Cation distribution and Electrical/Dielectric features of Ru substituted CoNiCuZn spinel ferrite nanoparticles

M. A. Almessiere; S. E. Shirsath; A. Baykal; A. Mihmanlı; M. A. Gondal; Y. Slimani

doi:10.1016/j.ceramint.2025.01.363

Cation distribution and Electrical/Dielectric features of Ru substituted CoNiCuZn spinel ferrite nanoparticles

M. A. Almessiere^*
, S. E. Shirsath
, A. Baykal^*
, A. Mihmanlı
, M. A. Gondal^*
, Y. Slimani

^*Corresponding author for this work

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

10 Scopus citations

Abstract

In this study, Co_0.25Ni_0.25Cu_0.25Zn_0.25Ru_xFe_2-xO₄ (Ru_x→Co_0.25Ni_0.25Cu_0.25Zn_0.25Fe_2-xO₄) (x ≤ 0.1) nanospinel ferrite (NSFs) were manufactured via sol-gel combustion route, with varying Ru content x ≤ 0.1. The cubic spinel structure was confirmed for all products by XRD analysis. The cubic morphology of the products was confirmed via SEM (Scanning Electron Microscopy), HR-TEM (High Resolution Transmission Electron Microscopy) and TEM (Transmission Electron Microscopy) analyses. The chemical composition of the product has been confirmed by EDX (Energy Dispersive X-ray) analysis. The cation distribution was analyzed using the Bertaut method by comparing observed and calculated intensity ratios of selected X-ray diffraction reflections. The ionic radii of tetrahedral (T_d) A-site and octahedral (O_h) B-site cations, theoretical lattice constants, and oxygen positional parameters were determined. Results indicate that Ru substitution leads to a slight expansion in the B-site ionic radius and a subtle increase in the lattice constant, while the A-site configuration remains unaffected. The oxygen positional parameter showed minimal change, indicating structural stability. Additionally, dielectric properties were examined, revealing that the dielectric constant increases with Ru content and T, following Maxwell-Wagner interfacial polarization. AC conductivity analysis indicated thermally activated hopping mechanisms with enhanced polaron hopping due to Ru substitution. Dielectric measurements showed that the dielectric constant increased with Ru content, reaching a maximum of 150,000 at low frequencies for x = 0.10. AC conductivity analysis demonstrated thermally activated hopping mechanisms, with conductivity values increasing from 0.3 S/m for x = 0.00–1.2 S/m for x = 0.10 at 120 °C. This study presents insights into the structural and electrical features of Ru_x→Co_0.25Ni_0.25Cu_0.25Zn_0.25Fe_2-xO₄ (x ≤ 0.1) NSFs, which could be valuable for magneto-optical applications.

Original language	English
Pages (from-to)	15273-15282
Number of pages	10
Journal	Ceramics International
Volume	51
Issue number	12
DOIs	https://doi.org/10.1016/j.ceramint.2025.01.363
State	Published - May 2025

Bibliographical note

Publisher Copyright:
© 2025 Elsevier Ltd and Techna Group S.r.l.

Keywords

AC conductivity
Electrical and dielectric properties
Rare earth ion substitutions
Sol-gel synthesis

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/j.ceramint.2025.01.363

Cite this

@article{a72fc09a3ec644a390cae52c2523c3c1,

title = "Cation distribution and Electrical/Dielectric features of Ru substituted CoNiCuZn spinel ferrite nanoparticles",

abstract = "In this study, Co0.25Ni0.25Cu0.25Zn0.25RuxFe2-xO4 (Rux→Co0.25Ni0.25Cu0.25Zn0.25Fe2-xO4) (x ≤ 0.1) nanospinel ferrite (NSFs) were manufactured via sol-gel combustion route, with varying Ru content x ≤ 0.1. The cubic spinel structure was confirmed for all products by XRD analysis. The cubic morphology of the products was confirmed via SEM (Scanning Electron Microscopy), HR-TEM (High Resolution Transmission Electron Microscopy) and TEM (Transmission Electron Microscopy) analyses. The chemical composition of the product has been confirmed by EDX (Energy Dispersive X-ray) analysis. The cation distribution was analyzed using the Bertaut method by comparing observed and calculated intensity ratios of selected X-ray diffraction reflections. The ionic radii of tetrahedral (Td) A-site and octahedral (Oh) B-site cations, theoretical lattice constants, and oxygen positional parameters were determined. Results indicate that Ru substitution leads to a slight expansion in the B-site ionic radius and a subtle increase in the lattice constant, while the A-site configuration remains unaffected. The oxygen positional parameter showed minimal change, indicating structural stability. Additionally, dielectric properties were examined, revealing that the dielectric constant increases with Ru content and T, following Maxwell-Wagner interfacial polarization. AC conductivity analysis indicated thermally activated hopping mechanisms with enhanced polaron hopping due to Ru substitution. Dielectric measurements showed that the dielectric constant increased with Ru content, reaching a maximum of 150,000 at low frequencies for x = 0.10. AC conductivity analysis demonstrated thermally activated hopping mechanisms, with conductivity values increasing from 0.3 S/m for x = 0.00–1.2 S/m for x = 0.10 at 120 °C. This study presents insights into the structural and electrical features of Rux→Co0.25Ni0.25Cu0.25Zn0.25Fe2-xO4 (x ≤ 0.1) NSFs, which could be valuable for magneto-optical applications.",

keywords = "AC conductivity, Electrical and dielectric properties, Rare earth ion substitutions, Sol-gel synthesis",

author = "Almessiere, \{M. A.\} and Shirsath, \{S. E.\} and A. Baykal and A. Mihmanlı and Gondal, \{M. A.\} and Y. Slimani",

note = "Publisher Copyright: {\textcopyright} 2025 Elsevier Ltd and Techna Group S.r.l.",

year = "2025",

month = may,

doi = "10.1016/j.ceramint.2025.01.363",

language = "English",

volume = "51",

pages = "15273--15282",

journal = "Ceramics International",

issn = "0272-8842",

publisher = "Elsevier Ltd.",

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}

TY - JOUR

T1 - Cation distribution and Electrical/Dielectric features of Ru substituted CoNiCuZn spinel ferrite nanoparticles

AU - Almessiere, M. A.

