Large spontaneous polarization in polar perovskites of PbTiO3–Bi(Zn1/2Ti1/2)O3
PbTiO3–Bi(Zn1/2Ti1/2)O3 is considered to be a promising high-ferroelectric performance material in the Pb/Bi-based perovskite family. In the present study, a whole set of (1 − x)PbTiO3–xBi(Zn1/2Ti1/2)O3 (0 ≤ x ≤ 1) solid solutions have been prepared by the conventional solid-state and high-pressure...
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Published in | Inorganic chemistry frontiers Vol. 5; no. 6; pp. 1277 - 1281 |
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Main Authors | , , , , , , , , , , , , , |
Format | Journal Article |
Language | English |
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London
Royal Society of Chemistry
01.06.2018
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Abstract | PbTiO3–Bi(Zn1/2Ti1/2)O3 is considered to be a promising high-ferroelectric performance material in the Pb/Bi-based perovskite family. In the present study, a whole set of (1 − x)PbTiO3–xBi(Zn1/2Ti1/2)O3 (0 ≤ x ≤ 1) solid solutions have been prepared by the conventional solid-state and high-pressure vs. high-temperature methods. The effect of Bi(Zn1/2Ti1/2)O3 on the crystal structure has been investigated by synchrotron X-ray powder diffraction. Unlike most PbTiO3-based perovskites, the present system exhibits a continuously enhanced tetragonality (c/a) and large spontaneous polarization (PS) properties. The enhanced c/a is ascribed to the large spontaneous polarization displacements induced by the strong Pb/Bi–O hybridization and coupling interactions between Ti/Zn and Pb/Bi cations, which can be evidenced from the lattice dynamics study and first-principles calculations. Accordingly, the TC (i.e., x = 0.5) is expected to be approximately 1000 °C if its perovskite structure can be stabilized. The present study provides a route to obtain large-PS in PbTiO3-based ferroelectric materials by introducing isostructural perovskites with strong polarity. |
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AbstractList | PbTiO3–Bi(Zn1/2Ti1/2)O3 is considered to be a promising high-ferroelectric performance material in the Pb/Bi-based perovskite family. In the present study, a whole set of (1 − x)PbTiO3–xBi(Zn1/2Ti1/2)O3 (0 ≤ x ≤ 1) solid solutions have been prepared by the conventional solid-state and high-pressure vs. high-temperature methods. The effect of Bi(Zn1/2Ti1/2)O3 on the crystal structure has been investigated by synchrotron X-ray powder diffraction. Unlike most PbTiO3-based perovskites, the present system exhibits a continuously enhanced tetragonality (c/a) and large spontaneous polarization (PS) properties. The enhanced c/a is ascribed to the large spontaneous polarization displacements induced by the strong Pb/Bi–O hybridization and coupling interactions between Ti/Zn and Pb/Bi cations, which can be evidenced from the lattice dynamics study and first-principles calculations. Accordingly, the TC (i.e., x = 0.5) is expected to be approximately 1000 °C if its perovskite structure can be stabilized. The present study provides a route to obtain large-PS in PbTiO3-based ferroelectric materials by introducing isostructural perovskites with strong polarity. |
Author | Li, Guangqiang Fan, Xi'an Zhao, Pan Chen, Jun Fan, Longlong Hu, Lei Li, Yawei Yang, Ren Zhang, Linxing Yamamoto, Hajime Lin, Zheshuai Azuma, Masaki Jiang, Xingxing Xing, Xianran |
Author_xml | – sequence: 1 givenname: Pan surname: Zhao fullname: Zhao, Pan – sequence: 2 givenname: Xingxing surname: Jiang fullname: Jiang, Xingxing – sequence: 3 givenname: Jun surname: Chen fullname: Chen, Jun – sequence: 4 givenname: Lei surname: Hu fullname: Hu, Lei – sequence: 5 givenname: Hajime surname: Yamamoto fullname: Yamamoto, Hajime – sequence: 6 givenname: Linxing surname: Zhang fullname: Zhang, Linxing – sequence: 7 givenname: Longlong surname: Fan fullname: Fan, Longlong – sequence: 8 givenname: Xi'an surname: Fan fullname: Fan, Xi'an – sequence: 9 givenname: Yawei surname: Li fullname: Li, Yawei – sequence: 10 givenname: Guangqiang surname: Li fullname: Li, Guangqiang – sequence: 11 givenname: Ren surname: Yang fullname: Yang, Ren – sequence: 12 givenname: Zheshuai surname: Lin fullname: Lin, Zheshuai – sequence: 13 givenname: Masaki surname: Azuma fullname: Azuma, Masaki – sequence: 14 givenname: Xianran surname: Xing fullname: Xing, Xianran |
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SubjectTerms | Crystal structure Diffraction Displacements (lattice) Ferroelectric materials Ferroelectricity First principles Inorganic chemistry Lead titanates Perovskite structure Perovskites Polarity Polarization Solid solutions Synchrotron radiation X ray powder diffraction |
Title | Large spontaneous polarization in polar perovskites of PbTiO3–Bi(Zn1/2Ti1/2)O3 |
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