Crystal structure, impedance and broadband dielectric spectra of ordered scheelite-structured Bi(Sc1/3Mo2/3)O4 ceramic

Di Zhou; Li Xia Pang; Da Wei Wang; Huan Huan Guo; Fan Yang; Ze Ming Qi; Chun Li; Biao Bing Jin; Ian M. Reaney

doi:10.1016/j.jeurceramsoc.2017.12.044

Crystal structure, impedance and broadband dielectric spectra of ordered scheelite-structured Bi(Sc_1/3Mo_2/3)O₄ ceramic

Di Zhou
, Li Xia Pang
, Da Wei Wang
, Huan Huan Guo
, Fan Yang
, Ze Ming Qi
, Chun Li
, Biao Bing Jin
, Ian M. Reaney

Faculty of Electronic and Information Engineering

University of Sheffield
Xi'an Technological University
Xi'an Jiaotong University
University of Science and Technology of China
Nanjing University

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

48 Scopus citations

Abstract

Bi(Sc_1/3Mo_2/3)O₄ ceramics were prepared via solid state reaction method. It crystallized with an ordered scheelite-related structure (a = 16.9821(9) Å, b = 11.6097(3) Å, c = 5.3099(3) Å and β = 104.649(2)°) with a space group C12/C1, in which Bi³⁺, Sc³⁺ and Mo⁶⁺ are −8, −6 and −4 coordinated, respectively. Bi(Sc_1/3Mo_2/3)O₄ ceramics were densifiedat 915 °C, giving a permittivity (ε_r) ∼24.4, quality factor (Qf, Q = 1/dielectric loss, f = resonant frequency) ∼48, 100 GHz and temperature coefficient of resonant frequency (TCF) ∼ −68 ppm/°C. Impedance spectroscopy revealed that there was only a bulk response for conductivity with activation energy (E_a) ∼0.97 eV, suggesting the compound is electrically and chemically homogeneous. Wide band dielectric spectra were employed to study the dielectric response of Bi(Sc_1/3Mo_2/3)O₄ from 20 Hz to 30 THz. ε_r was stable from 20 Hz to the GHz region, in which only ionic and electron displacive polarization contributed to the ε_r.

Original language	English
Pages (from-to)	1556-1561
Number of pages	6
Journal	Journal of the European Ceramic Society
Volume	38
Issue number	4
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2017.12.044
State	Published - Apr 2018

Keywords

Bi(ScMo)O
Low temperature co-fired ceramic (LTCC)
Microwave dielectric

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10.1016/j.jeurceramsoc.2017.12.044

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@article{f0fd07f01f194d92abacb72ea9b5375c,

title = "Crystal structure, impedance and broadband dielectric spectra of ordered scheelite-structured Bi(Sc1/3Mo2/3)O4 ceramic",

abstract = "Bi(Sc1/3Mo2/3)O4 ceramics were prepared via solid state reaction method. It crystallized with an ordered scheelite-related structure (a = 16.9821(9) {\AA}, b = 11.6097(3) {\AA}, c = 5.3099(3) {\AA} and β = 104.649(2)°) with a space group C12/C1, in which Bi3+, Sc3+ and Mo6+ are −8, −6 and −4 coordinated, respectively. Bi(Sc1/3Mo2/3)O4 ceramics were densifiedat 915 °C, giving a permittivity (εr) ∼24.4, quality factor (Qf, Q = 1/dielectric loss, f = resonant frequency) ∼48, 100 GHz and temperature coefficient of resonant frequency (TCF) ∼ −68 ppm/°C. Impedance spectroscopy revealed that there was only a bulk response for conductivity with activation energy (Ea) ∼0.97 eV, suggesting the compound is electrically and chemically homogeneous. Wide band dielectric spectra were employed to study the dielectric response of Bi(Sc1/3Mo2/3)O4 from 20 Hz to 30 THz. εr was stable from 20 Hz to the GHz region, in which only ionic and electron displacive polarization contributed to the εr.",

keywords = "Bi(ScMo)O, Low temperature co-fired ceramic (LTCC), Microwave dielectric",

