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Journal articles on the topic 'Lanthanum Modification of PZT'

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Published: 7 June 2025

Last updated: 17 July 2025

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1

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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2

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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3

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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4

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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5

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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6

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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7

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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8

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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9

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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10

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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11

Tuan Ab Rashid, Tuan Nur Izzah, Zainal Arifin Ahmad, Julie Juliewatty Mohamed, and Hasmaliza Mohamad. "Fabrication of Lanthanum and Strontium Doped PZT Ceramics Using Solid State Reaction Method." Materials Science Forum 888 (March 2017): 62–65. http://dx.doi.org/10.4028/www.scientific.net/msf.888.62.

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Lead Zirconate Titanate (PZT) undoped and doped was prepared by using solid state reaction method. In this paper, PZT is doped with another elements with is La3+ and Sr2+ in order to enhance the properties of PZT. The samples were prepared via high planetary mill which is can skip the calcination process that can cause of PbO loss during firing. With the help of x-ray diffraction (XRD) and scanning electron microscopy (SEM), the formation of perovskite structure into newly modified ceramics was investigated and the grain growth of pure PZT and doped PZT were also investigated which is can enha

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12

Chentir, M. T., E. Bouyssou, L. Ventura, G. Guégan, and C. Anceau. "Impact of Lanthanum on PZT Resistance Degradation." Ferroelectrics 362, no. 1 (2008): 123–27. http://dx.doi.org/10.1080/00150190802006806.

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13

Azree Jamil, Mohammad Amerul, Johar Banjuraizah, Shing Fhan Khor, and Zainal Arifin Ahmad. "Synthesis and Characterization of PZT Doped Lanthanum, Neodymium and Yttrium Using Sol Gel Method." Materials Science Forum 840 (January 2016): 66–70. http://dx.doi.org/10.4028/www.scientific.net/msf.840.66.

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PZT ceramic is synthesis by using sol gel method.Introducing a dopant to the pure PZT can help to enhance the properties of the piezoelectric ceramic. The effects of sintering temperature on phase formation, densification of the ceramics have been investigated using XRD, SEM and Archimedes method. The bulk density and porosity of PZT decreased as the sintering temperature increased.

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14

Peláiz-Barranco, A., R. López-Noda, and F. Calderón-Piñar. "AC behavior in lanthanum modified PZT ferroelectric ceramics." physica status solidi (c) 2, no. 10 (2005): 3669–72. http://dx.doi.org/10.1002/pssc.200461706.

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15

McNally, Frank, Jin Hyeok Kim, and F. F. Lange. "Fatigue Properties of Lanthanum Strontium Manganate–lead Zirconate Titanate Epitaxial Thin Film Heterostructures Produced by a Chemical Solution Deposition Method." Journal of Materials Research 15, no. 7 (2000): 1546–50. http://dx.doi.org/10.1557/jmr.2000.0221.

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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 barri

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16

AKSEL, ELENA, HUMBERTO FORONDA, KYLE A. CALHOUN, JACOB L. JONES, SILKE SCHAAB, and TORSTEN GRANZOW. "PROCESSING AND PROPERTIES OF Na0.5Bi0.5TiO3 PIEZOELECTRIC CERAMICS MODIFIED WITH La, Mn AND Fe." Functional Materials Letters 03, no. 01 (2010): 45–48. http://dx.doi.org/10.1142/s1793604710000877.

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Although a great deal of work has been done to understand defect chemistry in "soft" and "hard" PZT-based materials, there is little understanding of how defect chemistry influences the properties of lead-free piezoelectric materials. This paper reports a systematic investigation of doping on the ferroelectric and piezoelectric properties in Na 0.5 Bi 0.5 TiO 3 (NBT)-based ceramics. NBT-based ceramics have been synthesized by traditional solid state routes using several different dopants including lanthanum, manganese, and iron in 1 mol%. The addition of iron and manganese lead to an increase

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17

Bichurin, M. I., and V. M. Petrov. "Modeling of Magnetoelectric Interaction in Magnetostrictive-Piezoelectric Composites." Advances in Condensed Matter Physics 2012 (2012): 1–12. http://dx.doi.org/10.1155/2012/798310.

