Piezoelectric Nanoparticles: Piezoelectric Performance of Cubic-Phase BaTiO3
 Nanoparticles Vertically Aligned via Electric Field (Adv. Sustainable Syst. 2/2018)

The influence of uniaxial prestress on dielectric and piezoelectric performance was studied for soft lead zirconate titanate piezoceramics. High electric field induced polarization and longitudinal/transverse strain were measured at different compression preload levels of up to −400 MPa. The parameters evaluated included polarization/strain outputs, dielectric permittivity, piezoelectric constants, and dissipation energy as a function of the mechanical preload and electric-field strength. The results indicate a significant enhancement of the dielectric and piezoelectric performance within a certain prestress loading range. At much higher stress levels, the predominant mechanical depolarization effect makes the material exhibit hardly any piezoeffect. However, the enhanced performance achieved by a small stress preload is accompanied by an unfavorable increased hysteresis, and consequently, increased energy loss, which is attributed to a larger extrinsic contribution due to more non-180° domain switching induced by the combined electromechanical load.

Download Full-text

Smectic C to Cubic Phase Transition of 4′-n-Docosyloxy-3′-nitrobiphenyl-4-carboxylic Acid (ANBC-22) and Alternating-Current Electric Field Effect

The Journal of Physical Chemistry B ◽

10.1021/jp806972x ◽

2009 ◽

Vol 113 (3) ◽

pp. 640-646 ◽

Cited By ~ 6

Author(s):

Shoichi Kutsumizu ◽

Kouhei Hosoyama ◽

Makoto Yamada ◽

Katsufumi Tanaka ◽

Ryuichi Akiyama ◽

...

Keyword(s):

Phase Transition ◽

Carboxylic Acid ◽

Electric Field ◽

Field Effect ◽

Alternating Current ◽

Cubic Phase ◽

Electric Field Effect ◽

Smectic C ◽

Current Electric Field

Download Full-text

Synthesis, Characterization and Dielectric Properties of BaTiO3 Nanoparticles

International Journal of Nanoscience ◽

10.1142/s0219581x19500017 ◽

2019 ◽

Vol 19 (01) ◽

pp. 1950001

Author(s):

Azra Haroon ◽

Prabhakar Rai ◽

Imran Uddin

Keyword(s):

Sol Gel ◽

Broad Band ◽

Exothermic Peak ◽

Cubic Phase ◽

Intensity Maximum ◽

Visible Spectra ◽

Gel Technique ◽

Band Gap Narrowing ◽

Batio3 Nanoparticles ◽

Xrd And Tem

Barium titanate (BaTiO[Formula: see text] nanoparticles having small tetragonality were prepared via sol–gel technique followed by post-calcinations at 800∘C. The tetragonal phase was confirmed by XRD and TEM measurements. The obtained nanoparticles were quasi-spherical in shape with particle size lying between 30[Formula: see text]nm and 35[Formula: see text]nm, as obtained by TEM. The prepared sample was further characterized by TGA, DSC, FTIR, UV-Vis and PL spectroscopy. The low tetragonality of the obtained nanoparticles accounts for the absence of endothermic–exothermic peak in the DSC curve. The UV-Vis spectrum reveals band gap narrowing and the PL spectrum shows a broad band covering a large part of the visible spectra with the PL intensity maximum at 568[Formula: see text]nm. The dielectric and electrical properties were studied using LCR and Two probe method, and it shows a decrease in the permittivity as well as the tetragonal to cubic phase transition temperature.

Download Full-text

Scalable electric-field-assisted fabrication of vertically aligned carbon nanotube membranes with flow enhancement

Carbon ◽

10.1016/j.carbon.2019.10.012 ◽

2020 ◽

Vol 157 ◽

pp. 208-216 ◽

Cited By ~ 4

Author(s):

Richard J. Castellano ◽

Robert F. Praino ◽

Eric R. Meshot ◽

Chiatai Chen ◽

Francesco Fornasiero ◽

...

