Effects of a new stacking method on characteristics of multilayered BaTiO3 thin film

Song, Mansuk; Lee, Yun Hi; Hahn, T. S.; Oh, Myung Hwan; Yoon, Ki Hyun

doi:10.1063/1.361208

Cited by 26 publications

(7 citation statements)

References 15 publications

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“…B ARIUM TITANATE (BaTiO 3 ) has been widely studied in several different forms, including powder, 1-3 bulk, 4-6 thin film, [7][8][9][10][11][12] and multilayer, [13][14][15] because of its excellent electronic and optical characteristics; these include high dielectric constant, transparency in visible wavelength, and high nonlinear optical susceptibility. To satisfy potential microelectronics applications, thin films of BaTiO 3 with good electrical and/or electro-optical properties are required.…”

Section: Introductionmentioning

confidence: 99%

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Gold‐Particle‐Enhanced Crystallite Growth of Thin Films of Barium Titanate Prepared by the Sol‐Gel Process

Masaki¹,

Koutzarov²,

Ruda³

et al. 1998

Journal of the American Ceramic Society

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The effects of gold-particle incorporation on the structure of barium titanate (BaTiO 3 ) thin films was investigated. BaTiO 3 thin films (110 nm thick) with different gold concentrations were prepared via sol-gel processing and analyzed using X-ray diffractometry. The diffraction results showed that the crystal structure of the thin films changed from predominantly the cubic phase to the tetragonal phase, and the crystallite size increased as the gold concentration increased. Possible mechanisms for the goldenhanced crystallization have been discussed.

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Section: Introductionmentioning

confidence: 99%

“…Several methods are suitable for the formation of thin films. Among these methods, sol-gel, [8][9][10][11] chemical vapor deposition, 7 and sputtering 12,13 processes are most widely favored. The sol-gel approach is arguably one of the easiest methods to obtain good-quality films.…”

Section: Introductionmentioning

confidence: 99%

Gold‐Particle‐Enhanced Crystallite Growth of Thin Films of Barium Titanate Prepared by the Sol‐Gel Process

Masaki¹,

Koutzarov²,

Ruda³

et al. 1998

Journal of the American Ceramic Society

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“…The effective dielectric constant of the films showed a characteristic dispersion with frequency (Figure ) and was equal to 20−25 at 10 kHz, consistent with the values reported previously. ,,, Sawyer−Tower polarization measurements showed paraelectric behavior, as might be expected in view of the structural data, and large leakage currents were observed. Similar behavior for amorphous and polycrystalline BaTiO 3 films led the authors to conclude the amorphous grain-boundary layer had a low dielectric constant and high dielectric losses. Films annealed at 1000 °C had the tetragonal structure suitable for ferroelectric behavior.…”

Section: Resultsmentioning

confidence: 75%

Properties of Dielectric BaTiO₃ Thin Films Prepared by Spray Pyrolysis

1998

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Thin-film BaTiO 3 has been prepared for the first time by spray pyrolysis. Both smooth and highly porous films were deposited depending on deposition temperature and rate. Asdeposited films contained an unidentified, low-symmetry barium titanate modification. Annealing at 500-900 °C converted the films to the cubic phase, while annealing at 1000 °C produced the tetragonal phase and an increase in the grain size. As-deposited and annealed films were highly dielectric with DC resistivity in the 10 10 -10 12 Ω‚cm range. AC resistivity decreased with frequency following a power-law dependence with an exponent of -0.6 to -0.7. Both resistivity and capacitance remained stable at temperatures to 400 °C. The effective dielectric constant (20-25 at 10 kHz) was possibly determined by amorphous grain-boundary region with high density of traps.

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“…The leakage currents for all samples were less than ∼10 −6 A over the electric field range of ± 500 kV cm −2 . The observed phenomena indicate that despite being produced at room temperature, the LbL‐assembled (PAA/13‐nm OA‐BTO NP ) n multilayers can exhibit better insulating properties than conventional polycrystalline BTO (>100 nm) and thermally annealed BTO thin films . However, the (poly(ethylene imine) (PEI)/13‐nm OA‐BTO NP ) n multilayers generated significant leakage currents due to the hydrophilicity of PEI, despite the application of an identical electric field (see Figure S4 in the Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

Layer‐by‐Layer Controlled Perovskite Nanocomposite Thin Films for Piezoelectric Nanogenerators