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The paper dwells on the theoretical modeling of magnetoelectric (ME) effect in layered and bulk composites based on magnetostrictive and piezoelectric materials. Our analysis rests on the simultaneous solution of elastodynamic or elastostatic and electro/magnetostatic equations. The expressions for ME coefficients as the functions of material parameters and volume fractions of components are obtained. Longitudinal, transverse, and in-plane cases are considered. The use of the offered model has allowed to present the ME effect in ferrite cobalt-barium titanate, ferrite cobalt-PZT, ferrite nicke

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18

Bahanurdin, Fatin Khairah, Muhammad Afif Sharhan Shu'aibon, Mohammad Hafizuddin Hj Jumali, Zainal Arifin Ahmad, and Julie Juliewatty Mohamed. "Effect of Lanthanum and Strontium Doped on PZT Properties Prepared via High Planetary Mill for Piezofan Application." Advanced Materials Research 1087 (February 2015): 172–76. http://dx.doi.org/10.4028/www.scientific.net/amr.1087.172.

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Lead Zirconate Titanate (PZT) ceramics are of great technological interest because of their excellent piezoelectric and ferroelectric properties. In this research, an effort will be made to enhance the PZT properties by doping with other elements. The objective of this research is to enhance the dielectric, hence increase the efficiency and performance of piezofan. Properties that piezoelectric fan should have are high mechanical piezoelectric coupling factor, high dielectric constant, easily polarized and high piezoelectric charge constant. Soft and isovalent dopant was a very suitable candid

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19

Mandeljc, Mira, Marija Kosec, Barbara Malič, and Zoran Samardzija. "Low temperature processing of lanthanum doped PZT thin films." Integrated Ferroelectrics 30, no. 1-4 (2000): 149–56. http://dx.doi.org/10.1080/10584580008222263.

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20

Choi, Jong-Jin, Gun-Tae Park, and Hyoun-Ee Kim. "Electrooptic properties of highly oriented Pb(Zr,Ti)O3 film grown on glass substrate using lanthanum nitrate as a buffer layer." Journal of Materials Research 19, no. 11 (2004): 3152–56. http://dx.doi.org/10.1557/jmr.2004.0432.

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Materials with preferred orientation exhibit unique properties that are frequently improved in comparison with those that are randomly oriented. Optical waveguide devices require high-quality single-crystal–like thin films because of their low optical propagation loss and their near–single-crystal properties. The growth mechanisms of textured films on non-lattice matched amorphous substrates, such as glass, are different from those on single-crystal substrates or the surface of a metal electrode. In this study, highly (100) oriented Pb(Zr,Ti)O3 PZT films were grown on an amorphous substrate by

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21

Chang, Jhing-Fang, and Seshu B. Desua. "Effects of dopants in PZT films." Journal of Materials Research 9, no. 4 (1994): 955–69. http://dx.doi.org/10.1557/jmr.1994.0955.

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Undoped and lanthanide (La and Nd) doped Pb(ZrxTi1-x)03, i.e., PZT, ferroelectric thin films were prepared by metallorganic decomposition (MOD) and spin-coating. The precursors for making the undoped PZT films were derived from lead acetate, zirconium n-propoxide, and titanium isopropoxide. In addition, lanthanum acetylacetonate and neodymium acetate were introduced into the precursor solution to accomplish the doping of the corresponding elements. Both undoped and doped PZT films were coated onto Pt/Ti/Si02/Si and single-crystal sapphire substrates to various thicknesses and annealed at a ran

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22

Benhadjala, Warda, Gwenael Le Rhun, Christel Dieppedale, et al. "Sol-gel doped-PZT thin films for integrated tunable capacitors." International Symposium on Microelectronics 2015, no. 1 (2015): 000256–61. http://dx.doi.org/10.4071/isom-2015-wa41.

