Mn K-edge XANES of hexagonal manganites RMnO3 (R = Sc, Y)

C. T. Wu; Y. Y. Hsu; B. N. Lin; H. C. Ku

doi:10.1016/S0921-4526(02)02019-7

Mn K-edge XANES of hexagonal manganites RMnO₃ (R = Sc, Y)

C. T. Wu, Y. Y. Hsu, B. N. Lin, H. C. Ku^*

^*Corresponding author for this work

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

7 Citations (Scopus)

Abstract

Mn K-edge X-ray absorption near-edge spectra (XANES) and magnetic studies for ferroelectromagnetic compounds RMnO₃ (R = Sc, Y) are reported. ScMnO₃ shows stronger d-p hybridization with a triangular antiferromagnetic (AF) order of T_N = 133 K and a spin reorientation T_sr = 23 K, as compared to T_N = 74 K for YMnO ₃. The identical main threshold edge energy of 6545 eV indicates Mn³⁺ character. Small pre-edge features with energy separation P ₂-P₁ of 2.27 eV for ScMnO₃ and 2.72 eV for YMnO₃ is from the 1s-3d dipole transition, which is weakly allowed through the hybridization of Mn 4p with 3d states of neighboring Mn atoms. The larger P₁ peak is corresponding to transition into empty e′↓ and e″↓ minority states, and the smaller P ₂ peak is into leftover e′↓ states.

Original language	English
Pages (from-to)	709-710
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	329-333
Issue number	II
DOIs	https://doi.org/10.1016/S0921-4526(02)02019-7
Publication status	Published - 2003 May
Externally published	Yes

Keywords

Ferroelectromagnetic materials
Triangular antiferromagnetism
XANES

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1016/S0921-4526(02)02019-7

Cite this

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title = "Mn K-edge XANES of hexagonal manganites RMnO3 (R = Sc, Y)",

abstract = "Mn K-edge X-ray absorption near-edge spectra (XANES) and magnetic studies for ferroelectromagnetic compounds RMnO3 (R = Sc, Y) are reported. ScMnO3 shows stronger d-p hybridization with a triangular antiferromagnetic (AF) order of TN = 133 K and a spin reorientation Tsr = 23 K, as compared to TN = 74 K for YMnO 3. The identical main threshold edge energy of 6545 eV indicates Mn3+ character. Small pre-edge features with energy separation P 2-P1 of 2.27 eV for ScMnO3 and 2.72 eV for YMnO3 is from the 1s-3d dipole transition, which is weakly allowed through the hybridization of Mn 4p with 3d states of neighboring Mn atoms. The larger P1 peak is corresponding to transition into empty e′↓ and e″↓ minority states, and the smaller P 2 peak is into leftover e′↓ states.",

keywords = "Ferroelectromagnetic materials, Triangular antiferromagnetism, XANES",

author = "Wu, {C. T.} and Hsu, {Y. Y.} and Lin, {B. N.} and Ku, {H. C.}",

year = "2003",

month = may,

doi = "10.1016/S0921-4526(02)02019-7",

language = "English",

volume = "329-333",

pages = "709--710",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier BV",

number = "II",

}

TY - JOUR

T1 - Mn K-edge XANES of hexagonal manganites RMnO3 (R = Sc, Y)

AU - Wu, C. T.

AU - Hsu, Y. Y.

AU - Lin, B. N.

AU - Ku, H. C.

PY - 2003/5

Y1 - 2003/5

N2 - Mn K-edge X-ray absorption near-edge spectra (XANES) and magnetic studies for ferroelectromagnetic compounds RMnO3 (R = Sc, Y) are reported. ScMnO3 shows stronger d-p hybridization with a triangular antiferromagnetic (AF) order of TN = 133 K and a spin reorientation Tsr = 23 K, as compared to TN = 74 K for YMnO 3. The identical main threshold edge energy of 6545 eV indicates Mn3+ character. Small pre-edge features with energy separation P 2-P1 of 2.27 eV for ScMnO3 and 2.72 eV for YMnO3 is from the 1s-3d dipole transition, which is weakly allowed through the hybridization of Mn 4p with 3d states of neighboring Mn atoms. The larger P1 peak is corresponding to transition into empty e′↓ and e″↓ minority states, and the smaller P 2 peak is into leftover e′↓ states.

AB - Mn K-edge X-ray absorption near-edge spectra (XANES) and magnetic studies for ferroelectromagnetic compounds RMnO3 (R = Sc, Y) are reported. ScMnO3 shows stronger d-p hybridization with a triangular antiferromagnetic (AF) order of TN = 133 K and a spin reorientation Tsr = 23 K, as compared to TN = 74 K for YMnO 3. The identical main threshold edge energy of 6545 eV indicates Mn3+ character. Small pre-edge features with energy separation P 2-P1 of 2.27 eV for ScMnO3 and 2.72 eV for YMnO3 is from the 1s-3d dipole transition, which is weakly allowed through the hybridization of Mn 4p with 3d states of neighboring Mn atoms. The larger P1 peak is corresponding to transition into empty e′↓ and e″↓ minority states, and the smaller P 2 peak is into leftover e′↓ states.

KW - Ferroelectromagnetic materials

KW - Triangular antiferromagnetism

KW - XANES

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