AU - Shirsath, S. E.

AU - Baykal, A.

AU - Mihmanlı, A.

AU - Gondal, M. A.

AU - Slimani, Y.

PY - 2025/5

Y1 - 2025/5

N2 - In this study, Co0.25Ni0.25Cu0.25Zn0.25RuxFe2-xO4 (Rux→Co0.25Ni0.25Cu0.25Zn0.25Fe2-xO4) (x ≤ 0.1) nanospinel ferrite (NSFs) were manufactured via sol-gel combustion route, with varying Ru content x ≤ 0.1. The cubic spinel structure was confirmed for all products by XRD analysis. The cubic morphology of the products was confirmed via SEM (Scanning Electron Microscopy), HR-TEM (High Resolution Transmission Electron Microscopy) and TEM (Transmission Electron Microscopy) analyses. The chemical composition of the product has been confirmed by EDX (Energy Dispersive X-ray) analysis. The cation distribution was analyzed using the Bertaut method by comparing observed and calculated intensity ratios of selected X-ray diffraction reflections. The ionic radii of tetrahedral (Td) A-site and octahedral (Oh) B-site cations, theoretical lattice constants, and oxygen positional parameters were determined. Results indicate that Ru substitution leads to a slight expansion in the B-site ionic radius and a subtle increase in the lattice constant, while the A-site configuration remains unaffected. The oxygen positional parameter showed minimal change, indicating structural stability. Additionally, dielectric properties were examined, revealing that the dielectric constant increases with Ru content and T, following Maxwell-Wagner interfacial polarization. AC conductivity analysis indicated thermally activated hopping mechanisms with enhanced polaron hopping due to Ru substitution. Dielectric measurements showed that the dielectric constant increased with Ru content, reaching a maximum of 150,000 at low frequencies for x = 0.10. AC conductivity analysis demonstrated thermally activated hopping mechanisms, with conductivity values increasing from 0.3 S/m for x = 0.00–1.2 S/m for x = 0.10 at 120 °C. This study presents insights into the structural and electrical features of Rux→Co0.25Ni0.25Cu0.25Zn0.25Fe2-xO4 (x ≤ 0.1) NSFs, which could be valuable for magneto-optical applications.

AB - In this study, Co0.25Ni0.25Cu0.25Zn0.25RuxFe2-xO4 (Rux→Co0.25Ni0.25Cu0.25Zn0.25Fe2-xO4) (x ≤ 0.1) nanospinel ferrite (NSFs) were manufactured via sol-gel combustion route, with varying Ru content x ≤ 0.1. The cubic spinel structure was confirmed for all products by XRD analysis. The cubic morphology of the products was confirmed via SEM (Scanning Electron Microscopy), HR-TEM (High Resolution Transmission Electron Microscopy) and TEM (Transmission Electron Microscopy) analyses. The chemical composition of the product has been confirmed by EDX (Energy Dispersive X-ray) analysis. The cation distribution was analyzed using the Bertaut method by comparing observed and calculated intensity ratios of selected X-ray diffraction reflections. The ionic radii of tetrahedral (Td) A-site and octahedral (Oh) B-site cations, theoretical lattice constants, and oxygen positional parameters were determined. Results indicate that Ru substitution leads to a slight expansion in the B-site ionic radius and a subtle increase in the lattice constant, while the A-site configuration remains unaffected. The oxygen positional parameter showed minimal change, indicating structural stability. Additionally, dielectric properties were examined, revealing that the dielectric constant increases with Ru content and T, following Maxwell-Wagner interfacial polarization. AC conductivity analysis indicated thermally activated hopping mechanisms with enhanced polaron hopping due to Ru substitution. Dielectric measurements showed that the dielectric constant increased with Ru content, reaching a maximum of 150,000 at low frequencies for x = 0.10. AC conductivity analysis demonstrated thermally activated hopping mechanisms, with conductivity values increasing from 0.3 S/m for x = 0.00–1.2 S/m for x = 0.10 at 120 °C. This study presents insights into the structural and electrical features of Rux→Co0.25Ni0.25Cu0.25Zn0.25Fe2-xO4 (x ≤ 0.1) NSFs, which could be valuable for magneto-optical applications.

KW - AC conductivity

KW - Electrical and dielectric properties

KW - Rare earth ion substitutions

KW - Sol-gel synthesis

UR - https://www.scopus.com/pages/publications/105003096662

U2 - 10.1016/j.ceramint.2025.01.363

DO - 10.1016/j.ceramint.2025.01.363

M3 - Article

AN - SCOPUS:105003096662

SN - 0272-8842

VL - 51

SP - 15273

EP - 15282

JO - Ceramics International

JF - Ceramics International

IS - 12

ER -

Cation distribution and Electrical/Dielectric features of Ru substituted CoNiCuZn spinel ferrite nanoparticles

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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