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Integrated metal-insulator-metal (MIM) capacitors using sol-gel PZT doped with lanthanum (La, PLZT), manganese (Mn, PMZT) and niobium (Nb, PNZT) were successfully processed and characterized for tunable applications. Dielectric properties of doped-PZT were investigated and compared to those of pure PZT. Wafer-level measurements were conducted with a particular attention on tunability evaluation under DC bias voltage. Tunability, leakage current density and breakdown voltage of pure PZT thin films were 77.6% (i.e. 4.5:1) at 10kHz/10V, 4.8.10−5 A/cm2 at 870kV and 37.5V (i.e. 1.63 MV/cm) respecti

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23

Bochenek, Dariusz, Przemysław Niemiec, and Grzegorz Dercz. "The Effect of Mixed Doping on the Microstructure and Electrophysical Parameters of the Multicomponent PZT-Type Ceramics." Materials 13, no. 8 (2020): 1996. http://dx.doi.org/10.3390/ma13081996.

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This work shows the influence of admixture on the basic properties of the multicomponent PbZr1−xTixO3 (PZT)-type ceramics. It presents the results of four compositions of PZT-type material with the general chemical formula, Pb0.99M0.01((Zr0.49Ti0.51)0.95Mn0.021Sb0.016W0.013)0.9975O3, where, in the M position, a donor admixture was introduced, i.e., samarium (Sm3+), gadolinium (Gd3+), dysprosium (Dy3+) or lanthanum (La3+). The compositions of the PZT-type ceramics were obtained through the classic ceramic method, as a result of the synthesis of simple oxides. The X-ray diffraction (XRD) pattern

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24

Roy, Subir, Sandip Bysakh, and Jandhyala Subrahmanyam. "Metastable face-centered cubic lead zirconate titanate (PZT) and lead lanthanum zirconate titanate (PLZT) nanocrystals synthesized by auto-ignition of metal–polymer gel." Journal of Materials Research 23, no. 3 (2008): 719–24. http://dx.doi.org/10.1557/jmr.2008.0099.

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Nanocrystalline lead zirconate titanate (PZT) and lead lanthanum zirconate titanate (PLZT) have been synthesized in powder form by a single-step auto-ignition of metal–polymer gel precursor. The nanocrystalline powders were characterized using analytical transmission electron microscopy (TEM) equipped with an energy-dispersive x-ray spectrometer (EDXS) for composition analysis. For both PZT and PLZT, nanoparticles of sizes as low as 1–5 nm along with larger nanoparticles of sizes up to 30 nm are observed in the TEM. The selected-area diffraction (SAD) patterns from the nanoparticles revealed a

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25

Satoh, Keisuke, Akio Sugama, Masatoshi Ishii, Masao Kondo, and Kazuaki Kurihara. "Crystal Phase and Orientation Dependence of Electro-Optic Effect in Epitaxial PLZT an PZT Films." Key Engineering Materials 350 (October 2007): 99–102. http://dx.doi.org/10.4028/www.scientific.net/kem.350.99.

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Lanthanum-modified lead zirconate titanate and lead zirconate titanate epitaxial films with (100) and (111) orientations were grown respectively on (100) and (111) niobium, lending conductivity to strontium titanate through chemical solution deposition. This study investigated changes in the ordinary and extraordinary refractive index no and ne induced in these films by an electric field using the prism-coupling method. In the (100) epitaxial PZT 30/70 film, anisotropic electro-optic effects arise from the Pockels effect. The isotropic electro-optic effect, which is no = ne , was achieved on (

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26

Sun, Yunhan, Xiaoning Wang, Qingxiu Jia, and Jian Yang. "Study on Organic Modification of Lanthanum Oxide." Journal of Physics: Conference Series 2194, no. 1 (2022): 012032. http://dx.doi.org/10.1088/1742-6596/2194/1/012032.

