Negative magnetodielectric effect in CaCu3Ti4O 12

Kai Chen; Chenxi Huang; Xirui Zhang; Yuanlie Yu; Kenny Lau; Wanbiao Hu; Qian Li; Jian Wang; Weiwei Lin; Junming Liu; Li Qiu; Jinsong Zhu; Ray L. Withers

doi:10.1063/1.4851815

Negative magnetodielectric effect in CaCu₃Ti₄O ₁₂

Kai Chen^*, Chenxi Huang, Xirui Zhang, Yuanlie Yu, Kenny Lau, Wanbiao Hu, Qian Li, Jian Wang, Weiwei Lin, Junming Liu, Li Qiu, Jinsong Zhu, Ray L. Withers

^*Corresponding author for this work

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

13 Citations (Scopus)

Abstract

Real part of complex relative dielectric value is relatively decreased as large as ∼ 5 % from 50 K to 200 K in CaCu₃Ti₄O ₁₂, by applying a 6-T static magnetic field. CaCu₃Ti ₄O₁₂ is thus implied primarily by the negative magnetodielectric effect, as a unified dielectric system in which 1-D finite dipole chains of B-site titanium ions, coexist with a collective of polaron-like 3d-electrons of A-site copper ions: the dipole chains are thermally activated for lattice ionic polarization above 50 K, and suppressed by the short-range hop of these quasi-particles, while their long-range movement are for bulk electronic polarization above 151 K.

Original language	English
Article number	234104
Journal	Journal of Applied Physics
Volume	114
Issue number	23
DOIs	https://doi.org/10.1063/1.4851815
Publication status	Published - 21 Dec 2013

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abstract = "Real part of complex relative dielectric value is relatively decreased as large as ∼ 5 % from 50 K to 200 K in CaCu3Ti4O 12, by applying a 6-T static magnetic field. CaCu3Ti 4O12 is thus implied primarily by the negative magnetodielectric effect, as a unified dielectric system in which 1-D finite dipole chains of B-site titanium ions, coexist with a collective of polaron-like 3d-electrons of A-site copper ions: the dipole chains are thermally activated for lattice ionic polarization above 50 K, and suppressed by the short-range hop of these quasi-particles, while their long-range movement are for bulk electronic polarization above 151 K.",

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T1 - Negative magnetodielectric effect in CaCu3Ti4O 12

AU - Chen, Kai

AU - Huang, Chenxi

AU - Zhang, Xirui

AU - Yu, Yuanlie

AU - Lau, Kenny

AU - Hu, Wanbiao

AU - Li, Qian

AU - Wang, Jian

AU - Lin, Weiwei

AU - Liu, Junming

AU - Qiu, Li

AU - Zhu, Jinsong

AU - Withers, Ray L.

PY - 2013/12/21

Y1 - 2013/12/21

N2 - Real part of complex relative dielectric value is relatively decreased as large as ∼ 5 % from 50 K to 200 K in CaCu3Ti4O 12, by applying a 6-T static magnetic field. CaCu3Ti 4O12 is thus implied primarily by the negative magnetodielectric effect, as a unified dielectric system in which 1-D finite dipole chains of B-site titanium ions, coexist with a collective of polaron-like 3d-electrons of A-site copper ions: the dipole chains are thermally activated for lattice ionic polarization above 50 K, and suppressed by the short-range hop of these quasi-particles, while their long-range movement are for bulk electronic polarization above 151 K.

AB - Real part of complex relative dielectric value is relatively decreased as large as ∼ 5 % from 50 K to 200 K in CaCu3Ti4O 12, by applying a 6-T static magnetic field. CaCu3Ti 4O12 is thus implied primarily by the negative magnetodielectric effect, as a unified dielectric system in which 1-D finite dipole chains of B-site titanium ions, coexist with a collective of polaron-like 3d-electrons of A-site copper ions: the dipole chains are thermally activated for lattice ionic polarization above 50 K, and suppressed by the short-range hop of these quasi-particles, while their long-range movement are for bulk electronic polarization above 151 K.

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DO - 10.1063/1.4851815

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SN - 0021-8979

VL - 114

JO - Journal of Applied Physics

JF - Journal of Applied Physics

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ER -

Negative magnetodielectric effect in CaCu₃Ti₄O ₁₂

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