Pressure-induced phase transitions of perovskite ferroelectric crystals: comparison of hydrostatic and 1D compression pressure

Gao, Junjie; Xie, Lu-You; Zhang, Hao; Yu, Jian; Wang, Ganghua; Liu, Gaomin; Gu, Yanqin; He, Hongliang; Bai, Jingsong

doi:10.1088/0022-3727/48/46/465302

Cited by 3 publications

(3 citation statements)

References 29 publications

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“…Here, we chose two different phase structures of PMN–PT ferroelectric single crystals: the rhombohedral (PMN‐0.29PT) and tetragonal phase (PMN‐0.36PT). The single crystals were grown by the improved Bridgeman growth method and provided by Xi'an Jiaotong University of China 25 . The crystallographic orientation of the sample is [0 0 1].…”

Section: Methodsmentioning

confidence: 99%

“…In addition to the electro‐induced phase transition, the mechanical controls of the phase transition and polarization switching of ferroelectric materials have attracted the attention of many scholars 15–24 . They are mostly studied under hydrostatic pressure and uniaxial compression 16–20,25–28 . Under the action of hydrostatic pressure, relaxor ferroelectric single crystal is more prone to ferroelectric–paraelectric phase transition, 25–27 uniaxial pressure in different directions will lead to phase transition between ferroelectric phases 16–20 .…”

Section: Introductionmentioning

confidence: 99%

“…They are mostly studied under hydrostatic pressure and uniaxial compression 16–20,25–28 . Under the action of hydrostatic pressure, relaxor ferroelectric single crystal is more prone to ferroelectric–paraelectric phase transition, 25–27 uniaxial pressure in different directions will lead to phase transition between ferroelectric phases 16–20 . However, most of these studies focus on the effect of pressure on material properties and do not give a substantial evidence of the path of the stress‐induced phase transition.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Mechanically induced rhombohedral to tetragonal phase transition in PMN–PT single crystals by nanoindentation

2022

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Understanding the phase transition behavior of the rhombohedral phase (R) and tetragonal phase (T) of the relaxor ferroelectric PMN–PT single crystals under mechanical load is essential for the potential voltage‐free controlled ferroelectric‐based nanodevices. Relaxor ferroelectric single crystals PMN–PT, under a local inhomogeneous mechanical load, were studied experimentally by the nanoindentation tests and Raman spectroscopy measurements. The observations show that the rhombohedral phase can be transformed successfully to the tetragonal phase under a mechanical stress, and the tetragonal phase in the PMN–PT single crystals presents a structural stability. The phase transition induced by the mechanical stress with different strain rates further indicates that the relaxor ferroelectric single crystals possess a potential mechanical controllability. The present study reveals the phase transition pathway of the relaxor ferroelectric single crystal under inhomogeneous stress and provides the exciting possibility of the control of mechanically induced phase transition for ferroelectrics.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mechanically induced rhombohedral to tetragonal phase transition in PMN–PT single crystals by nanoindentation

2022

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Pressure-induced room temperature electrocaloric effect in BiFeO3-PbTiO3 solid solution based on Landau-Devonshire theory

Wang

Shi

Gao

et al. 2022

Materials Today Communications

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Oxygen vacancy-induced ferromagnetism in Bi4NdTi3FeO15 multiferroic ceramics

Zhang

Feng

Huang

et al. 2016

Journal of Applied Physics

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Layered Aurivillius compounds with multiferroic properties have attracted much attention due to their rich fundamental physics and great application potential. However, the ferroelectric and magnetic properties are different for these compounds with different synthesis conditions. In this paper, we investigate the structure, ferroelectricity, and magnetism of four-layer Aurivillius-phase multiferroic Bi4NdTi3FeO15. The four-layer structure is confirmed by powder X-ray diffraction and high-angle annular dark field scanning transmission electron microscopy. The ferroelectricity together with dielectric constant can be reduced by vacuum-annealing treatment due to the increase of oxygen vacancy concentration. More interestingly, the ferromagnetism is strongly enhanced by vacuum-annealing and can be obviously suppressed after re-oxidization, which may be associated with Fe3+-O-Fe2+ coupling originated from the variable valence state of Fe with different oxidization conditions. These findings indicate that oxygen vacancies play a crucial role in the ferroelectric and magnetic properties in Aurivillius compounds synthesized by different conditions.

show abstract

Pressure-induced phase transitions of perovskite ferroelectric crystals: comparison of hydrostatic and 1D compression pressure

Cited by 3 publications

References 29 publications

Mechanically induced rhombohedral to tetragonal phase transition in PMN–PT single crystals by nanoindentation

Mechanically induced rhombohedral to tetragonal phase transition in PMN–PT single crystals by nanoindentation

Pressure-induced room temperature electrocaloric effect in BiFeO3-PbTiO3 solid solution based on Landau-Devonshire theory

Oxygen vacancy-induced ferromagnetism in Bi4NdTi3FeO15 multiferroic ceramics

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