Ultrahigh piezoelectric coefficient of a lead-free K0.5Na0.5NbO3-based single crystal fabricated by a simple seed-free solid-state growth method

2019 ◽  
Vol 7 (47) ◽  
pp. 14845-14854 ◽  
Author(s):  
Minhong Jiang ◽  
Jingwei Zhang ◽  
Guanghui Rao ◽  
Dedong Li ◽  
Clive A. Randall ◽  
...  
Keyword(s):  
Solid State ◽  
Single Crystal ◽  
Piezoelectric Coefficient ◽  
Lead Free ◽  
Growth Method ◽  
State Growth

KNN-based crystals with ultrahigh piezoelectric coefficients (d33 = 1050 pC N−1, and d33* = 2290 pm V−1) were fabricated.

Seed-Free Solid-State Growth of Large Lead-Free Piezoelectric Single Crystals: (Na1/2K1/2)NbO3

2015 ◽  
Vol 98 (10) ◽  
pp. 2988-2996 ◽  
Author(s):  
Minhong Jiang ◽  
Clive A. Randall ◽  
Hanzheng Guo ◽  
Guanghui Rao ◽  
Rong Tu ◽  
...  
Keyword(s):  
Solid State ◽  
Single Crystals ◽  
Lead Free ◽  
State Growth

scholarly journals Comparative study on the performance of piezo-active 1–3-type composites with lead-free components

2021 ◽  
pp. 2160003
Author(s):  
Ashura N. Isaeva ◽  
Vitaly Yu. Topolov
Keyword(s):  
Single Crystal ◽  
Piezoelectric Coefficient ◽  
Piezoelectric Properties ◽  
Volume Fraction ◽  
Lead Free ◽  
Figures Of Merit ◽  
Piezoelectric Energy ◽  
Harvesting Systems ◽  
Porous Matrices ◽  
Large Anisotropy

Piezoelectric properties and related figures of merit are studied in novel 1–3-type composites based on ferroelectric domain-engineered lead-free single crystal with the relatively large longitudinal piezoelectric coefficient [Formula: see text]. Relationships between the piezoelectric properties and the set of figures of merit are analyzed for the 1–3 and 1–3–0 composites that contain the same single-crystal and polymer components. For a composite characterized by 1–3–0 connectivity, an influence of a porous piezo-passive matrix on the figures of merit and their volume-fraction behavior is considered additionally. A large anisotropy of figures of merit is observed in the 1–3–0 composite with specific porous matrices. A diagram is put forward to show volume-fraction regions of the large anisotropy of figures of merit of the studied 1–3–0 composite. Due to large figures of merit and their considerable anisotropy, the studied lead-free composites can be applied in piezoelectric energy-harvesting systems, sensors, transducers, and so on.

scholarly journals Precursor Phenomena of Barium Titanate Single Crystals Grown Using a Solid-State Single Crystal Growth Method Studied with Inelastic Brillouin Light Scattering and Birefringence Measurements

Molecules ◽  
2018 ◽  
Vol 23 (12) ◽  
pp. 3171 ◽  
Author(s):  
Soo Han Oh ◽  
Jae-Hyeon Ko ◽  
Ho-Yong Lee ◽  
Iwona Lazar ◽  
Krystian Roleder
Keyword(s):  
Crystal Growth ◽  
Solid State ◽  
Barium Titanate ◽  
Single Crystal ◽  
Single Crystals ◽  
Melting Process ◽  
Point Of View ◽  
Crystal Quality ◽  
Cubic Phase ◽  
Growth Method

The nature of precursor phenomena in the paraelectric phase of ferroelectrics is one of the main questions to be resolved from a fundamental point of view. Barium titanate (BaTiO3) is one of the most representative perovskite-structured ferroelectrics intensively studied until now. The pretransitional behavior of BaTiO3 single crystal grown using a solid-state crystal growth (SSCG) method was investigated for the first time and compared to previous results. There is no melting process in the SSCG method, thus the crystal grown using a SSCG method have inherent higher levels of impurity and defect concentrations, which is a good candidate for investigating the effect of crystal quality on the precursor phenomena. The acoustic, dielectric, and piezoelectric properties, as well as birefringence, of the SSCG-grown BaTiO3 were examined over a wide temperature range. Especially, the acoustic phonon behavior was investigated in terms of Brillouin spectroscopy, which is a complementary technique to Raman spectroscopy. The obtained precursor anomalies of the SSCG-grown BaTiO3 in the cubic phase were similar to those of other single crystals, in particular, of high-quality single crystal grown by top-seeded solution growth method. These results clearly indicate that the observed precursor phenomena are common and intrinsic effect irrespective of the crystal quality.

