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Comparative Study of Electrical Conduction and Oxygen Diffusion in the Rhombohedral and Bixbyite Ln 6 MoO 12 (Ln = Er, Tm, Yb) Polymorphs. / Shlyakhtina, Anna V.; Lyskov, Nikolay V.; Avdeev, Maxim et al.

In: Inorganic Chemistry, Vol. 58, No. 7, 01.04.2019, p. 4275-4288.

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

Harvard

Shlyakhtina, AV, Lyskov, NV, Avdeev, M, Goffman, VG, Gorshkov, NV, Knotko, AV, Kolbanev, IV, Karyagina, OK, Maslakov, KI, Shcherbakova, LG, Sadovskaya, EM, Sadykov, VA & Eremeev, NF 2019, 'Comparative Study of Electrical Conduction and Oxygen Diffusion in the Rhombohedral and Bixbyite Ln 6 MoO 12 (Ln = Er, Tm, Yb) Polymorphs', Inorganic Chemistry, vol. 58, no. 7, pp. 4275-4288. https://doi.org/10.1021/acs.inorgchem.8b03397

APA

Shlyakhtina, A. V., Lyskov, N. V., Avdeev, M., Goffman, V. G., Gorshkov, N. V., Knotko, A. V., Kolbanev, I. V., Karyagina, O. K., Maslakov, K. I., Shcherbakova, L. G., Sadovskaya, E. M., Sadykov, V. A., & Eremeev, N. F. (2019). Comparative Study of Electrical Conduction and Oxygen Diffusion in the Rhombohedral and Bixbyite Ln 6 MoO 12 (Ln = Er, Tm, Yb) Polymorphs. Inorganic Chemistry, 58(7), 4275-4288. https://doi.org/10.1021/acs.inorgchem.8b03397

Vancouver

Shlyakhtina AV, Lyskov NV, Avdeev M, Goffman VG, Gorshkov NV, Knotko AV et al. Comparative Study of Electrical Conduction and Oxygen Diffusion in the Rhombohedral and Bixbyite Ln 6 MoO 12 (Ln = Er, Tm, Yb) Polymorphs. Inorganic Chemistry. 2019 Apr 1;58(7):4275-4288. doi: 10.1021/acs.inorgchem.8b03397

Author

Shlyakhtina, Anna V. ; Lyskov, Nikolay V. ; Avdeev, Maxim et al. / Comparative Study of Electrical Conduction and Oxygen Diffusion in the Rhombohedral and Bixbyite Ln 6 MoO 12 (Ln = Er, Tm, Yb) Polymorphs. In: Inorganic Chemistry. 2019 ; Vol. 58, No. 7. pp. 4275-4288.

