Cation distribution and site occupancy of nanoscale Cu2+-Er3+ substituted strontium hexaferrites via Raman and Mössbauer spectroscopy

J. Mohammed; I. Sa'adu; Y. S. Wudil; Tchouank Tekou Carol; H. Y. Hafeez; Ashraf Y. Elnaggar; Gaber A.M. Mersal; Mohamed M. Ibrahim; Zeinhom M. El-Bahy; A. K. Srivastava

doi:10.1016/j.molstruc.2022.133083

Cation distribution and site occupancy of nanoscale Cu²⁺-Er³⁺ substituted strontium hexaferrites via Raman and Mössbauer spectroscopy

J. Mohammed^*, I. Sa'adu, Y. S. Wudil, Tchouank Tekou Carol, H. Y. Hafeez, Ashraf Y. Elnaggar, Gaber A.M. Mersal, Mohamed M. Ibrahim, Zeinhom M. El-Bahy, A. K. Srivastava

^*Corresponding author for this work

Interdisciplinary Research Center for Construction and Building Materials

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

10 Scopus citations

Abstract

In this research, we report on the cation distribution and site occupancy of Cu²⁺ and Er³⁺ ions in the hexagonal lattice of M-type strontium hexagonal ferrites with chemical composition Sr_1-xCu_xFe_12-yEr_yO₁₉ (x=0.0, 0.1, 0.2, and y=0.0, 0.4, 0.5) fabricated using sol-gel autocombustion technique. Raman analysis of the synthesized samples was conducted based on the group theory analysis of hexagonal ferrites based on the D_6h symmetry. The Raman active modes based on the mode assignment and symmetry and were typical of M-type hexaferrite. Mössbauer spectroscopy shows the density of the s electron cloud at the 12k, 4f₂, and 4f₁ is affected by Cu²⁺-Er³⁺ substitution which indicate that all the five sexets originate from Fe³⁺ ion with high spin and that Er³⁺ ion (with d¹⁰ orbitals) occupies Fe³⁺ ion position at 12k, 4f₂, 2a, and 2b sites in different proportion based on the Ligand theory.

Original language	English
Article number	133083
Journal	Journal of Molecular Structure
Volume	1262
DOIs	https://doi.org/10.1016/j.molstruc.2022.133083
State	Published - 15 Aug 2022

Bibliographical note

Publisher Copyright:
© 2022

Keywords

Hyperfine field
Mössbauer spectroscopy
Raman active mode
Raman spectroscopy

ASJC Scopus subject areas

Analytical Chemistry
Spectroscopy
Organic Chemistry
Inorganic Chemistry

Access to Document

10.1016/j.molstruc.2022.133083

Cite this

Mohammed, J., Sa'adu, I., Wudil, Y. S., Carol, T. T., Hafeez, H. Y., Elnaggar, A. Y., Mersal, G. A. M., Ibrahim, M. M., El-Bahy, Z. M., & Srivastava, A. K. (2022). Cation distribution and site occupancy of nanoscale Cu²⁺-Er³⁺ substituted strontium hexaferrites via Raman and Mössbauer spectroscopy. Journal of Molecular Structure, 1262, Article 133083. https://doi.org/10.1016/j.molstruc.2022.133083

@article{a0b2cb8267d64039af552dba3ec3d3b0,

title = "Cation distribution and site occupancy of nanoscale Cu2+-Er3+ substituted strontium hexaferrites via Raman and M{\"o}ssbauer spectroscopy",

abstract = "In this research, we report on the cation distribution and site occupancy of Cu2+ and Er3+ ions in the hexagonal lattice of M-type strontium hexagonal ferrites with chemical composition Sr1-xCuxFe12-yEryO19 (x=0.0, 0.1, 0.2, and y=0.0, 0.4, 0.5) fabricated using sol-gel autocombustion technique. Raman analysis of the synthesized samples was conducted based on the group theory analysis of hexagonal ferrites based on the D6h symmetry. The Raman active modes based on the mode assignment and symmetry and were typical of M-type hexaferrite. M{\"o}ssbauer spectroscopy shows the density of the s electron cloud at the 12k, 4f2, and 4f1 is affected by Cu2+-Er3+ substitution which indicate that all the five sexets originate from Fe3+ ion with high spin and that Er3+ ion (with d10 orbitals) occupies Fe3+ ion position at 12k, 4f2, 2a, and 2b sites in different proportion based on the Ligand theory.",