author = "Di Zhou and Pang, \{Li Xia\} and Wang, \{Da Wei\} and Guo, \{Huan Huan\} and Fan Yang and Qi, \{Ze Ming\} and Chun Li and Jin, \{Biao Bing\} and Reaney, \{Ian M.\}",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

year = "2018",

month = apr,

doi = "10.1016/j.jeurceramsoc.2017.12.044",

language = "英语",

volume = "38",

pages = "1556--1561",

journal = "Journal of the European Ceramic Society",

issn = "0955-2219",

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number = "4",

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TY - JOUR

T1 - Crystal structure, impedance and broadband dielectric spectra of ordered scheelite-structured Bi(Sc1/3Mo2/3)O4 ceramic

AU - Zhou, Di

AU - Pang, Li Xia

AU - Wang, Da Wei

AU - Guo, Huan Huan

AU - Yang, Fan

AU - Qi, Ze Ming

AU - Li, Chun

AU - Jin, Biao Bing

AU - Reaney, Ian M.

PY - 2018/4

Y1 - 2018/4

N2 - Bi(Sc1/3Mo2/3)O4 ceramics were prepared via solid state reaction method. It crystallized with an ordered scheelite-related structure (a = 16.9821(9) Å, b = 11.6097(3) Å, c = 5.3099(3) Å and β = 104.649(2)°) with a space group C12/C1, in which Bi3+, Sc3+ and Mo6+ are −8, −6 and −4 coordinated, respectively. Bi(Sc1/3Mo2/3)O4 ceramics were densifiedat 915 °C, giving a permittivity (εr) ∼24.4, quality factor (Qf, Q = 1/dielectric loss, f = resonant frequency) ∼48, 100 GHz and temperature coefficient of resonant frequency (TCF) ∼ −68 ppm/°C. Impedance spectroscopy revealed that there was only a bulk response for conductivity with activation energy (Ea) ∼0.97 eV, suggesting the compound is electrically and chemically homogeneous. Wide band dielectric spectra were employed to study the dielectric response of Bi(Sc1/3Mo2/3)O4 from 20 Hz to 30 THz. εr was stable from 20 Hz to the GHz region, in which only ionic and electron displacive polarization contributed to the εr.

AB - Bi(Sc1/3Mo2/3)O4 ceramics were prepared via solid state reaction method. It crystallized with an ordered scheelite-related structure (a = 16.9821(9) Å, b = 11.6097(3) Å, c = 5.3099(3) Å and β = 104.649(2)°) with a space group C12/C1, in which Bi3+, Sc3+ and Mo6+ are −8, −6 and −4 coordinated, respectively. Bi(Sc1/3Mo2/3)O4 ceramics were densifiedat 915 °C, giving a permittivity (εr) ∼24.4, quality factor (Qf, Q = 1/dielectric loss, f = resonant frequency) ∼48, 100 GHz and temperature coefficient of resonant frequency (TCF) ∼ −68 ppm/°C. Impedance spectroscopy revealed that there was only a bulk response for conductivity with activation energy (Ea) ∼0.97 eV, suggesting the compound is electrically and chemically homogeneous. Wide band dielectric spectra were employed to study the dielectric response of Bi(Sc1/3Mo2/3)O4 from 20 Hz to 30 THz. εr was stable from 20 Hz to the GHz region, in which only ionic and electron displacive polarization contributed to the εr.

KW - Bi(ScMo)O

KW - Low temperature co-fired ceramic (LTCC)

KW - Microwave dielectric

UR - https://www.scopus.com/pages/publications/85039748351

U2 - 10.1016/j.jeurceramsoc.2017.12.044

DO - 10.1016/j.jeurceramsoc.2017.12.044

M3 - 文章

AN - SCOPUS:85039748351

SN - 0955-2219

VL - 38

SP - 1556

EP - 1561

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

IS - 4

ER -

Crystal structure, impedance and broadband dielectric spectra of ordered scheelite-structured Bi(Sc_1/3Mo_2/3)O₄ ceramic

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Keywords

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