BibTeX

@article{0a7c8eb8facd4b08b0834115847f1db5,
title = "Comparative Study of Electrical Conduction and Oxygen Diffusion in the Rhombohedral and Bixbyite Ln 6 MoO 12 (Ln = Er, Tm, Yb) Polymorphs",
abstract = " Electrical conduction and oxygen diffusion mobility in the bixbyite (Ia3) and rhombohedral (R3) polymorphs of the Ln 6 MoO 12-Δ (Ln = Er, Tm, Yb; Δ = δ, δ1, δ2; δ1 > δ2) heavy lanthanide molybdates, belonging to new, previously unexplored classes of potential mixed (ionic-electronic) conductors, have been studied in the range of 200-900 °C. The oxygen self-diffusion coefficient in bixbyite (Ia3) Yb 6 MoO 12-δ phase estimated by the temperature-programmed heteroexchange with C 18 O 2 was shown to be much higher than that for rhombohedral (R3) RI (with large oxygen deficiency) and (R3) RII (with small oxygen deficiency) Ln 6 MoO 12-Δ (Ln = Tm, Yb; Δ = δ1; δ1 > δ2) oxides. According to the activation energy for total conduction in ambient air, 0.99, 0.93, and 1.01 eV in Er 6 MoO 12-δ , Tm 6 MoO 12-δ, and Yb 6 MoO 12-δ bixbyites, respectively, oxygen ion conductivity prevails in the range ∼200-500 °C. Oxygen mobility data for the rhombohedral Ln 6 MoO 12-Δ (Ln = Er, Tm, Yb; Δ = δ1, δ2) phases RI and RII indicate that the oxygen in these phases exhibits mobility at much higher temperatures, such as those above 600-700 °C. Accordingly, below 600-700 °C they have predominantly electronic conductivity. As shown by total conductivity study of Ln 6 MoO 12-δ (Ln = Er, Tm, Yb) bixbyites (Ia3) and rhombohedral phases Ln 6 MoO 12-Δ (Ln = Er, Tm, Yb; Δ = δ1, δ2) (R3) in dry and wet air, the proton conductivity contribution exists only in Ln 6 MoO 12-δ (Ln = Er, Tm, Yb) bixbyites up to 450-600 °C and decreases with a decreasing of the lanthanide ionic radius. The obtained data on the mobility of oxygen and the presence of proton contribution in bixbyites in the 300-600 °C temperature range make it possible to confirm unequivocally that Ln 6 MoO 12-δ (Ln = Er, Tm, Yb) bixbyites are mixed electron-proton conductors at these temperatures.",
keywords = "FLUORITE-RELATED SUPERSTRUCTURE, RARE-EARTH, TRANSPORT-PROPERTIES, LN(6-X)MOO(12-DELTA) LN, CRYSTAL-CHEMISTRY, PHASE-EQUILIBRIA, SYSTEM, ION, X=0, ELECTROLYTES",
author = "Shlyakhtina, {Anna V.} and Lyskov, {Nikolay V.} and Maxim Avdeev and Goffman, {Vladimir G.} and Gorshkov, {Nikolay V.} and Knotko, {Alexander V.} and Kolbanev, {Igor V.} and Karyagina, {Olga K.} and Maslakov, {Konstantin I.} and Shcherbakova, {Lidia G.} and Sadovskaya, {Ekaterina M.} and Sadykov, {Vladislav A.} and Eremeev, {Nikita F.}",
year = "2019",
month = apr,
day = "1",
doi = "10.1021/acs.inorgchem.8b03397",
language = "English",
volume = "58",
pages = "4275--4288",
journal = "Inorganic Chemistry",
issn = "0020-1669",
publisher = "American Chemical Society",
number = "7",

}

RIS

TY - JOUR

T1 - Comparative Study of Electrical Conduction and Oxygen Diffusion in the Rhombohedral and Bixbyite Ln 6 MoO 12 (Ln = Er, Tm, Yb) Polymorphs

AU - Shlyakhtina, Anna V.

AU - Lyskov, Nikolay V.

AU - Avdeev, Maxim

AU - Goffman, Vladimir G.

AU - Gorshkov, Nikolay V.

AU - Knotko, Alexander V.

AU - Kolbanev, Igor V.

AU - Karyagina, Olga K.

AU - Maslakov, Konstantin I.

AU - Shcherbakova, Lidia G.

AU - Sadovskaya, Ekaterina M.

AU - Sadykov, Vladislav A.

AU - Eremeev, Nikita F.

PY - 2019/4/1

Y1 - 2019/4/1

N2 - Electrical conduction and oxygen diffusion mobility in the bixbyite (Ia3) and rhombohedral (R3) polymorphs of the Ln 6 MoO 12-Δ (Ln = Er, Tm, Yb; Δ = δ, δ1, δ2; δ1 > δ2) heavy lanthanide molybdates, belonging to new, previously unexplored classes of potential mixed (ionic-electronic) conductors, have been studied in the range of 200-900 °C. The oxygen self-diffusion coefficient in bixbyite (Ia3) Yb 6 MoO 12-δ phase estimated by the temperature-programmed heteroexchange with C 18 O 2 was shown to be much higher than that for rhombohedral (R3) RI (with large oxygen deficiency) and (R3) RII (with small oxygen deficiency) Ln 6 MoO 12-Δ (Ln = Tm, Yb; Δ = δ1; δ1 > δ2) oxides. According to the activation energy for total conduction in ambient air, 0.99, 0.93, and 1.01 eV in Er 6 MoO 12-δ , Tm 6 MoO 12-δ, and Yb 6 MoO 12-δ bixbyites, respectively, oxygen ion conductivity prevails in the range ∼200-500 °C. Oxygen mobility data for the rhombohedral Ln 6 MoO 12-Δ (Ln = Er, Tm, Yb; Δ = δ1, δ2) phases RI and RII indicate that the oxygen in these phases exhibits mobility at much higher temperatures, such as those above 600-700 °C. Accordingly, below 600-700 °C they have predominantly electronic conductivity. As shown by total conductivity study of Ln 6 MoO 12-δ (Ln = Er, Tm, Yb) bixbyites (Ia3) and rhombohedral phases Ln 6 MoO 12-Δ (Ln = Er, Tm, Yb; Δ = δ1, δ2) (R3) in dry and wet air, the proton conductivity contribution exists only in Ln 6 MoO 12-δ (Ln = Er, Tm, Yb) bixbyites up to 450-600 °C and decreases with a decreasing of the lanthanide ionic radius. The obtained data on the mobility of oxygen and the presence of proton contribution in bixbyites in the 300-600 °C temperature range make it possible to confirm unequivocally that Ln 6 MoO 12-δ (Ln = Er, Tm, Yb) bixbyites are mixed electron-proton conductors at these temperatures.