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Abstract In this paper, lanthanum oxide was modified by silane coupling agent (KH560), titanate coupler NDZ-201 and dopamine hydrochloride (DP). The microstructure and chemical structure of modified La2O3 were characterized by scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS), and the dispersion of modified lanthanum oxide in polypropylene (PP) was investigated. The results show that the three modifiers can improve the organic properties of lanthanum oxide, and the interfacial compatibility between dopamine modified La2O3 and PP is better than the other two modifier

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27

Nguyen Thanh, Thuy, Tung Nguyen Van, Hung Nguyen Trong, and Minh Cao Duy. "Hydrothermal synthesis and characteristics of lanthanumdoped pb(Zr₀.₆₅Ti ₀.₃₅)O₃ ceramics." Nuclear Science and Technology 8, no. 3 (2021): 14–19. http://dx.doi.org/10.53747/jnst.v8i3.69.

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Lanthanum-doped lead zirconate titanate (PLZT) powders were synthesized using thehydrothermal method. The influence of pH, reaction temperature and time, lanthanum concentration on the formation and characteristics of PLZT were investigated. Obtained powders were investigated using X-ray diffraction analysis (XRD), scanning electron microscopy (SEM) techniques and a dielectric analyzer. The results showed that Pb1-xLax(Zr0.65Ti0.35)O3 with x= 0.0 – 0.1 were well formed under conditions: pH≥13, reaction time of 12hrs, reaction temperature of 180oC. Dielectric constant of PLZT is higher than PZT

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Tang, Dong Yan, Xiao Hong Zhang, Ying Jie Qiao, and Y. Li. "Preparation and Dielectric Properties of Oriented PZT Thin Films by LB Technique." Key Engineering Materials 434-435 (March 2010): 423–25. http://dx.doi.org/10.4028/www.scientific.net/kem.434-435.423.

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The oriented La modified PZT thin films were prepared on Pt/Ti/SiO2/Si substrate by the LB technique. The pre-sintering temperatures and the annealing temperatures for La modified PZT were determined by TG-DTA curves and XRD detect results. XRD detection of PZT and PZT with different La amount illustrated the crystal constructions and the effects by modification. The AFM observation of PLZT thin films with organic acid indicated that the LB technique could obtain smooth and flat film with the deposition of PLZT particles within nanometers on substrate. The detection results of the electrical p

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29

Chentir, M. T., E. Bouyssou, L. Ventura, G. Guégan, and C. Anceau. "ELECTRICAL CHARACTERIZATION AND RELIABILITY OF LANTHANUM DOPED PZT THIN FILMS CAPACITORS." Integrated Ferroelectrics 96, no. 1 (2008): 75–81. http://dx.doi.org/10.1080/10584580802100960.

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30

Zeng, Xia, Xiyun He, Wenxiu Cheng, Xinsen Zheng, and Pingsun Qiu. "Dielectric and ferroelectric properties of PZN–PZT ceramics with lanthanum doping." Journal of Alloys and Compounds 485, no. 1-2 (2009): 843–47. http://dx.doi.org/10.1016/j.jallcom.2009.06.106.

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31

Lee, Seung-Ho, Chang-Bun Yoon, Seung-Beom Seo, and Hyoun-Ee Kim. "Effect of lanthanum on the piezoelectric properties of lead zirconate titanate–lead zinc niobate ceramics." Journal of Materials Research 18, no. 8 (2003): 1765–70. http://dx.doi.org/10.1557/jmr.2003.0245.

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The effect of lanthanum (La) addition on the piezoelectric properties of lead zirconate titanate–lead zinc niobate (PZT–PZN) was investigated. When small amounts of La were added to the 0.82PZT–0.18PZN, the phase of the specimen changed from rhombohedral to tetragonal and the grain size was steadily reduced. To retain the morphotropic phase boundary (MPB) condition of the specimens with La contents of up to 4 mol%, the Zr/Ti ratio in the PZT was increased to 54/46. When more than 5 mol% La was added, pyrochlore phases were formed, and the piezoelectric properties were reduced. Therefore, the o

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32

Jana, P., P. S. Jayan, S. Mandal, and Koushik Biswas. "Sintering and Microstructural Modification of Seeded and Neodymium Doped Lanthanum Hexaaluminate." Materials Science Forum 835 (January 2016): 237–50. http://dx.doi.org/10.4028/www.scientific.net/msf.835.237.