Compositional and Structural Study of a (K0.5Na0.5)NbO3 Single Crystal Prepared by Solid State Crystal Growth

2009 ◽  
Vol 15 (5) ◽  
pp. 435-440 ◽  
Author(s):  
Andreja Benčan ◽  
Elena Tchernychova ◽  
Matjaž Godec ◽  
John Fisher ◽  
Marija Kosec
Keyword(s):  
Crystal Growth ◽  
Solid State ◽  
Single Crystal ◽  
Single Crystals ◽  
Domain Structure ◽  
Chemical Homogeneity ◽  
Electron Microscopies ◽  
Transmission Electron ◽  
Composition And Structure ◽  
Growth Method

AbstractIn this work we investigated the chemical composition and structure of (K0.5Na0.5)NbO3 (KNN) single crystals grown by the solid state crystal growth method. The optical, scanning, and transmission electron microscopies were employed for the analysis of the chemical homogeneity and domain structure of the KNN crystal. No compositional inhomogeneities within experimental error were encountered in the KNN single crystals. The domain structure of the KNN single crystal, with a monoclinic unit cell, is composed of large 90° domains of up to 100 μm width, which further consist of smaller 180° domains with widths from 50 to 300 nm.

Solid-state-growth of lead-free piezoelectric (Na1/2Bi1/2)TiO3-CaTiO3 single crystals and their characterization

2017 ◽  
Vol 223 ◽  
pp. 109-119 ◽  
Author(s):  
Hengyang Sun ◽  
John G. Fisher ◽  
Su-Hyun Moon ◽  
Huyen Tran Tran ◽  
Jong-Sook Lee ◽  
...  
Keyword(s):  
Solid State ◽  
Single Crystals ◽  
Lead Free ◽  
State Growth

Solid-state growth of nickel silicide nanowire by the metal-induced growth method

2006 ◽  
Vol 21 (11) ◽  
pp. 2936-2940 ◽  
Author(s):  
Joondong Kim ◽  
Jong-Uk Bae ◽  
Wayne A. Anderson ◽  
Hyun-Mi Kim ◽  
Ki-Bum Kim
Keyword(s):  
Solid State ◽  
Catalyst Layer ◽  
Nickel Silicide ◽  
Metal Species ◽  
Dominant Factor ◽  
Silicide Layer ◽  
Deposited Metal ◽  
Growth Method ◽  
Metal Induced Growth ◽  
State Growth

Unique nanowire growth was accomplished at 575 °C by the metal-induced growth (MIG) method. This involved a spontaneous reaction between metal and Si. The deposited metal worked as a catalyst layer to grow nanowires in the solid state. Various metals (Ni, Co, and Pd) were used in MIG nanowire fabrication, and the Ni-induced case was successful in demonstrating that metal species should be the dominant factor for growing nanowires. The Ni to Si composition was studied by energy dispersive spectroscopy showing the Ni diffusion inside the nanowire as well as the Ni silicide layer. The practical application of the MIG nanowire was proved by fabricating nanoscale contacts.

Effects of minor alloying additive on the shear strength of Sn-58Bi solder joint

2013 ◽  
Vol 2013 (1) ◽  
pp. 000100-000103 ◽  
Author(s):  
Omid Mokhtari ◽  
Hiroshi Nishikawa
Keyword(s):  
Solid State ◽  
Solder Joint ◽  
Compound Layer ◽  
Layer Growth ◽  
Lead Free ◽  
Brittle Behavior ◽  
Phase Coarsening ◽  
Before And After ◽  
State Growth ◽  
Lead Free Solders

The use of Pb has been limited in the electronic industry because of the toxicity of lead. As the result, the research and development activities in developing lead-free solders have been accelerated and some lead-free solders were introduced as alternative. Sn-Bi-based alloys are an alternative to replace Pb-based solders in the low temperature ranges. However, Sn-Bi-based solders show brittle behavior in both the bulk and the interface. Generally, the addition of impurity elements to the solders can improve the ductility of the solder joint in both the bulk and the interface by refining the solder microstructure and suppressing the intermetallics at the interface, respectively. In this study, the effect of third elements, i.e., Ni and In (1 and 0.5wt.%) on the microstructure of the Sn-58Bi solder and thickness of the interface between Sn-58Bi solder and Cu substrate were investigated. Solid state IMC compound layer growth was also examined following the thermal aging of the solder joint. Results after aging show that minor added elements were effective in suppressing the intermetallics at the interface during solid state growth. The results also show that the added In was highly effective in limiting the Bi phase coarsening. Mechanical properties of solder joints, before and after heat treatment, were also investigated by shear and micro-vickers tests.

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