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Structural and transport properties of doped bismuth titanates and niobates. / Sadykov, V. A.; Koroleva, M. S.; Piir, I. V. et al.

In: Solid State Ionics, Vol. 315, 01.02.2018, p. 33-39.

Research output: Contribution to journalArticlepeer-review

Harvard

Sadykov, VA, Koroleva, MS, Piir, IV, Chezhina, NV, Korolev, DA, Skriabin, PI, Krasnov, AV, Sadovskaya, EM, Eremeev, NF, Nekipelov, SV & Sivkov, VN 2018, 'Structural and transport properties of doped bismuth titanates and niobates', Solid State Ionics, vol. 315, pp. 33-39. https://doi.org/10.1016/j.ssi.2017.12.008

APA

Sadykov, V. A., Koroleva, M. S., Piir, I. V., Chezhina, N. V., Korolev, D. A., Skriabin, P. I., Krasnov, A. V., Sadovskaya, E. M., Eremeev, N. F., Nekipelov, S. V., & Sivkov, V. N. (2018). Structural and transport properties of doped bismuth titanates and niobates. Solid State Ionics, 315, 33-39. https://doi.org/10.1016/j.ssi.2017.12.008

Vancouver

Sadykov VA, Koroleva MS, Piir IV, Chezhina NV, Korolev DA, Skriabin PI et al. Structural and transport properties of doped bismuth titanates and niobates. Solid State Ionics. 2018 Feb 1;315:33-39. doi: 10.1016/j.ssi.2017.12.008

Author

Sadykov, V. A. ; Koroleva, M. S. ; Piir, I. V. et al. / Structural and transport properties of doped bismuth titanates and niobates. In: Solid State Ionics. 2018 ; Vol. 315. pp. 33-39.

BibTeX

@article{24a955549774455c9dd1a61a0ee2ec5c,
title = "Structural and transport properties of doped bismuth titanates and niobates",
abstract = "Cobalt- or Zn-doped bismuth titanates and Mg + Cu-doped bismuth niobate were synthesized by the method of organic-inorganic precursors combustion. Distribution of dopants over the sites of the pyrochlore structure was elucidated by X-ray powder diffraction structure refinement and pycnometric density analysis. Zinc and cobalt cations are mainly located in Bi sites appearing also in Ti sites at their high content. Mg cations are located only in Nb sites, while Cu cations are equally distributed between Bi and Nb sites. Magnetic susceptibility data confirm Сo2 + state of cobalt atoms revealed by NEXAFS. Antiferromagnetic exchange appears when Сo atoms enter the titanium sites. Electronic conductivity of p-type dominates for Co-doped samples in the 160–750 °C temperature range. The oxygen mobility and surface reactivity were studied by the oxygen isotope heteroexchange with C18O2 in isothermal and temperature-programmed modes. Mobility of the lattice oxygen can be described by a homogeneous model. The oxygen mobility and surface reactivity are comparable for doped bismuth titanates and niobates correlating with conductivity and being the highest for Co and Cu-doped samples with disordered distribution of dopants between lattice sites. Classification codes A6630L A7280G A8120E A8170J B2130 B2520E",
keywords = "Bismuth titanates/niobates, Conductivity, Oxygen mobility, Structure, BI2TI2O7, LA, DIELECTRIC-PROPERTIES, PYROCHLORES, RELAXATION",
author = "Sadykov, {V. A.} and Koroleva, {M. S.} and Piir, {I. V.} and Chezhina, {N. V.} and Korolev, {D. A.} and Skriabin, {P. I.} and Krasnov, {A. V.} and Sadovskaya, {E. M.} and Eremeev, {N. F.} and Nekipelov, {S. V.} and Sivkov, {V. N.}",
note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",
year = "2018",
month = feb,
day = "1",
doi = "10.1016/j.ssi.2017.12.008",
language = "English",
volume = "315",
pages = "33--39",
journal = "Solid State Ionics",
issn = "0167-2738",
publisher = "Elsevier Science B.V.",

}

RIS

TY - JOUR

T1 - Structural and transport properties of doped bismuth titanates and niobates

AU - Sadykov, V. A.

