Electronic structure of Mn-doped CaCu3Ti4O12

Standard

Electronic structure of Mn-doped CaCu₃Ti₄O₁₂ : An XPS, ESR and NEXAFS study. / Zhuk, N. A.; Lutoev, V. P.; Makeev, B. A.; Nekipelov, S. V.; Koroleva, A. V.; Kharton, V. V.; Korolev, R. I.; Koksharova, L. A.

In: Ceramics International, Vol. 47, No. 7, 01.04.2021, p. 9923-9932.

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

Harvard

Zhuk, NA, Lutoev, VP, Makeev, BA, Nekipelov, SV, Koroleva, AV, Kharton, VV, Korolev, RI & Koksharova, LA 2021, 'Electronic structure of Mn-doped CaCu₃Ti₄O₁₂: An XPS, ESR and NEXAFS study', Ceramics International, vol. 47, no. 7, pp. 9923-9932. https://doi.org/10.1016/j.ceramint.2020.12.136

APA

Zhuk, N. A., Lutoev, V. P., Makeev, B. A., Nekipelov, S. V., Koroleva, A. V., Kharton, V. V., Korolev, R. I., & Koksharova, L. A. (2021). Electronic structure of Mn-doped CaCu₃Ti₄O₁₂: An XPS, ESR and NEXAFS study. Ceramics International, 47(7), 9923-9932. https://doi.org/10.1016/j.ceramint.2020.12.136

Vancouver

Zhuk NA, Lutoev VP, Makeev BA, Nekipelov SV, Koroleva AV, Kharton VV et al. Electronic structure of Mn-doped CaCu₃Ti₄O₁₂: An XPS, ESR and NEXAFS study. Ceramics International. 2021 Apr 1;47(7):9923-9932. https://doi.org/10.1016/j.ceramint.2020.12.136

Author

Zhuk, N. A. ; Lutoev, V. P. ; Makeev, B. A. ; Nekipelov, S. V. ; Koroleva, A. V. ; Kharton, V. V. ; Korolev, R. I. ; Koksharova, L. A. / Electronic structure of Mn-doped CaCu₃Ti₄O₁₂ : An XPS, ESR and NEXAFS study. In: Ceramics International. 2021 ; Vol. 47, No. 7. pp. 9923-9932.

BibTeX

@article{b63d65dc83cb453cbadbf79bb60e1f37,

title = "Electronic structure of Mn-doped CaCu3Ti4O12: An XPS, ESR and NEXAFS study",

abstract = "Mn-doped CCTO samples were synthesized using standard ceramic technology. Two series of samples of the composition CaCu3Ti4-4xMn4xO12-δ and CaCu3-3xMn3xTi4O12+δ (0.005 ≤ х≤0.06) have been investigated. According to XRD data, the samples contain copper oxide (less than 1 mol %), the largest amount of which is in CaCu3Ti4-4xMn4xO12-δ. According to XPS and NEXAFS spectroscopy, a complex mixture of Mn (II), Mn (III), Mn (IV) ions is recorded in both series of samples. In both series, Mn (II) ions are reliably determined, in large amounts in CaCu3-3xMn3xTi4O12+δ. In the ESR spectra of both series of Mn-doped CCTO samples, the exchange-narrowed line (g~2.149 at RT) broadens and rapidly degrades as the content of the doping impurity increases; a broad signal appears in the spectrum with a center in the region g = 2. In the spectra of the CaCu3Ti4-4xMn4xO12-δ series, starting from x = 0.02, a sextet of relatively narrow lines appears in the g = 2 region of the hyperfine (HF). With an increase in the Mn content from x = 0.02 to 0.06, the sextet intensity approximately doubles. The observed sextet of isolated Mn2+ ions most likely belongs to Mn2+ ions, which replace Ca2+ ions in the unit cell of perovskite (CaTiO3).",

keywords = "Calcium-copper titanate, ESR, Magnetic properties, Manganese atoms, XPS and NEXAFS spectroscopy",

author = "Zhuk, {N. A.} and Lutoev, {V. P.} and Makeev, {B. A.} and Nekipelov, {S. V.} and Koroleva, {A. V.} and Kharton, {V. V.} and Korolev, {R. I.} and Koksharova, {L. A.}",

year = "2021",

month = apr,

day = "1",

doi = "10.1016/j.ceramint.2020.12.136",

language = "English",

volume = "47",

pages = "9923--9932",

journal = "Ceramics International",

issn = "0272-8842",

publisher = "Elsevier",

number = "7",

}

RIS

TY - JOUR

T1 - Electronic structure of Mn-doped CaCu3Ti4O12

T2 - An XPS, ESR and NEXAFS study

AU - Zhuk, N. A.

