Temperature dependent fatigue rates in thin-film ferroelectric capacitors

Brennan, Ciaran J.; Parrella, R.; Larsen, Duane E.

doi:10.1080/00150199408244720

Cited by 28 publications

(15 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The answer to this question was given in two very insightful experiments on the temperature dependence of fatigue. [58,89] High temperatures yield reduced fatigue rates, due to the lower spontaneous polarisation and thus lower field incompatibilities. At room temperature the strongest fatigue effect was observed.…”

Section: Reviewsmentioning

confidence: 99%

Fatigue In Bulk Lead Zirconate Titanate Actuator Materials

2005

View full text Add to dashboard Cite

Fatigue in ferroelectric ceramics is the gradual change of material properties with cyclic loading. It is caused by microscopic material modifications of mechanical or electrical origin. Due to the electromechanical coupling, both mechanisms can yield similar or even identical changes in properties. Macroscopically, a reduction of switchable polarization is anticipated and asymmetries in the macroscopic hysteresis curves arise due to charge carrier migration. This review elaborates on the multiple loading scenarios that lead to asymmetries in material response and loss in performance. The disparities between unipolar, bipolar, and mixed electromechanical loading are displayed. Possible microscopic origins are categorized. The strong similarities in the roles of microcracks, dielectric layers, and grain boundaries are worked out.

show abstract

Section: Reviewsmentioning

confidence: 99%

Fatigue In Bulk Lead Zirconate Titanate Actuator Materials

2005

View full text Add to dashboard Cite

show abstract

“…10 Measurements of the temperature dependence of fatigue rates have provided further support to this model for fatigue. 11 In fact, there is a considerable amount of indirect evidence which suggests that oxygen vacancies play a role in ferroelectric fatigue. The observations reported here provide strong direct evidence that this is the case.…”

mentioning

confidence: 99%

Ferroelectric fatigue of Pb(Zr,Ti)O3 thin films measured in atmospheres of varying oxygen concentration

Brazier

Mansour

McElfresh

1999

Applied Physics Letters

View full text Add to dashboard Cite

Ferroelectric fatigue in Pb(Zr,Ti)O3 films was found to be remarkably sensitive to the oxygen partial pressure of the atmosphere above the film during measurement. Films with Zr/Ti ratios of 55/45 and 75/25 were subjected to ferroelectric fatigue testing at room temperature in atmospheres of various oxygen partial pressure, or pO2. The number of switching cycles at which the onset of fatigue occurred was found to be sharply peaked with respect to the oxygen partial pressure surrounding the sample. Such a striking dependence on the oxygen concentration strongly supports current theories for fatigue that involve oxygen vacancy migration.

show abstract

“…In spite of intensive studies in past decades, the low-temperature performance of ferroelectric thin films has not been understood as well as the room-temperature one. 1,2 Nevertheless, the temperature dependence of ferroelectric properties is one of the interesting issues, in view of not only technological applications, but also in a fundamental sense. 3 In fact, FRAM devices may undergo service at a low-temperature circumstance, such as in space.…”

mentioning

confidence: 99%