AU - Koroleva, M. S.

AU - Piir, I. V.

AU - Chezhina, N. V.

AU - Korolev, D. A.

AU - Skriabin, P. I.

AU - Krasnov, A. V.

AU - Sadovskaya, E. M.

AU - Eremeev, N. F.

AU - Nekipelov, S. V.

AU - Sivkov, V. N.

N1 - Publisher Copyright: © 2017 Elsevier B.V.

PY - 2018/2/1

Y1 - 2018/2/1

N2 - Cobalt- or Zn-doped bismuth titanates and Mg + Cu-doped bismuth niobate were synthesized by the method of organic-inorganic precursors combustion. Distribution of dopants over the sites of the pyrochlore structure was elucidated by X-ray powder diffraction structure refinement and pycnometric density analysis. Zinc and cobalt cations are mainly located in Bi sites appearing also in Ti sites at their high content. Mg cations are located only in Nb sites, while Cu cations are equally distributed between Bi and Nb sites. Magnetic susceptibility data confirm Сo2 + state of cobalt atoms revealed by NEXAFS. Antiferromagnetic exchange appears when Сo atoms enter the titanium sites. Electronic conductivity of p-type dominates for Co-doped samples in the 160–750 °C temperature range. The oxygen mobility and surface reactivity were studied by the oxygen isotope heteroexchange with C18O2 in isothermal and temperature-programmed modes. Mobility of the lattice oxygen can be described by a homogeneous model. The oxygen mobility and surface reactivity are comparable for doped bismuth titanates and niobates correlating with conductivity and being the highest for Co and Cu-doped samples with disordered distribution of dopants between lattice sites. Classification codes A6630L A7280G A8120E A8170J B2130 B2520E

AB - Cobalt- or Zn-doped bismuth titanates and Mg + Cu-doped bismuth niobate were synthesized by the method of organic-inorganic precursors combustion. Distribution of dopants over the sites of the pyrochlore structure was elucidated by X-ray powder diffraction structure refinement and pycnometric density analysis. Zinc and cobalt cations are mainly located in Bi sites appearing also in Ti sites at their high content. Mg cations are located only in Nb sites, while Cu cations are equally distributed between Bi and Nb sites. Magnetic susceptibility data confirm Сo2 + state of cobalt atoms revealed by NEXAFS. Antiferromagnetic exchange appears when Сo atoms enter the titanium sites. Electronic conductivity of p-type dominates for Co-doped samples in the 160–750 °C temperature range. The oxygen mobility and surface reactivity were studied by the oxygen isotope heteroexchange with C18O2 in isothermal and temperature-programmed modes. Mobility of the lattice oxygen can be described by a homogeneous model. The oxygen mobility and surface reactivity are comparable for doped bismuth titanates and niobates correlating with conductivity and being the highest for Co and Cu-doped samples with disordered distribution of dopants between lattice sites. Classification codes A6630L A7280G A8120E A8170J B2130 B2520E

KW - Bismuth titanates/niobates

KW - Conductivity

KW - Oxygen mobility

KW - Structure

KW - BI2TI2O7

KW - LA

KW - DIELECTRIC-PROPERTIES

KW - PYROCHLORES

KW - RELAXATION

UR - http://www.scopus.com/inward/record.url?scp=85037523162&partnerID=8YFLogxK

U2 - 10.1016/j.ssi.2017.12.008

DO - 10.1016/j.ssi.2017.12.008

M3 - Article

AN - SCOPUS:85037523162

VL - 315

SP - 33

EP - 39

JO - Solid State Ionics

JF - Solid State Ionics

SN - 0167-2738

ER -

ID: 9160978