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The effect of (i) heterogeneous nucleation by seeding or (ii) doping with neodymium on the formation of lanthanum hexaaluminate was studied during sol to gel conversion. The resultant dried gels were calcined at various temperatures starting from 1100°C to 1600°C for 2 h to study the phase evolution and microstructure.The combined effects of advanced sol gel processing and heterogeneous nucleation promoted the formation of lanthanum hexaaluminate phase at lower temperature (1200°C) than the conventional routes (1300°C). Lanthanum hexaaluminate phase was detected at 1200°C and 1300°C in seeded

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33

Singh, Virendra, H. H. Kumar, D. K. Kharat, Samik Hait, and M. P. Kulkarni. "Effect of Lanthanum substitution on ferroelectric properties of Niobium doped PZT ceramics." Materials Letters 60, no. 24 (2006): 2964–68. http://dx.doi.org/10.1016/j.matlet.2006.02.041.

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34

Sahoo, Benudhar, and Prasanta Kumar Panda. "Effect of lanthanum, neodymium on piezoelectric, dielectric and ferroelectric properties of PZT." Journal of Advanced Ceramics 2, no. 1 (2013): 37–41. http://dx.doi.org/10.1007/s40145-013-0039-z.

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Kalem, Volkan, İbrahim Çam, and Muharrem Timuçin. "Dielectric and piezoelectric properties of PZT ceramics doped with strontium and lanthanum." Ceramics International 37, no. 4 (2011): 1265–75. http://dx.doi.org/10.1016/j.ceramint.2010.12.003.

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Атанова, А. В., О. М. Жигалина, Д. Н. Хмеленин, Д. С. Серегин та К. А. Воротилов. "Кристаллизация слоев в гетероструктурах PZT/LNO/Si". Физика твердого тела 61, № 12 (2019): 2442. http://dx.doi.org/10.21883/ftt.2019.12.48575.03ks.

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The microstructure of the layers of the Pb(Zr0.52Ti0.48)O3–LaNiO3–Si composition and LaNiO3 thin films obtained by chemical solution deposition was studied using transmission electron microscopy. It was revealed that the polycrystalline, porous structure of LaNiO3 leads to a breakdown of the columnar structure of the lead zirconate titanate. The effect of heat treatment on the structure and phase composition of lanthanum nickelate is considered. It is shown that such morphological features of the structure of the LaNiO3 film, such as foliation, porosity and disorientation, are observed during

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Pang, Qianyi, Lanruo Han, and Xiang Yu. "Doping modification in lead-free piezoelectric ceramics." Highlights in Science, Engineering and Technology 55 (July 9, 2023): 166–75. http://dx.doi.org/10.54097/hset.v55i.9952.

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Piezoelectric ceramics are functional information ceramic materials that can convert mechanical and electrical energy into each other. They are widely used in high-tech fields, such as the electronics industry, machinery, and aerospace. Currently, Pb(ZrTi)O3 (PZT) piezoelectric materials are most commonly used, but the main component, PbO, is toxic and volatile during production and manufacturing, thus causing certain damage to human health and the environment. Therefore, research on green and environmentally friendly lead-free piezoelectric materials has been attracting much attention. This p

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Kuentz, Hugo, Baba Wagué, Nicolas Vaxelaire, et al. "Effect of electrically induced cracks on the properties of PZT thin film capacitors." Applied Physics Letters 121, no. 23 (2022): 232901. http://dx.doi.org/10.1063/5.0127111.

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We present a study of the effect of electrically induced cracks on both the ferroelectric and piezoelectric properties of Pt/PbZr0.52Ti0.48O3 (PZT)/Pt capacitors and correlations with domain structures of PZT films. Above a threshold bipolar electric field, cracks appear inside the PZT layer thickness leading to an increase in the ferroelectric polarization (+50% for the remnant polarization, from 16 to 25 μC/cm2) and the longitudinal piezoelectric coefficient d33,f (from ∼150 to ∼220 pm/V). The use of x-ray diffraction during in situ biasing provides direct evidence for a modification of the

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Muñoz-Saldaña, J., M. J. Hoffmann, and G. A. Schneider. "Ferroelectric domains in coarse-grained lead zirconate titanate ceramics characterized by scanning force microscopy." Journal of Materials Research 18, no. 8 (2003): 1777–86. http://dx.doi.org/10.1557/jmr.2003.0247.

