Concept

Barium titanate

Related publications (395)

Prediction of a low-temperature ferroelectric instability in antiphase domain boundaries of strontium titanate

The structure of the antiphase domain boundaries of strontium titanate SrTiO3 that exist at temperatures below the antiferrodistortive transition, is analyzed. It is found that some boundaries are similar to Neel domain walls, as an additional component of ...

2001

Extrinsic contributions to the piezoelectric response of lead-based ferroelectrics

The present study aims at a better understanding of the high piezoelectric properties encountered in lead-based ferroelectrics by focusing on the extrinsic contributions to the response. The main characteristics of these materials are the highly nonlinear ...

EPFL2001

Micromachined infrared detectors based on pyroelectric thin films

Paul Muralt

The state of the art of thin-film pyroelectric infrared (IR) detectors is reviewed covering device physics, material performance, micro-fabrication and device examples. Emphasis is given to special issues related to thin films, such as small heat capacitie ...

2001

Constant-current study of dielectric breakdown of Pb(Zr,Ti)O-3 ferroelectric film capacitors

Nava Setter, Alexander Tagantsev, Igor Stolichnov, Serguei Okhonin

This paper addresses the problem of time-dependent dielectric breakdown of Pb(Zr,Ti)O-3 (PZT) thin films. It is shown by using constant-current breakdown measurements, that for PZT film capacitors with Pt and SrRuO3 (SRO) electrodes the breakdown onset is ...

2001

Polarization fatigue in ferroelectric films: Basic experimental findings, phenomenological scenarios, and microscopic features

Nava Setter, Alexander Tagantsev, Igor Stolichnov, Enrico Colla

The reduction in switchable polarization of ferroelectric thin films due to electrical stress (polarization fatigue) is a major problem in ferroelectric nonvolatile memories. There is a large body of available experimental data and a number of existing mod ...

2001

Size and top electrode-edge effects on fatigue in Pb(Zr,Ti)O-3 capacitors with Pt-electrodes

Nava Setter, Alexander Tagantsev, Enrico Colla

The occurrence of switching-induced suppression of the remanent polarization (fatigue) in Pb(Zr,Ti)O-3 (PZT) ferroelectric capacitors with comb shaped top electrodes was studied by means of scanning force microscopy assisted by a lock-in amplifier. Fatigue ...

2001

Ferroelectric and piezoelectric properties of Nb doped PZT films

Paul Muralt, Stéphane Hiboux

Pb(Zr,Ti)O-3 (PZT) and Pb(Zr,Ti,Nb)O-3 (PNZT) thin films were grown on platinized silicon substrates by r.f. magnetron sputtering followed by a post-annealing treatment. The Niobium, Nb, concentration varied from 1 to 7 at.% by increment of 1 at.%. The eff ...

2001

Piezoelectric hysteresis analysis and loss separation

Nava Setter, Dragan Damjanovic

Losses in piezoelectrics are approached by considering a description of direct stress-charge displacement hysteresis. Shortcomings of the usual loss models (viscous and Rayleigh, taken separately) are briefly demonstrated. Then, a mixed model for piezoelec ...

2001

Processing and properties of screen-printed lead zirconate titanate piezoelectric thick films on electroded silicon

Nava Setter, Dragan Damjanovic

The printing of lead zirconate titanate (PZT, Pb(Zr,Ti)O-3) piezoelectric thick films on silicon substrates is being studied for potential use as microactuators, microsensors, and micro.. transducers. A fundamental challenge in the fabrication of useful PZ ...

2001

Piezoelectric properties of perovskite ferroelectrics: Unsolved problems and future research

Dragan Damjanovic

This article reviews recent advances in the studies of the piezoelectric properties of perovskite materials. Perovskite compositions are the best known and the largest family of ferroelectric and piezoelectric materials.: The dependence of the longitudinal ...

2001

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