Photoacoustic and X-ray photoelectron spectroscopic studies in reduced lead zirconate titanate ceramics

Rajopadhye, N.R.; Bhoraskar, S. V.; Badrinarayan, S.; Sinha, Amitabha

doi:10.1007/bf01111925

Cited by 19 publications

(10 citation statements)

References 8 publications

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“…1 It is well known that hydrogen generated during forming gas annealing or in electroplating process may cause severe degradation in resistivity and ferroelectricity. [2][3][4][5][6][7][8][9][10] Up to now, however, there is no report about the effect of hydrogen on phase transition of ferroelectric ceramics. After forming gas annealing above its Curie temperature the polarization-voltage hysteresis loop of PZT film disappeared gradually.…”

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confidence: 99%

Experiment and first principles investigation on the hydrogen-hindered phase transition of ferroelectric ceramics

Huang

Chu

et al. 2006

Applied Physics Letters

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In this letter, hydrogen-hindered phase transition of ferroelectric ceramics from cubic to tetragonal has been studied by experiment and first principles calculation. The calculation shows that for hydrogenated tetragonal PbTiO 3 , double-lowest-energy sites of Ti along the c axis exist no longer and the only lowest energy site locates at the center of the cell. The calculation can explain the experiment that hydrogen charged above its Curie temperature can hinder phase transition of lead zirconate titanate from cubic paraelectricity to tetragonal ferroelectricity.

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confidence: 99%

Experiment and first principles investigation on the hydrogen-hindered phase transition of ferroelectric ceramics

Huang

Chu

et al. 2006

Applied Physics Letters

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“…The diffusion distance of oxygen is 2 μm at 600°C for 10 min based on the D value in . Therefore, metallic lead can be generated on the surface layer after charging at a high temperature, which has been proved by X‐ray photoemission spectroscopy 8 …”

Section: Discussionmentioning

confidence: 94%

“…Rajopadhye et al 8 indicated that the depth of the hydrogeninduced semiconductor layer, based on a change in color, is about 10-15 mm after changing in H 2 at 6001C for 10 min. They proposed that a part of PbO is reduced to Pb, i.e.,…”

Section: Discussionmentioning

confidence: 99%

“…[2][3][4][5][6] Evans et al 7 indicated that the electric property of the integrate lead zirconate titanate (PZT) capacitors degraded and leakage currents increased after annealing in H 2 at low pressure, and failure of the inter-layer dielectric or top electrode adhesion occurred in H 2 at high pressure. Rajopadhye et al 8 showed that after charging in H 2 at 6001C for 10 min, the color of the surface layer of 10-20 mm for PZT ferroelectric ceramics changed from yellow to black, and the resistivity decreased from 10 12 -10 13 to 10 6 -10 7 O Á cm, i.e., hydrogen caused the PZT ferroelectric ceramics to transform from an insulator into a semiconductor. The reason could be that one part of Pb 21 on the surface layer had been reduced to metallic lead (Pb 0 ).…”

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confidence: 99%

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Hydrogen‐Induced Semiconductor Transformation of Lead Zirconate Titanate Ferroelectric Ceramics

Huang

Wuyang

et al. 2007

Journal of the American Ceramic Society

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Semiconductor transformation of lead zirconate titanate (PZT)‐5H ferroelectric ceramics induced by hydrogen has been investigated. The results showed that hydrogen caused the PZT‐5H ferroelectric ceramics to transform from a yellow insulator into a black n‐type semiconductor, and the leakage current and carrier concentration increased but the resistivity decreased with increasing hydrogen concentration. During charging in H2 at a temperature higher than the Curie point, hydrogen would restrain the PZT‐5H ferroelectric ceramics to transform from cubic into tetragonal phase, resulting in the disappearance of ferroelectricity at room temperature. Charging at a temperature below the Curie point, however, did not change the crystal structure of the tetragonal ferroelectric ceramics. The properties and color of PZT‐5H ferroelectric ceramics were restored after outgassing at a high temperature.

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“…[1][2][3][4][5][6][7][8][9][10][11] Moreover, hydrogen also affects the mechanical properties of ferroelectric ceramics. Hydrogen fissures initiate and grow along grain boundaries in PZT ceramics during hydrogen charging in a solution under load-free conditions once the hydrogen concentration in the sample exceeds a critical value.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Hydrogen on the Fracture Properties of 0.8(Na1/2Bi1/2)TiO3-0.2(K1/2Bi1/2)TiO3 Ferroelectric Ceramics

Zhang

et al. 2007

Journal of Elec Materi

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The effect of hydrogen on the fracture properties of lead-free ferroelectric ceramics has been studied. For hydrogen precharged samples, the fracture toughness decreased linearly with both increasing hydrogen concentration and the logarithm of dwell time of indenting. Hydrogen-induced delayed propagation of unloaded indentation cracks can occur, and the threshold stress intensity factor of hydrogen-induced cracking induced by residual stress decreases linearly with increasing hydrogen concentration.

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Photoacoustic and X-ray photoelectron spectroscopic studies in reduced lead zirconate titanate ceramics

Cited by 19 publications

References 8 publications

Experiment and first principles investigation on the hydrogen-hindered phase transition of ferroelectric ceramics

Experiment and first principles investigation on the hydrogen-hindered phase transition of ferroelectric ceramics

Hydrogen‐Induced Semiconductor Transformation of Lead Zirconate Titanate Ferroelectric Ceramics

The Effect of Hydrogen on the Fracture Properties of 0.8(Na1/2Bi1/2)TiO3-0.2(K1/2Bi1/2)TiO3 Ferroelectric Ceramics

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