Phase transition of Bi5Ti3FeO15ceramics discovered by Raman spectroscopy and in situ synchrotron XRD under stress field

Mengyun Bian; Yan Ye; Anyang Cui; Kai Jiang; Wei Bai; Hongliang Dong; Bin Chen; Zhigao Hu; Junhao Chu

doi:10.1063/5.0019034

Phase transition of Bi₅Ti₃FeO₁₅ceramics discovered by Raman spectroscopy and in situ synchrotron XRD under stress field

Mengyun Bian, Yan Ye, Anyang Cui, Kai Jiang, Wei Bai, Hongliang Dong, Bin Chen, Zhigao Hu, Junhao Chu

School of Physics and Electronic Science

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

Bi5Ti3FeO15 (BTFO) ceramics have been widely studied as a multiferroic material with some potential applications. However, the effect of the stress field on BTFO ceramics with complex lattice structures is unknown. Here, we use pressure-dependent Raman scattering spectroscopy to study the structure/phase transition of BTFO samples. Because the phonon mode changes significantly, there could be a phase transition in the range of 4.5-14.8 GPa. In order to further prove the occurrence of phase transition, we carried out in situ high-pressure angular dispersion x-ray diffraction (XRD), which clearly proved the structural evolution of BTFO: orthorhombic crystal A21am transformed into tetragonal I4/mmm. Note that the results from the XRD experiment are self-consistent with the data derived from Raman spectroscopy. It provides an effective method to explore the phase transition of complex oxide structures under high pressure.

Original language	English
Article number	0019034
Journal	Applied Physics Letters
Volume	117
Issue number	2
DOIs	https://doi.org/10.1063/5.0019034
State	Published - 13 Jul 2020

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10.1063/5.0019034

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title = "Phase transition of Bi5Ti3FeO15ceramics discovered by Raman spectroscopy and in situ synchrotron XRD under stress field",

abstract = "Bi5Ti3FeO15 (BTFO) ceramics have been widely studied as a multiferroic material with some potential applications. However, the effect of the stress field on BTFO ceramics with complex lattice structures is unknown. Here, we use pressure-dependent Raman scattering spectroscopy to study the structure/phase transition of BTFO samples. Because the phonon mode changes significantly, there could be a phase transition in the range of 4.5-14.8 GPa. In order to further prove the occurrence of phase transition, we carried out in situ high-pressure angular dispersion x-ray diffraction (XRD), which clearly proved the structural evolution of BTFO: orthorhombic crystal A21am transformed into tetragonal I4/mmm. Note that the results from the XRD experiment are self-consistent with the data derived from Raman spectroscopy. It provides an effective method to explore the phase transition of complex oxide structures under high pressure.",

author = "Mengyun Bian and Yan Ye and Anyang Cui and Kai Jiang and Wei Bai and Hongliang Dong and Bin Chen and Zhigao Hu and Junhao Chu",

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T1 - Phase transition of Bi5Ti3FeO15ceramics discovered by Raman spectroscopy and in situ synchrotron XRD under stress field

AU - Bian, Mengyun

AU - Ye, Yan

AU - Cui, Anyang

AU - Jiang, Kai

AU - Bai, Wei

AU - Dong, Hongliang

AU - Chen, Bin

AU - Hu, Zhigao

AU - Chu, Junhao

PY - 2020/7/13

Y1 - 2020/7/13

N2 - Bi5Ti3FeO15 (BTFO) ceramics have been widely studied as a multiferroic material with some potential applications. However, the effect of the stress field on BTFO ceramics with complex lattice structures is unknown. Here, we use pressure-dependent Raman scattering spectroscopy to study the structure/phase transition of BTFO samples. Because the phonon mode changes significantly, there could be a phase transition in the range of 4.5-14.8 GPa. In order to further prove the occurrence of phase transition, we carried out in situ high-pressure angular dispersion x-ray diffraction (XRD), which clearly proved the structural evolution of BTFO: orthorhombic crystal A21am transformed into tetragonal I4/mmm. Note that the results from the XRD experiment are self-consistent with the data derived from Raman spectroscopy. It provides an effective method to explore the phase transition of complex oxide structures under high pressure.

AB - Bi5Ti3FeO15 (BTFO) ceramics have been widely studied as a multiferroic material with some potential applications. However, the effect of the stress field on BTFO ceramics with complex lattice structures is unknown. Here, we use pressure-dependent Raman scattering spectroscopy to study the structure/phase transition of BTFO samples. Because the phonon mode changes significantly, there could be a phase transition in the range of 4.5-14.8 GPa. In order to further prove the occurrence of phase transition, we carried out in situ high-pressure angular dispersion x-ray diffraction (XRD), which clearly proved the structural evolution of BTFO: orthorhombic crystal A21am transformed into tetragonal I4/mmm. Note that the results from the XRD experiment are self-consistent with the data derived from Raman spectroscopy. It provides an effective method to explore the phase transition of complex oxide structures under high pressure.

UR - https://www.scopus.com/pages/publications/85088441373

U2 - 10.1063/5.0019034

DO - 10.1063/5.0019034

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SN - 0003-6951

VL - 117

JO - Applied Physics Letters

JF - Applied Physics Letters

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ER -

Phase transition of Bi₅Ti₃FeO₁₅ceramics discovered by Raman spectroscopy and in situ synchrotron XRD under stress field

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