Dielectric loss anomalies of 0.68PMN–0.32PT single crystal and ceramics at cryogenic temperature

Li, Zhenrong; Wang, Chao; Xi, Zengzhe; Cao, Linhong; Yao, Xi

doi:10.1007/s10832-007-9150-2

Cited by 9 publications

(7 citation statements)

References 13 publications

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“…Studies on PMN-PT suggest that the material composition and poling state 7 influence the size, shape and presence of a low temperature feature. Work on PMN-PT ceramics 14,15 showed broad dielectric loss anomalies that appear more similar to some data on lead zirconate titanate (PZT) based ceramics than relaxor-PbTiO 3 single crystals 16–18 . In PZT ceramics, freezing out of the motion of domain walls is used to explain broad peaks in the dielectric loss spectra 10 .…”

Section: Introductionsupporting

confidence: 71%

Effects of poling and crystallinity on the dielectric properties of Pb(In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3 at cryogenic temperatures

Shepley

Stoica

et al. 2019

Sci Rep

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The mechanisms underlying the anomalously large, room temperature piezoelectric activity of relaxor-PbTiO 3 type single crystals have previously been linked to low temperature relaxations in the piezoelectric and dielectric properties. We investigate the properties of Pb(In 1/2 Nb 1/2 )O 3 -Pb(Mg 1/3 Nb 2/3 )O 3 -PbTiO 3 between 10 and 300 K using dielectric permittivity measurements. We compare results on single crystal plates measured in the [001] and [111] directions with a polycrystalline ceramic of the same composition. Poled crystals have very different behaviour to unpoled crystals, whereas the dielectric spectrum of the polycrystalline ceramic changes very little on poling. A large, frequency dependent dielectric relaxation is seen in the poled [001] crystal around 100 K. The relaxation is much less prominent in the [111] cut crystal, and is not present in the polycrystalline ceramic. The unique presence of the large relaxation in poled, [001] oriented crystals indicates that the phenomenon is not due their relaxor nature alone. We propose that heterophase dynamics such as the motion of phase domain boundaries are responsible for both the anomalous electromechanical and dielectric behaviour.

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Section: Introductionsupporting

confidence: 71%

Effects of poling and crystallinity on the dielectric properties of Pb(In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3 at cryogenic temperatures

Shepley

Stoica

et al. 2019

Sci Rep

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“…Low-temperature motion performance of single-crystal micromotor temperature is not good enough comparing with the data shown in Ref. 11. It is because the slider we used has a larger friction loss comparing to trial slider.…”

Section: Resultsmentioning

confidence: 65%

“…At extremely low temperature, although the d 31 and e T also diminished as temperature decreases, the values of piezoelectric constants of these single crystals are still superior to those of PZT ceramics at room temperature. [10][11][12][13][14] Piezoelectric single crystals have been used in millimeter-size micromotors because of their superhigh piezoelectric effect and power density. [15][16][17][18][19] In order to operate at cryogenic temperature, Dong and Jiang developed Pb(Mg 1/3 Nb 2/3 )-PbTiO 3 single crystal based linear-and rotary-type piezoelectric motors.…”

mentioning

confidence: 99%

Cryogenic motion performances of a piezoelectric single crystal micromotor

Chen

et al. 2014

Journal of Applied Physics

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This study investigates the cryogenic performances of a millimeter-size piezoelectric ultrasonic linear micromotor. The piezoelectric vibrator of the micromotor is made of Pb(In 1/2 Nb 1/2 )O 3 -Pb(Mg 1/3 Nb 2/3 )-PbTiO 3 single crystal and operated in first-bending wobbling mode. Experiments show that the piezoelectric single crystal micromotor works effectively even at extremely low temperature of À175 C, although its resonance peaks vary with temperature significantly. This work confirms the feasibility of cryogenic operation of the piezo-micromotor, which is meaningful for aerospace or superconducting microwave application. V C 2014 AIP Publishing LLC.

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“…Relaxor-based ferroelectric single crystals Pb(Mg 1/3 Nb 2/3 )O 3 -PbTiO 3 (PMN-PT) have an ultrahigh piezoelectric coefficient (d 33 > 2500 pC/N), an electromechanical coupling factor (k 33 > 0.95), and a low dielectric loss compared to traditional piezoelectric ceramics [1][2][3][4][5]. Based on these superior properties, PMN-PT single crystals are usually considered promising materials in sensors, ultrasonic transducers, and motors applications [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Element Segregation and Electrical Properties of PMN-32PT Grown Using the Bridgman Method

Wang

Fang

et al. 2019

Crystals

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A single crystal with nominal composition Pb(Mg 1/3 Nb 2/3 )O 3 -32PbTiO 3 (PMN-32PT) was grown by the Bridgman technique. Crystal orientation was determined using the rotating orientation X-ray diffraction (RO-XRD). Element distribution was measured along different directions using inductively coupled plasma-mass spectrometry (ICP-MS). The effect of the element segregation along axial and radial directions on the electrical properties of the PMN-32PT crystal was investigated. It is indicated that the electrical properties of the samples along the axial direction were strongly dependent on the PT (PbTiO 3 ) content. With the increase of the PT content, the piezoelectric coefficient and remnant polarization were improved. Differently, the electrical properties of the samples along the radial direction were mainly determined by the ratio of the Nb and Mg. The reasons for the element segregation and electrical properties varied with the composition were discussed.Crystals 2019, 9, 98 2 of 10 segregation along the radial direction and the reasons for the Nb and Mg segregation of the PMN-PT single crystals using the Bridgman technique was rarely reported in the literature.In this study, the single crystal with nominal compositional PMN-32PT was grown by the Bridgman technique. The element distribution along the axial and radial directions was confirmed by the inductively coupled plasma-mass spectrometry (ICP-MS). The effect of the element segregation along the axial and radial direction on the electrical properties of the PMN-32PT crystals was investigated. The reasons that the element segregation and electrical properties varied with the composition along the axial direction were also discussed. Experimental ProcedureA PMN-32PT single crystal (Ø25 mm) was grown by the Bridgman method (Figure 1a). The crystal was faint yellow with good transparency. Some stress-induced cracks were presented on the top of the crystal. A sheet with a thickness of 0.8 mm was cut from the as-grown crystal boule along the axial direction (Figure 1b), which showed a poor uniformity in color. The sheet was divided along axial and radial directions with a size of 2 × 2 mm. The specimens were named as test points from Y1 to Y15 along the axial direction and test points from X1 to X4 along the radial direction. The Y9 and X4 test points were the same (shown in Figure 2).

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Dielectric loss anomalies of 0.68PMN–0.32PT single crystal and ceramics at cryogenic temperature

Cited by 9 publications

References 13 publications

Effects of poling and crystallinity on the dielectric properties of Pb(In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3 at cryogenic temperatures

Effects of poling and crystallinity on the dielectric properties of Pb(In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3 at cryogenic temperatures

Cryogenic motion performances of a piezoelectric single crystal micromotor

Element Segregation and Electrical Properties of PMN-32PT Grown Using the Bridgman Method

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