AB - Electrical conduction and oxygen diffusion mobility in the bixbyite (Ia3) and rhombohedral (R3) polymorphs of the Ln 6 MoO 12-Δ (Ln = Er, Tm, Yb; Δ = δ, δ1, δ2; δ1 > δ2) heavy lanthanide molybdates, belonging to new, previously unexplored classes of potential mixed (ionic-electronic) conductors, have been studied in the range of 200-900 °C. The oxygen self-diffusion coefficient in bixbyite (Ia3) Yb 6 MoO 12-δ phase estimated by the temperature-programmed heteroexchange with C 18 O 2 was shown to be much higher than that for rhombohedral (R3) RI (with large oxygen deficiency) and (R3) RII (with small oxygen deficiency) Ln 6 MoO 12-Δ (Ln = Tm, Yb; Δ = δ1; δ1 > δ2) oxides. According to the activation energy for total conduction in ambient air, 0.99, 0.93, and 1.01 eV in Er 6 MoO 12-δ , Tm 6 MoO 12-δ, and Yb 6 MoO 12-δ bixbyites, respectively, oxygen ion conductivity prevails in the range ∼200-500 °C. Oxygen mobility data for the rhombohedral Ln 6 MoO 12-Δ (Ln = Er, Tm, Yb; Δ = δ1, δ2) phases RI and RII indicate that the oxygen in these phases exhibits mobility at much higher temperatures, such as those above 600-700 °C. Accordingly, below 600-700 °C they have predominantly electronic conductivity. As shown by total conductivity study of Ln 6 MoO 12-δ (Ln = Er, Tm, Yb) bixbyites (Ia3) and rhombohedral phases Ln 6 MoO 12-Δ (Ln = Er, Tm, Yb; Δ = δ1, δ2) (R3) in dry and wet air, the proton conductivity contribution exists only in Ln 6 MoO 12-δ (Ln = Er, Tm, Yb) bixbyites up to 450-600 °C and decreases with a decreasing of the lanthanide ionic radius. The obtained data on the mobility of oxygen and the presence of proton contribution in bixbyites in the 300-600 °C temperature range make it possible to confirm unequivocally that Ln 6 MoO 12-δ (Ln = Er, Tm, Yb) bixbyites are mixed electron-proton conductors at these temperatures.

KW - FLUORITE-RELATED SUPERSTRUCTURE

KW - RARE-EARTH

KW - TRANSPORT-PROPERTIES

KW - LN(6-X)MOO(12-DELTA) LN

KW - CRYSTAL-CHEMISTRY

KW - PHASE-EQUILIBRIA

KW - SYSTEM

KW - ION

KW - X=0

KW - ELECTROLYTES

UR - http://www.scopus.com/inward/record.url?scp=85063667686&partnerID=8YFLogxK

U2 - 10.1021/acs.inorgchem.8b03397

DO - 10.1021/acs.inorgchem.8b03397

M3 - Article

C2 - 30888157

AN - SCOPUS:85063667686

VL - 58

SP - 4275

EP - 4288

JO - Inorganic Chemistry

JF - Inorganic Chemistry

SN - 0020-1669

IS - 7

ER -

ID: 19038538