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Ferroelectric domain configurations in silver- and lanthanum-doped lead zirconate titanate (PZT) ceramics were characterized by scanning force microscopy using contact as well as piezoelectric response force [i.e., piezoelectric force microscopy (PFM)] modes. Coarse crystallites of hard and soft PZT ceramics (12 μm in Ag-PZT and 30 μm in La-PZT average grain size, respectively) with surface oriented in the {001} planes were chosen to characterize the domain configuration. Results show the conventional right-angled domain structures, which correspond to the {110} twin-related 90° and 180° domai

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Kathiresan, M., Jain Jose, E. Varadarajan, et al. "Optimization of piezoelectric MEMS process on Sr and La co-doped PZT thin films." Journal of Advanced Dielectrics 10, no. 04 (2020): 2050010. http://dx.doi.org/10.1142/s2010135x20500101.

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Doped lead–zirconate–titanate (PZT) thin films are preferred for the development of micro–electro–mechanical systems (MEMS)-based acoustic sensors because of their inherent higher dielectric and piezoelectric coefficients. Patterning process is used to develop such MEMS devices which is highly complex even for undoped PZT thin films; therefore, the problem is further cumbersome for doped PZT thin films due to the presence of added dopant elements and their associated chemistry. This paper presents patterning of strontium (Sr) and lanthanum (La) co-doped PZT thin film (PSLZT) deposited on plati

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Cheng, S. C., T. Su, and S. Trolier-McKinstry. "Use of Electron Diffraction for Determining the Orientation of Rapid Thermally Annealed Lead Zirconate Titanate Thin Film On (111) Pt Coated Si Substrate." Microscopy and Microanalysis 5, S2 (1999): 828–29. http://dx.doi.org/10.1017/s1431927600017463.

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Lead zirconate titanate (PZT) is a perovskite-staictured material which is ferroelectric over most of the solid solution and which exhibits a range of electrical and electromechanical properties depending on the Zr/Ti ratio. Thin film PZT is currently being developed for piezoelectric actuators, ferroelectric memory devices and pyroelectric detectors. The ferroelectric properties and microstructures of the PZT films depend upon numerous processing parameters.In this research, sol-gel PZT films crystallized by rapid thermal annealing at 700°C for 30 seconds were investigated. A modification of

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Вольпяс, В. А., А. Б. Козырев, А. В. Тумаркин та ін. "Изменение элементного состава тонких пленок цирконата-титаната свинца в процессе ионно-плазменного осаждения: эксперимент и моделирование". Физика твердого тела 61, № 7 (2019): 1282. http://dx.doi.org/10.21883/ftt.2019.07.47838.388.

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AbstractThe element composition modification is experimentally studied in PZT thin films obtained via the RF magnetron sputtering with variable working gas pressure. The experimental data were interpreted through the statistic simulation of thermalization and diffusion of sprayed Pb, Zr, and Ti atoms during the ion-plasma deposition of PZT thin films. The simulation data are shown to adequately describe (within the limits of 5%) the change in element composition at various pressures of the gas environment. The study conducted enables one to produce PZT thin films with a set element composition

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Muhamad, L., M. A. Saparin, and H. Salleh. "Performance of a Piezoelectric Energy Harvester with Rubber Compound Modification." Journal of Physics: Conference Series 2721, no. 1 (2024): 012002. http://dx.doi.org/10.1088/1742-6596/2721/1/012002.

