Abstract
Monodisperse lead zirconate titanat̀e (PZT) nanoparticles with diameters of 9 nm were produced by laser ablation followed by a gas-phase thermal treatment in combination with a size-classification technique using a very low-pressure differential mobility analyzer. The particles prior to the thermal treatment are amorphous. When the laser power density for ablation increases from 0.5GW/cm2 to 12GW/cm2, the production yield of the particles increases regardless of the laser photon energy. When the laser photon energy is 3.5 eV, the nanoparticles generated with laser power densities as high as 7 GW/cm2 are crystallized to perovskite by thermal treatment at 900°C, while those generated with even, higher power densities become pyrochlore. In contrast, when the laser photon energy is 2.3 eV, perovskite nanoparticles are obtained only at a power density of 0.5 GW/cm2. These results reveal that the crystalline structure of PZT nanoparticles can be adjusted to perovskite or pyrochlore by changing thermal treatment temperature, laser power density, and photon energy. Furthermore, X-ray photoelectron spectroscopy indicates that the crystallization to pyrochlore is caused by lead deficiency.
| Original language | English |
|---|---|
| Pages (from-to) | 4419-4423 |
| Number of pages | 5 |
| Journal | Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers |
| Volume | 43 |
| Issue number | 7 A |
| DOIs | |
| Publication status | Published - 2004 Jul |
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Keywords
- Crystalline structure
- Ferroelectrics
- Laser ablation
- Nanoparticles
- Pb(Zr,Ti)O
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
Cite this
Crystallization of monodisperse lead zirconate titanate nanoparticles produced by laser ablation. / Katagiri, Takahiro; Seol, Kwang Soo; Takeuchi, Kazuo; Ohki, Yoshimichi.
In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 43, No. 7 A, 07.2004, p. 4419-4423.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Crystallization of monodisperse lead zirconate titanate nanoparticles produced by laser ablation
AU - Katagiri, Takahiro
AU - Seol, Kwang Soo
AU - Takeuchi, Kazuo
AU - Ohki, Yoshimichi
PY - 2004/7
Y1 - 2004/7
N2 - Monodisperse lead zirconate titanat̀e (PZT) nanoparticles with diameters of 9 nm were produced by laser ablation followed by a gas-phase thermal treatment in combination with a size-classification technique using a very low-pressure differential mobility analyzer. The particles prior to the thermal treatment are amorphous. When the laser power density for ablation increases from 0.5GW/cm2 to 12GW/cm2, the production yield of the particles increases regardless of the laser photon energy. When the laser photon energy is 3.5 eV, the nanoparticles generated with laser power densities as high as 7 GW/cm2 are crystallized to perovskite by thermal treatment at 900°C, while those generated with even, higher power densities become pyrochlore. In contrast, when the laser photon energy is 2.3 eV, perovskite nanoparticles are obtained only at a power density of 0.5 GW/cm2. These results reveal that the crystalline structure of PZT nanoparticles can be adjusted to perovskite or pyrochlore by changing thermal treatment temperature, laser power density, and photon energy. Furthermore, X-ray photoelectron spectroscopy indicates that the crystallization to pyrochlore is caused by lead deficiency.
AB - Monodisperse lead zirconate titanat̀e (PZT) nanoparticles with diameters of 9 nm were produced by laser ablation followed by a gas-phase thermal treatment in combination with a size-classification technique using a very low-pressure differential mobility analyzer. The particles prior to the thermal treatment are amorphous. When the laser power density for ablation increases from 0.5GW/cm2 to 12GW/cm2, the production yield of the particles increases regardless of the laser photon energy. When the laser photon energy is 3.5 eV, the nanoparticles generated with laser power densities as high as 7 GW/cm2 are crystallized to perovskite by thermal treatment at 900°C, while those generated with even, higher power densities become pyrochlore. In contrast, when the laser photon energy is 2.3 eV, perovskite nanoparticles are obtained only at a power density of 0.5 GW/cm2. These results reveal that the crystalline structure of PZT nanoparticles can be adjusted to perovskite or pyrochlore by changing thermal treatment temperature, laser power density, and photon energy. Furthermore, X-ray photoelectron spectroscopy indicates that the crystallization to pyrochlore is caused by lead deficiency.
KW - Crystalline structure
KW - Ferroelectrics
KW - Laser ablation
KW - Nanoparticles
KW - Pb(Zr,Ti)O
UR - http://www.scopus.com/inward/record.url?scp=4644220151&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=4644220151&partnerID=8YFLogxK
U2 - 10.1143/JJAP.43.4419
DO - 10.1143/JJAP.43.4419
M3 - Article
VL - 43
SP - 4419
EP - 4423
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - 7 A
ER -