Identification of elastic-plastic and phase transition characteristics for relaxor ferroelectric PMN-PT anisotropic single crystals using nanoindentation technique

Jiang, Yixuan; Man, Guian; Wang, Xingzhe; He, Hongliang

doi:10.1080/14786435.2018.1495850

Cited by 5 publications

(4 citation statements)

References 29 publications

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“…The test instrument used in the experiment is the Nano Indenter G200 produced by Keysight. Details about the materials and the test instrument can be found in author's previous literatures 31,32 . As a sharp indenter can generate larger stress locally to make the material more prone to phase transition, 37 a Berkovich triangular pyramid indenter was used to test the material.…”

Section: Methodsmentioning

confidence: 99%

“…Details about the materials and the test instrument can be found in author's previous literatures. 31,32 As a sharp indenter can generate larger stress locally to make the material more prone to phase transition, 37 a Berkovich triangular pyramid indenter was used to test the material. In order to explore the different phase transition characteristics of R and T phase, the load-displacement curves under different strain rates at a peak depth of 50 nm were given by the peak displacementcontrolled quasi-static method.…”

Section: Methodsmentioning

confidence: 99%

“…Nanoindentation can locally generate enough stress to drive the local phase transition of the material and leave residual indentation when an indenter with a sharp tip penetrates into the sample 31,32 . The microscopic observation of residual indentation by Raman spectroscopy, transmission electron microscopy, scanning electron microscopy and so forth can directly observe the phase transition behavior of the material with the change of stress 33 .…”

Section: Introductionmentioning

confidence: 99%

“…29,30 Nanoindentation can locally generate enough stress to drive the local phase transition of the material and leave residual indentation when an indenter with a sharp tip penetrates into the sample. 31,32 The microscopic observation of residual indentation by Raman spectroscopy, transmission electron microscopy, scanning electron microscopy and so forth can directly observe the phase transition behavior of the material with the change of stress. 33 In recent years, some studies have explored the phase transition, polarization switching and controllably writing by mechanical force for ferroelectric materials through the local probe scanning by an atomic force microscope and nanoindentation.…”

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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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%