Kim

Lee

Hwang

et al. 2014

Adv Funct Materials

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wileyonlinelibrary.comenergy, [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] as well as to other technical applications, such as batteries, sensors, magnetoelectric devices. [19][20][21] Recently, the successful preparation of piezoelectric nanogenerators (NGs), which can harvest mechanical energy from our surrounding living environments, was demonstrated using piezoelectric PFO materials such as BaTiO 3 (BTO), [2][3][4][5] ZnSnO 3 , [6][7][8] (K, Na) NbO 3 , [ 9,10 ] PMN-PT, [ 11,12 ] and Pb(Zr,Ti) O 3 (PZT). [13][14][15][16][17] The results offer significant potential for various technological applications, such as remote/wireless data transmission, battery charging, and the powering of electronic devices.BTO has been regarded as one of the most technologically promising PFO materials for use in piezoelectric NGs because of its strong piezoelectric properties and the environmental advantages that it offers over lead-based PFO ceramics such as PZT. However, little experimental consensus exists on the critical size at which the size-dependent ferroelectricity of the BTO nanoparticles (BTO NPs ) is suppressed, whereby the critical size of the BTO NPs is generally recognized to be approximately 10-20 nm. [ 22 ] Most studies of BTO-based devices have focused on the use of large BTO NPs (>100 nm), [ 4 ] BTO nanotubes (approximately 5 µm in length or longer) [ 23 ] or vacuumdeposited BTO layers with high-temperature annealing. [ 3 ] Further, although a nanocomposite thin fi lm has been regarded as a very attractive structure for large-scale fl exible piezoelectric NGs due to its facile size scalability, cost-effectiveness, and mechanical robustness, [ 8 ] a high degree of control over the fi lm/ layer dimensions and a uniform internal structure without the requirement of binders or additives to prevent NP segregation or agglomeration are still very challenging for the realization of high-performance nanocomposite thin fi lm-based piezoelectric NGs.With respect to the fabrication of nanocomposite fi lms, the layer-by-layer (LbL) assembly method has demonstrated the highest potential and versatility for the preparation of nanocomposite fi lms with tailored thicknesses, compositions, and functionalities achieved through complementary interactions. [24][25][26][27][28][29][30][31][32][33][34] LbL assemblies can also be effectively applied to various substrates, irrespective of their size or shape. However, the traditional LbL assembly of electrostatically charged inorganic NPs in aqueous solvents relies on electrostatic properties of NP surface, hence the direct application of this approach for Perovskite nanoparticle-based nanocomposite thin fi lms strictly tailored using unconventional layer-by-layer (LbL) assembly in organic media for piezoelectric nanogenerators (NGs) are demonstrated. By employing sub-20-nm BaTiO 3 nanoparticles stabilized by oleic acid ligands (i.e., OA-BTO NPs ) and carboxylic acid (COOH)-functionalized polymers, such as poly(acrylic acid) (PAA), the resulting OA-BTO NP /PAA nanoco...

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Effects of a new stacking method on characteristics of multilayered BaTiO3 thin film

Cited by 26 publications

References 15 publications

Gold‐Particle‐Enhanced Crystallite Growth of Thin Films of Barium Titanate Prepared by the Sol‐Gel Process

Gold‐Particle‐Enhanced Crystallite Growth of Thin Films of Barium Titanate Prepared by the Sol‐Gel Process

Properties of Dielectric BaTiO₃ Thin Films Prepared by Spray Pyrolysis

Layer‐by‐Layer Controlled Perovskite Nanocomposite Thin Films for Piezoelectric Nanogenerators

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Effects of a new stacking method on characteristics of multilayered BaTiO3 thin film

Cited by 26 publications

References 15 publications

Gold‐Particle‐Enhanced Crystallite Growth of Thin Films of Barium Titanate Prepared by the Sol‐Gel Process

Gold‐Particle‐Enhanced Crystallite Growth of Thin Films of Barium Titanate Prepared by the Sol‐Gel Process

Properties of Dielectric BaTiO3 Thin Films Prepared by Spray Pyrolysis

Layer‐by‐Layer Controlled Perovskite Nanocomposite Thin Films for Piezoelectric Nanogenerators

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Properties of Dielectric BaTiO₃ Thin Films Prepared by Spray Pyrolysis