Keyword(s):

Carbon Nanotube ◽

Electric Field ◽

Nanotube Membranes ◽

Carbon Nanotube Membranes ◽

Vertically Aligned ◽

Flow Enhancement

Download Full-text

Role of Negative Electric Field Biasing on Growth of Vertically Aligned Carbon Nanotubes Using Chemical Vapor Deposition

Japanese Journal of Applied Physics ◽

10.1143/jjap.47.7436 ◽

2008 ◽

Vol 47 (9) ◽

pp. 7436-7439 ◽

Cited By ~ 12

Author(s):

Takafumi Matsuda ◽

Marcel Mesko ◽

Tomokazu Ishikawa ◽

Jun Sato ◽

Akihisa Ogino ◽

...

Keyword(s):

Carbon Nanotubes ◽

Chemical Vapor Deposition ◽

Electric Field ◽

Vapor Deposition ◽

Chemical Vapor ◽

Vertically Aligned Carbon Nanotubes ◽

Aligned Carbon Nanotubes ◽

Vertically Aligned ◽

Negative Electric Field

Download Full-text

Preparation of vertically aligned ZnO crystal rods in aqueous solution at external electric field

Materials Science-Poland ◽

10.2478/s13536-013-0191-8 ◽

2014 ◽

Vol 32 (2) ◽

pp. 157-163 ◽

Cited By ~ 1

Author(s):

B. Prijamboedi ◽

E. Maryanti ◽

T. Haryati

Keyword(s):

Aqueous Solution ◽

Electric Field ◽

External Electric Field ◽

Indium Tin Oxide ◽

Room Temperature ◽

Negative Electrode ◽

Glass Substrates ◽

Ito Glass ◽

Vertically Aligned ◽

Zno Crystal

AbstractIn this study, an external electric field was used to facilitate the growth of vertically aligned ZnO crystal rods on the surface of indium tin oxide (ITO) glass substrates in an aqueous solution. We used Zn(NO3) and C6H12N4 as precursor and reagent. We found that the external electric field generated by DC potential of 5 kV between two electrodes that were placed outside the bottle could facilitate the growth of homogeneous, high density and vertically aligned ZnO crystal rods. Position of the substrate during the growth of crystal was found to be important to obtain well aligned crystal. The crystals that were grown near the negative electrode had the best properties. Photoluminescence measurement at room temperature revealed sharp peaks at around 360 and 380 nm and a broad peak around 420 nm that indicated good properties of ZnO crystals grown with external electric field.

Download Full-text

Very Black Infrared Detector from Vertically Aligned Carbon Nanotubes and Electric-Field Poling of Lithium Tantalate

Nano Letters ◽

10.1021/nl100582j ◽

2010 ◽

Vol 10 (9) ◽

pp. 3261-3266 ◽

Cited By ~ 103

Author(s):

John Lehman ◽

Aric Sanders ◽

Leonard Hanssen ◽

Boris Wilthan ◽

Jinan Zeng ◽

...

Keyword(s):

Carbon Nanotubes ◽

Electric Field ◽

Infrared Detector ◽

Lithium Tantalate ◽

Vertically Aligned Carbon Nanotubes ◽

Aligned Carbon Nanotubes ◽

Vertically Aligned ◽

Electric Field Poling

Download Full-text

Temperature and Electric Field Dependent Phase Transformations in [001] PMN-PT Single Crystal

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.875.55 ◽

2021 ◽

Vol 875 ◽

pp. 55-59

Author(s):

Ghulam Shabbir ◽

Ahmad H. Qureshi

Keyword(s):

Phase Transition ◽

Phase Diagram ◽

Electric Field ◽

Single Crystal ◽

Cubic Phase ◽

Zero Field ◽

Field Phase ◽

Phase Transition Temperatures ◽

Field Dependent ◽

Oriented Single Crystal

The capacitance of (1-x)Pb(Mg1/3Nb2/3)O3-xPbTiO3 (PMN-xPT) [001]-oriented single crystal was examined as a function of temperature and applied external dc electric field. The phase transition temperatures under the applied electric field were measured upon cooling the crystal (zero-field heating field-cooling condition) from paraelectric cubic phase. From these data, temperature versus electric field phase diagram of PMN-xPT crystal have been constructed and discussed.

Download Full-text