AU - Lutoev, V. P.

AU - Makeev, B. A.

AU - Nekipelov, S. V.

AU - Koroleva, A. V.

AU - Kharton, V. V.

AU - Korolev, R. I.

AU - Koksharova, L. A.

PY - 2021/4/1

Y1 - 2021/4/1

N2 - Mn-doped CCTO samples were synthesized using standard ceramic technology. Two series of samples of the composition CaCu3Ti4-4xMn4xO12-δ and CaCu3-3xMn3xTi4O12+δ (0.005 ≤ х≤0.06) have been investigated. According to XRD data, the samples contain copper oxide (less than 1 mol %), the largest amount of which is in CaCu3Ti4-4xMn4xO12-δ. According to XPS and NEXAFS spectroscopy, a complex mixture of Mn (II), Mn (III), Mn (IV) ions is recorded in both series of samples. In both series, Mn (II) ions are reliably determined, in large amounts in CaCu3-3xMn3xTi4O12+δ. In the ESR spectra of both series of Mn-doped CCTO samples, the exchange-narrowed line (g~2.149 at RT) broadens and rapidly degrades as the content of the doping impurity increases; a broad signal appears in the spectrum with a center in the region g = 2. In the spectra of the CaCu3Ti4-4xMn4xO12-δ series, starting from x = 0.02, a sextet of relatively narrow lines appears in the g = 2 region of the hyperfine (HF). With an increase in the Mn content from x = 0.02 to 0.06, the sextet intensity approximately doubles. The observed sextet of isolated Mn2+ ions most likely belongs to Mn2+ ions, which replace Ca2+ ions in the unit cell of perovskite (CaTiO3).

AB - Mn-doped CCTO samples were synthesized using standard ceramic technology. Two series of samples of the composition CaCu3Ti4-4xMn4xO12-δ and CaCu3-3xMn3xTi4O12+δ (0.005 ≤ х≤0.06) have been investigated. According to XRD data, the samples contain copper oxide (less than 1 mol %), the largest amount of which is in CaCu3Ti4-4xMn4xO12-δ. According to XPS and NEXAFS spectroscopy, a complex mixture of Mn (II), Mn (III), Mn (IV) ions is recorded in both series of samples. In both series, Mn (II) ions are reliably determined, in large amounts in CaCu3-3xMn3xTi4O12+δ. In the ESR spectra of both series of Mn-doped CCTO samples, the exchange-narrowed line (g~2.149 at RT) broadens and rapidly degrades as the content of the doping impurity increases; a broad signal appears in the spectrum with a center in the region g = 2. In the spectra of the CaCu3Ti4-4xMn4xO12-δ series, starting from x = 0.02, a sextet of relatively narrow lines appears in the g = 2 region of the hyperfine (HF). With an increase in the Mn content from x = 0.02 to 0.06, the sextet intensity approximately doubles. The observed sextet of isolated Mn2+ ions most likely belongs to Mn2+ ions, which replace Ca2+ ions in the unit cell of perovskite (CaTiO3).

KW - Calcium-copper titanate

KW - ESR

KW - Magnetic properties

KW - Manganese atoms

KW - XPS and NEXAFS spectroscopy

UR - http://www.scopus.com/inward/record.url?scp=85099523263&partnerID=8YFLogxK

U2 - 10.1016/j.ceramint.2020.12.136

DO - 10.1016/j.ceramint.2020.12.136

M3 - Article

AN - SCOPUS:85099523263

VL - 47

SP - 9923

EP - 9932

JO - Ceramics International

JF - Ceramics International

SN - 0272-8842

IS - 7

ER -

ID: 78270096