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Abstract Recently, there has been a significant increase in the research on Piezoelectric energy harvester. Piezoelectric energy harvester is capable of producing electrical charge when mechanically deformed. The application is to be used to power up mobile electronic. The common problem in the piezoelectric energy harvester is the material is brittle and causes fatigue failure at the same time the material is relatively costly. One of the method to address this problem is to add a rubber compound layer which can improve the flexibility and power output of the energy harvester. It can also imp

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Florêncio, Odila, Paulo Sergio Silva, José Antônio Eiras, Ducinei Garcia, and Eriton Rodrigo Botero. "Study of the Anelastic Behavior of PZT and PLZT Ferroelectric Ceramics." Defect and Diffusion Forum 326-328 (April 2012): 719–24. http://dx.doi.org/10.4028/www.scientific.net/ddf.326-328.719.

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The anelastic behavior of the ferroelectric ceramics (Pb)(Zr/Ti)O3(PZT) and (Pb/La)(Zr/Ti)O3(PLZT), with Zr/Ti = 65/35, La = 5 at.% and 8 at.%, was investigated in the region of the ferroelectric phase transitions. Anelastic spectroscopy experiments were performed in an acoustic elastometer system, operating in a kilohertz bandwidth, at temperatures rising from 300 K to 770 K, at a heating rate of 1 K/min, under pressure of 10-5mbar. Anelastic measurements on PZT showed only one anomaly, associated with the occurrence of a ferroelectric-paraelectric phase transition, while the PLZT data showed

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Wu, Aiying, and P. M. Vilarinho. "Nanostructure Analysis of Sol-gel PZT Thin Films Derived from Different Chemical Routes." Microscopy and Microanalysis 15, S3 (2009): 53–54. http://dx.doi.org/10.1017/s1431927609990729.

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AbstractLead zirconate - lead titanate (PZT) materials are commercially important piezoelectric and ferroelectrics in a wide range of applications, such as data storage (dynamic access and ferroelectric random access memories) and sensing and actuating devices. PZT with the morphotropic phase boundary composition offers the highest piezoelectric response and at the present there are no fullydeveloped alternative materials to PZT. The importance of PZT associated with the continuous requirements of device miniaturization, imposes the development of high quality PZT thin films with optimized pro

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Rema, K. P., A. S. Divya, and V. Kumar. "Influence of low lanthanum doping on the electrical characteristics of PZT(53/47)." Journal of Physics D: Applied Physics 42, no. 7 (2009): 075420. http://dx.doi.org/10.1088/0022-3727/42/7/075420.

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Kotova, N., Yu Podgorny, D. Seregin, A. Sigov, A. Vishnevskiy, and K. Vorotilov. "Effect of Lanthanum Doping on Leakage Currents of Sol-Gel PZT Thin Films." Ferroelectrics 465, no. 1 (2014): 54–59. http://dx.doi.org/10.1080/00150193.2014.893806.

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48

Deb, K. K. "Pyroelectric characteristics of a hot-pressed lanthanum-doped PZT (PLZT (8/40/60))." Materials Letters 5, no. 5-6 (1987): 222–26. http://dx.doi.org/10.1016/0167-577x(87)90015-2.

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Stashans, Arvids, and Frank Maldonado. "Quantum chemical investigation of lanthanum doping effects in tetragonal and rhombohedral PZT materials." International Journal of Quantum Chemistry 109, no. 7 (2009): 1576–83. http://dx.doi.org/10.1002/qua.21988.

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Salleh, Hanim, Mun Heng Lam, Linasuriani Muhamad, and Mohd Firdaus bin Jaafar. "Structural Modification Strategies to Improve Piezoelectric Energy Harvester Performance." Applied Mechanics and Materials 752-753 (April 2015): 934–40. http://dx.doi.org/10.4028/www.scientific.net/amm.752-753.934.

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Harvesting energy from vibrations has received massive attention due to it being a renewable energy source that has a wide range of applications. Over the years of development, there is always research to further improve and optimise piezoelectric energy harvesters. This paper presents work on improving piezoelectric energy harvesters based on the structural modifications. Four different strategies of structural modification are employed for optimization by using additional beam structure as well as incorporation of rubber layer. This work summarized the optimum performance of the strategies a

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