XAS spectra of Ce2[MnN3] at the Ce-M4,5, Ce-L3, Mn-L2,3 and N-K thresholds

R. Niewa; Z. Hu; C. Grazioli; U. Rößler; M. S. Golden; M. Knupfer; J. Fink; H. Giefers; G. Wortmann; F. M.F. De Groot; F. J. DiSalvo

doi:10.1016/S0925-8388(02)00519-4

XAS spectra of Ce₂[MnN₃] at the Ce-M_4,5, Ce-L₃, Mn-L_2,3 and N-K thresholds

R. Niewa, Z. Hu, C. Grazioli, U. Rößler, M. S. Golden, M. Knupfer, J. Fink, H. Giefers, G. Wortmann, F. M.F. De Groot, F. J. DiSalvo

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

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Abstract

The X-ray absorption spectroscopy at the Ce-M_4,5, Ce-L₃, Mn-L_2,3 and N-K thresholds was used to study the electronic and magnetic structure of the recently obtained Ce₂[MnN₃]. Manganese is found to be in a state similar to that in η-Mn₃N₂, with strong covalency between Mn and N. The multiple peaked structure in the Ce-M_4,5 and Ce-L₃ XAS spectra indicates that the valence state of cerium in Ce₂[MnN₃] is only slightly lower than that found in CeO₂ containing Ce^IV with a strong covalent mixture between Ce 4f and ligand 2p states. By simulating the Ce-L₃ XAS spectrum using a simplified Anderson impurity model the 4f occupancy was found to be 0.52 for Ce₂[MnN₃] compared to 0.49 for CeO₂ in the ground state.

Original language	English
Pages (from-to)	129-133
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	346
Issue number	1-2
DOIs	https://doi.org/10.1016/S0925-8388(02)00519-4
State	Published - 18 Nov 2002
Externally published	Yes

Keywords

Electronic state
Nitridomanganates
Rare earth
Ternary nitrides
XAS

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10.1016/S0925-8388(02)00519-4

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@article{0660733442c04a8da09ca60b69bd2ead,

title = "XAS spectra of Ce2[MnN3] at the Ce-M4,5, Ce-L3, Mn-L2,3 and N-K thresholds",

abstract = "The X-ray absorption spectroscopy at the Ce-M4,5, Ce-L3, Mn-L2,3 and N-K thresholds was used to study the electronic and magnetic structure of the recently obtained Ce2[MnN3]. Manganese is found to be in a state similar to that in η-Mn3N2, with strong covalency between Mn and N. The multiple peaked structure in the Ce-M4,5 and Ce-L3 XAS spectra indicates that the valence state of cerium in Ce2[MnN3] is only slightly lower than that found in CeO2 containing CeIV with a strong covalent mixture between Ce 4f and ligand 2p states. By simulating the Ce-L3 XAS spectrum using a simplified Anderson impurity model the 4f occupancy was found to be 0.52 for Ce2[MnN3] compared to 0.49 for CeO2 in the ground state.",

keywords = "Electronic state, Nitridomanganates, Rare earth, Ternary nitrides, XAS",

author = "R. Niewa and Z. Hu and C. Grazioli and U. R{\"o}{\ss}ler and Golden, {M. S.} and M. Knupfer and J. Fink and H. Giefers and G. Wortmann and {De Groot}, {F. M.F.} and DiSalvo, {F. J.}",

note = "Funding Information: We acknowledge financial support by the Deutsche Forschungsgemeinschaft (Fi-439/7-1 and SFB 463 {\textquoteleft}Seltenerd-{\"U}bergangsmetallverbindungen: Struktur, Magnetismus und Transport{\textquoteright}). RN would like to thank Professor R. Kniep, Dr Yu. Grin, Dr F.R. Wagner and Professor R. Dronskowski for valuable discussions.",

year = "2002",

month = nov,

day = "18",

doi = "10.1016/S0925-8388(02)00519-4",

language = "English",

volume = "346",

pages = "129--133",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

number = "1-2",

}

TY - JOUR

T1 - XAS spectra of Ce2[MnN3] at the Ce-M4,5, Ce-L3, Mn-L2,3 and N-K thresholds

AU - Niewa, R.

AU - Hu, Z.

AU - Grazioli, C.

AU - Rößler, U.

AU - Golden, M. S.

AU - Knupfer, M.

AU - Fink, J.

AU - Giefers, H.

AU - Wortmann, G.

AU - De Groot, F. M.F.

AU - DiSalvo, F. J.

N1 - Funding Information: We acknowledge financial support by the Deutsche Forschungsgemeinschaft (Fi-439/7-1 and SFB 463 ‘Seltenerd-Übergangsmetallverbindungen: Struktur, Magnetismus und Transport’). RN would like to thank Professor R. Kniep, Dr Yu. Grin, Dr F.R. Wagner and Professor R. Dronskowski for valuable discussions.

PY - 2002/11/18

Y1 - 2002/11/18

N2 - The X-ray absorption spectroscopy at the Ce-M4,5, Ce-L3, Mn-L2,3 and N-K thresholds was used to study the electronic and magnetic structure of the recently obtained Ce2[MnN3]. Manganese is found to be in a state similar to that in η-Mn3N2, with strong covalency between Mn and N. The multiple peaked structure in the Ce-M4,5 and Ce-L3 XAS spectra indicates that the valence state of cerium in Ce2[MnN3] is only slightly lower than that found in CeO2 containing CeIV with a strong covalent mixture between Ce 4f and ligand 2p states. By simulating the Ce-L3 XAS spectrum using a simplified Anderson impurity model the 4f occupancy was found to be 0.52 for Ce2[MnN3] compared to 0.49 for CeO2 in the ground state.

AB - The X-ray absorption spectroscopy at the Ce-M4,5, Ce-L3, Mn-L2,3 and N-K thresholds was used to study the electronic and magnetic structure of the recently obtained Ce2[MnN3]. Manganese is found to be in a state similar to that in η-Mn3N2, with strong covalency between Mn and N. The multiple peaked structure in the Ce-M4,5 and Ce-L3 XAS spectra indicates that the valence state of cerium in Ce2[MnN3] is only slightly lower than that found in CeO2 containing CeIV with a strong covalent mixture between Ce 4f and ligand 2p states. By simulating the Ce-L3 XAS spectrum using a simplified Anderson impurity model the 4f occupancy was found to be 0.52 for Ce2[MnN3] compared to 0.49 for CeO2 in the ground state.

KW - Electronic state

KW - Nitridomanganates

KW - Rare earth

KW - Ternary nitrides

KW - XAS

UR - http://www.scopus.com/inward/record.url?scp=0037131858&partnerID=8YFLogxK

U2 - 10.1016/S0925-8388(02)00519-4

DO - 10.1016/S0925-8388(02)00519-4

M3 - Article

AN - SCOPUS:0037131858

SN - 0925-8388

VL - 346

SP - 129

EP - 133

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

IS - 1-2

ER -

XAS spectra of Ce₂[MnN₃] at the Ce-M_4,5, Ce-L₃, Mn-L_2,3 and N-K thresholds

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Keywords

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