Ltd, 2024. http://dx.doi.org/10.58532/v3bdcs1ch22.

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Our research focuses on an innovative category of materials achieved through the modification of the conducting polymer Polypyrrole (PPy: Host) with Perovskite compounds (La0.7Ca0.3MnO3 and La0.7Ba0.3MnO3: Doped). This novel material class is tailored to exhibit distinctive properties. Our study delves into the synthesis of these composite materials through the in-situ chemical oxidation method, coupled with an in-depth investigation of their characteristics. Using various analytical techniques, we explored the morphology, chemical composition, crystal phase, and magnetic behavior of these composites. Scanning Electron Microscopy (SEM) revealed their spherical structure, while Energy Dispersive X-ray (EDAX) analysis confirmed the presence of the respective elements. X-ray Diffraction (XRD) highlighted their Orthorhombic phase, while Vibrating Sample Magnetometry (VSM) demonstrated paramagnetic behavior. Additionally, Electron Paramagnetic Resonance (EPR) revealed intriguing interactions between the host and the doped materials, all of which were observed at room temperature.This comprehensive study enhances our understanding of the fundamental interactions between host and doped materials. Moreover, the findings pave the way for potential future applications, such as energy harvesting and Superconducting Quantum Interference Devices (SQUIDs), suggesting exciting prospects for these nanocomposites in emerging technologies.
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Borrell, Amparo, Rut Benavente, René M. Guillén, et al. "Study of SPS sintering of strontium-doped lanthanum manganite (LSM) by surface modification of powders using DCSBD and ALD." In Ceramic Materials - Present and Future [Working Title]. IntechOpen, 2023. http://dx.doi.org/10.5772/intechopen.1002035.

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Throughout the ceramic processing cycle, it is well known that a small change in the surface energy of as-received powders can cause a considerable effect on the final properties of consolidated materials. The main objective of this chapter is to describe the design and manufacture of new ceramic materials based on strontium-doped lanthanum manganites, LSM (La0.8Sr0.2MnO3) and LSM-8YTZP composites, for cathode in solid oxide fuel cells (SOFC) applications due to their excellent properties, by modifying the surface energy of the starting powder using techniques, such as Diffuse Coplanar Surface Barrier Discharge (DCSBD) and atomic layer deposition (ALD). Subsequently, in order to evaluate the activation energy and optimise the sintering behaviour of these powders, the Spark Plasma Sintering (SPS) technique will be used. SPS allows the complete densification of pieces by a fast and low energy consumption processing.
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Conference papers on the topic "Lanthanum Modification of PZT"

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Nayak, P., T. Badapanda, and S. Panigrahi. "Effect of lanthanum modification on dielectric and conduction behaviour of SrBi4Ti4O15 ceramic." In DAE SOLID STATE PHYSICS SYMPOSIUM 2016. Author(s), 2017. http://dx.doi.org/10.1063/1.4980196.

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Diener, Romina, Gloria Tabacchi, Stefan Nolte, and Stefano Minardi. "Structural modification of gallium lanthanum sulfide glass induced by ultrafast laser inscription." In SPIE LASE, edited by Udo Klotzbach, Kunihiko Washio, and Rainer Kling. SPIE, 2017. http://dx.doi.org/10.1117/12.2250591.

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Samanta, Shibnath, V. Sankaranarayanan, and K. Sethupathi. "Band gap, energy storage density, dielectric and ferroelectric properties study of nano and micro-scale Lanthanum doped PZT." In Proceedings of the International Conference on Nanotechnology for Better Living. Research Publishing Services, 2016. http://dx.doi.org/10.3850/978-981-09-7519-7nbl16-rps-169.

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Chen, Ching-Chen, and Jen-Yuan (James) Chang. "Modification for the Mechanical Model of Flex Cable in Hard Disk Drives With an External Electric Field." In ASME 2013 Conference on Information Storage and Processing Systems. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/isps2013-2883.

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The demand of raising recording density for hard disk has increased these years to achieve higher storage capacity of hard disk drive. This promotes the diminution in track size of hard disk nowadays to only hundreds of nanometers. Thus, more precisely-operated and robust actuation system for read/write heads in HDDs has been the research and development focus. Among mechanical contributors, Chang [1] indicated that flexible circuit in HDDs has been found to be a problematic vibration source that can interfere and reduce the operation accuracy of read/write arm. To perfectly eliminate the dyna
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Jo, Hwan R., and Christopher S. Lynch. "Effects of compositional modification in lead lanthanum zirconate stannate titanate ceramics on electric energy storage properties." In SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, edited by Nakhiah C. Goulbourne and Hani E. Naguib. SPIE, 2013. http://dx.doi.org/10.1117/12.2013783.

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Yamashita, Kaoru, Hikaru Tanaka, Atsushi Morimoto, Yi Yang, and Minoru Noda. "Tunability and sensitivity modification by poling on PZT film of frequency-tunable ultrasonic microsensors." In 2013 Joint IEEE Int'l Symp on Applications of Ferroelectrics & Workshop on Piezoresponse Force Microscopy (ISAF/PFM). IEEE, 2013. http://dx.doi.org/10.1109/isaf.2013.6748658.

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Trtik, V., Miroslav Jelinek, and Lubomir Jastrabik. "Processing parameters influence on structural properties of PZT layers deposited by pulsed laser deposition (PLD)." In Laser Methods of Surface Treatment and Modification: ALT '94 International Conference, edited by Alexander M. Prokhorov and Vladimir I. Pustovoy. SPIE, 1995. http://dx.doi.org/10.1117/12.203611.

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Tucker, David, Ayyakkannu Manivannan, Dan Haynes, et al. "Evaluating Methods for Infiltration of LSCF Cathodes With Mixed Electric/Ionic Conductors for Improved Oxygen Exchange." In ASME 2010 8th International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2010. http://dx.doi.org/10.1115/fuelcell2010-33214.

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Infiltration methods for improving lanthanum strontium cobalt ferrite (LSCF) cathode performance through catalyst surface modification were evaluated at the U.S. Department of Energy, National Energy Technology Laboratory. Infiltration of mixed conductors into LSCF cathodes of solid oxide fuel cells promises a low cost method of improving oxygen exchange and performance in these materials at lower temperatures. LSCF cathodes on Nickel-Yttria Stabilized Zirconia (Ni-YSZ) anode supported cells were infiltrated with strontium-doped lanthanum zirconate (LSZ) pyrochlores using two methods. An aqueo
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Takeyoshi Uchida, Tsuneo Kikuchi, Takurou Murakami, Norimichi Kawashima, and Shinichi Takeuchi. "Effect of surface modification of titanium substrate by anodic oxidation on hydrothermally synthesized PZT poly-crystalline film." In 2008 IEEE Ultrasonics Symposium (IUS). IEEE, 2008. http://dx.doi.org/10.1109/ultsym.2008.0525.

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Safaei, Mohsen, and Steven R. Anton. "Sensing and Energy Harvesting Performance, and Fatigue Life of Embedded Piezoelectric Transducer in Total Knee Arthroplasty." In ASME 2016 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/smasis2016-9216.

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Growing demands for Total Knee Arthroplasty (TKA) and also total knee revision surgery combined with the cost, risk, and complication of the surgery have led to numerus attempts to improve surgical techniques, implant design, and postoperative orthopedic therapies. Although abundant information about knee function and reaction forces and moments have been provided by researchers through biomechanical models, cadaver testing, in-vitro testing, and limited in-vivo measurements, rigorous real-time in-vivo data from knee implants is still required to improve the performance of TKAs. Instrumented k
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