Relaxor ferroelectric PMN-32%PT crystals under stress, electric field and temperature loading: II-33-mode measurements

McLaughlin, Elizabeth A.; Liu, Tieqi; Lynch, Christopher S.

doi:10.1016/j.actamat.2005.05.002

Cited by 87 publications

(65 citation statements)

References 22 publications

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“…Again, there are possibilities that phase transitions take place and make contributions to the observed changes. The compressive pre-stress could transform the rhombohedral phase to either an orthorhombic [23] or a tetragonal [24] We now analyze the situation in Crystal T. Compared to Crystal R, the difference is that ferroelastic domain switching takes place and phase transition is not likely to occur. Under radial pre-stresses, polar vectors will be aligned along the electric field direction through 90° ferroelastic domain switching.…”

Section: Discussionmentioning

confidence: 99%

“…[23][24][25] Under combined radial compressive stresses and electric fields, it is possible that Crystal R transforms toward a tetragonal phase through an intermediate monoclinic phase. The rotation of polar axis during this process explains the initial increase in Pr seen in Figure 3 again matches very well with those in previous literature.…”

Section: Discussionmentioning

confidence: 99%

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Mechanical Confinement: An Effective Way of Tuning Properties of Piezoelectric Crystals

Marsilius

Frederick

et al. 2011

Adv Funct Materials

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Using <001>-oriented Pb(Mg 1/3 Nb 2/3 )O 3 -PbTiO 3 ferroelectric single crystals as a model material, the impact of mechanical confinements on polarization hysteresis, coercive field, and remanent polarization of relaxor-based piezocrystals is investigated. Comparative studies are made among rhombohedral and tetragonal single crystals, as well as a polycrystalline ceramic, under uniaxial and radial compressive prestresses. The dramatic changes observed are interpreted in terms of the piezoelectric effect and possible phase transitions for rhombohedral crystals, and ferroelastic domain switching and the piezoelectric effect for tetragonal crystals. Under radial compressive stresses, the coercive field for the rhombohedral crystal is observed to increase to 0.67 kV/mm and that for the tetragonal crystal is increased to 0.78 kV/mm. This is a 200% increase relative to the unstressed condition. The results demonstrate a general and effective approach to overcome the drawback of low coercive fields in these relaxor-based ferroelectric crystals, which could help facilitate widespread implementation of these piezocrystals in engineering devices. KeywordsPiezoelectric single crystals, compressive pre-stresses, domain switching, coercive field, remanent polarization

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Mechanical Confinement: An Effective Way of Tuning Properties of Piezoelectric Crystals

Marsilius

Frederick

et al. 2011

Adv Funct Materials

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“…However, the first generation crystals cannot be used over a large range of stress, electric field, and temperature [67][68][69][70]. Thus, PIN-PMN-PT, the second generation crystal, was considered as a sensing material.…”

Section: Pin-pmn-pt For Shear Mode Accelerometer Applicationmentioning

confidence: 99%

Relaxor-PT Single Crystal Piezoelectric Sensors

Jiang

Kim

2014

Crystals

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Relaxor-PbTiO 3 piezoelectric single crystals have been widely used in a broad range of electromechanical devices, including piezoelectric sensors, actuators, and transducers. This paper reviews the unique properties of these single crystals for piezoelectric sensors. Design, fabrication and characterization of various relaxor-PT single crystal piezoelectric sensors and their applications are presented and compared with their piezoelectric ceramic counterparts. Newly applicable fields and future trends of relaxor-PT sensors are also suggested in this review paper.

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“…However in PMN-PT crystals, the effect was more diffuse and continuous [13]. Later this elastic nonlinearity was also reported in different crystals and was shown to be a strong function of temperature and geometry of the crystals [16][17][18]. Recently, we demonstrated a large and reversible strain up to 0.5% at field of $0.1 MV m À1 in domain-engineered relaxor-FE PIN-PMN-PT single crystals [16].…”

mentioning

confidence: 92%

Phase switching at low field and large sustainable strain output in domain engineered ferroic crystals

Finkel

Amin

Lofland

et al. 2012

Physica Status Solidi (a)

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Fundamental shortcomings of ferroelectrics (FEs) are low induced strain and high electric field often required for practical application in actuation, sensors, and acoustics. Although domain engineered FE single crystals deliver an order of magnitude improvement, fatigue remains another drawback in achieving reliable multiple domain switching crucial for memory storage. We demonstrate that under specially compressive stresses FE relaxors exhibit low field induced reversible and sustainable strain associated with FE-FE phase switching and unusual and unexpected lack of fatigue after several millions cycles is believed due to strain accommodation occurring in ferroics. Polarized light microscopy and X-ray diffraction are in a very good agreement with macroscopic observation and phenomenological model confirming proposed transformational path. The phenomena presented in this work are envisioned to be universal in domain engineered ferroics enabling mechanical stress to be used for strain and polarization control of electromechanical energy conversion.

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Relaxor ferroelectric PMN-32%PT crystals under stress, electric field and temperature loading: II-33-mode measurements

Cited by 87 publications

References 22 publications

Mechanical Confinement: An Effective Way of Tuning Properties of Piezoelectric Crystals

Mechanical Confinement: An Effective Way of Tuning Properties of Piezoelectric Crystals

Relaxor-PT Single Crystal Piezoelectric Sensors

Phase switching at low field and large sustainable strain output in domain engineered ferroic crystals

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