keywords = "Hyperfine field, M{\"o}ssbauer spectroscopy, Raman active mode, Raman spectroscopy",

author = "J. Mohammed and I. Sa'adu and Wudil, \{Y. S.\} and Carol, \{Tchouank Tekou\} and Hafeez, \{H. Y.\} and Elnaggar, \{Ashraf Y.\} and Mersal, \{Gaber A.M.\} and Ibrahim, \{Mohamed M.\} and El-Bahy, \{Zeinhom M.\} and Srivastava, \{A. K.\}",

note = "Publisher Copyright: {\textcopyright} 2022",

year = "2022",

month = aug,

day = "15",

doi = "10.1016/j.molstruc.2022.133083",

language = "English",

volume = "1262",

journal = "Journal of Molecular Structure",

issn = "0022-2860",

}

TY - JOUR

T1 - Cation distribution and site occupancy of nanoscale Cu2+-Er3+ substituted strontium hexaferrites via Raman and Mössbauer spectroscopy

AU - Mohammed, J.

AU - Sa'adu, I.

AU - Wudil, Y. S.

AU - Carol, Tchouank Tekou

AU - Hafeez, H. Y.

AU - Elnaggar, Ashraf Y.

AU - Mersal, Gaber A.M.

AU - Ibrahim, Mohamed M.

AU - El-Bahy, Zeinhom M.

AU - Srivastava, A. K.

PY - 2022/8/15

Y1 - 2022/8/15

N2 - In this research, we report on the cation distribution and site occupancy of Cu2+ and Er3+ ions in the hexagonal lattice of M-type strontium hexagonal ferrites with chemical composition Sr1-xCuxFe12-yEryO19 (x=0.0, 0.1, 0.2, and y=0.0, 0.4, 0.5) fabricated using sol-gel autocombustion technique. Raman analysis of the synthesized samples was conducted based on the group theory analysis of hexagonal ferrites based on the D6h symmetry. The Raman active modes based on the mode assignment and symmetry and were typical of M-type hexaferrite. Mössbauer spectroscopy shows the density of the s electron cloud at the 12k, 4f2, and 4f1 is affected by Cu2+-Er3+ substitution which indicate that all the five sexets originate from Fe3+ ion with high spin and that Er3+ ion (with d10 orbitals) occupies Fe3+ ion position at 12k, 4f2, 2a, and 2b sites in different proportion based on the Ligand theory.

AB - In this research, we report on the cation distribution and site occupancy of Cu2+ and Er3+ ions in the hexagonal lattice of M-type strontium hexagonal ferrites with chemical composition Sr1-xCuxFe12-yEryO19 (x=0.0, 0.1, 0.2, and y=0.0, 0.4, 0.5) fabricated using sol-gel autocombustion technique. Raman analysis of the synthesized samples was conducted based on the group theory analysis of hexagonal ferrites based on the D6h symmetry. The Raman active modes based on the mode assignment and symmetry and were typical of M-type hexaferrite. Mössbauer spectroscopy shows the density of the s electron cloud at the 12k, 4f2, and 4f1 is affected by Cu2+-Er3+ substitution which indicate that all the five sexets originate from Fe3+ ion with high spin and that Er3+ ion (with d10 orbitals) occupies Fe3+ ion position at 12k, 4f2, 2a, and 2b sites in different proportion based on the Ligand theory.

KW - Hyperfine field

KW - Mössbauer spectroscopy

KW - Raman active mode

KW - Raman spectroscopy

UR - http://www.scopus.com/inward/record.url?scp=85129257276&partnerID=8YFLogxK

U2 - 10.1016/j.molstruc.2022.133083

DO - 10.1016/j.molstruc.2022.133083

M3 - Article

AN - SCOPUS:85129257276

SN - 0022-2860

VL - 1262

JO - Journal of Molecular Structure

JF - Journal of Molecular Structure

M1 - 133083

ER -