View in EDS

Multi-faceted physicochemical investigation of La3+ substituted Mn-Ni-Cd spinel ferrites with structural analysis, optical band gap engineering, magnetodielectric properties and enhanced microwave absorption performance in 1–5 GHz frequency range

Saved in:
Bibliographic Details
Title: Multi-faceted physicochemical investigation of La3+ substituted Mn-Ni-Cd spinel ferrites with structural analysis, optical band gap engineering, magnetodielectric properties and enhanced microwave absorption performance in 1–5 GHz frequency range
Authors: Warsi, Muzamil Ahmed1 (AUTHOR), Hashim, Muhammad1 (AUTHOR) hashimphysicist@gmail.com, Nadeem, Iram1 (AUTHOR), Mukhtar, Kashif1 (AUTHOR), Ali, Wazir1 (AUTHOR), Arshad, Muhammad Imran2 (AUTHOR)
Source: Ceramics International. Dec2025:Part B, Vol. 51 Issue 30, p64355-64374. 20p.
Subjects: Electromagnetic wave absorption, Materials science, Band gaps, Lanthanum, Dielectric properties, Structural analysis (Science)
Abstract: Novel absorbers of electromagnetic waves with excellent shielding and energy dissipation have identified the most acute issue in material science. The challenge to create high-tech electromagnetic wave absorbers with superior shielding and high-energy dissipation efficiency is a topical area of materials science. Lanthanum-doped Mn 0. 5 Ni 0. 3 Cd 0. 2 Fe 2-x La x O 4 compounds with (x = 0.0, 0.3, 0.5, 0.7, and 0.9) were produced through a sol-gel auto-ignition method to investigate their structural, optical, dielectric, and magnetic properties for electromagnetic applications. Characterization via XRD, FTIR, UV–Vis, SEM, Dielectric and VSM confirmed that La3+ doping led to notable changes in the material's properties.XRD affirmed the formation of spinel structure with lattice parameters growing from 8.418 Å to 8.452 Å upon La3+ substitution. Crystallite sizes reduced from 58.61 nm to 55.326 nm, and unit cell volumes grew from 596.60 nm3 to 603.70 nm3. FTIR spectroscopy demonstrated characteristic vibration peaks at 553–598 cm−1 (octahedral sites) and 453–492 cm−1 (tetrahedral sites). UV–Vis spectrometry documented extreme optical band gap narrowing from 2.97 eV to 1.72 eV due to La3+-induced localized states and oxygen defects. SEM micrograph displayed uniform morphology with spherical nanoparticles agglomerating into one another. I–V characterization showed non-linear semiconducting behavior with increased conductivity at the higher La concentration. Magnetic measurements documented decreasing saturation magnetization (55.52–50.77 emu/g) and increasing coercivity owing to altered A–B superexchange interactions('A' typically represents ions located on the tetrahedral sites, while 'B' signifies ions situated on the octahedral sites within the crystal structure). Dielectric analysis revealed frequency-dependent dielectric constant and tangent loss reductions, whereas La doping enhanced AC conductivity. Overall, the most prominent feature was electromagnetic wave absorption with the highest intensity at Lanthanum concentration (x = 0.5) and a good reflection loss of −75.93 dB at 2.97 GHz. The best performance is attributed to enhanced impedance matching, dipolar polarization, and higher charge carrier mobility. These results underscore the possible potential of La-doped ferrites for electromagnetic wave absorption, optoelectronic devices, and high-frequency applications with new prospects for the design of new materials. [ABSTRACT FROM AUTHOR]
Copyright of Ceramics International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 190229905
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Multi-faceted physicochemical investigation of La3+ substituted Mn-Ni-Cd spinel ferrites with structural analysis, optical band gap engineering, magnetodielectric properties and enhanced microwave absorption performance in 1–5 GHz frequency range
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Warsi%2C+Muzamil+Ahmed%22">Warsi, Muzamil Ahmed</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hashim%2C+Muhammad%22">Hashim, Muhammad</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> hashimphysicist@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Nadeem%2C+Iram%22">Nadeem, Iram</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mukhtar%2C+Kashif%22">Mukhtar, Kashif</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ali%2C+Wazir%22">Ali, Wazir</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Arshad%2C+Muhammad+Imran%22">Arshad, Muhammad Imran</searchLink><relatesTo>2</relatesTo> (AUTHOR)
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Ceramics+International%22">Ceramics International</searchLink>. Dec2025:Part B, Vol. 51 Issue 30, p64355-64374. 20p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Electromagnetic+wave+absorption%22">Electromagnetic wave absorption</searchLink><br /><searchLink fieldCode="DE" term="%22Materials+science%22">Materials science</searchLink><br /><searchLink fieldCode="DE" term="%22Band+gaps%22">Band gaps</searchLink><br /><searchLink fieldCode="DE" term="%22Lanthanum%22">Lanthanum</searchLink><br /><searchLink fieldCode="DE" term="%22Dielectric+properties%22">Dielectric properties</searchLink><br /><searchLink fieldCode="DE" term="%22Structural+analysis+%28Science%29%22">Structural analysis (Science)</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Novel absorbers of electromagnetic waves with excellent shielding and energy dissipation have identified the most acute issue in material science. The challenge to create high-tech electromagnetic wave absorbers with superior shielding and high-energy dissipation efficiency is a topical area of materials science. Lanthanum-doped Mn 0. 5 Ni 0. 3 Cd 0. 2 Fe 2-x La x O 4 compounds with (x = 0.0, 0.3, 0.5, 0.7, and 0.9) were produced through a sol-gel auto-ignition method to investigate their structural, optical, dielectric, and magnetic properties for electromagnetic applications. Characterization via XRD, FTIR, UV–Vis, SEM, Dielectric and VSM confirmed that La3+ doping led to notable changes in the material's properties.XRD affirmed the formation of spinel structure with lattice parameters growing from 8.418 Å to 8.452 Å upon La3+ substitution. Crystallite sizes reduced from 58.61 nm to 55.326 nm, and unit cell volumes grew from 596.60 nm3 to 603.70 nm3. FTIR spectroscopy demonstrated characteristic vibration peaks at 553–598 cm−1 (octahedral sites) and 453–492 cm−1 (tetrahedral sites). UV–Vis spectrometry documented extreme optical band gap narrowing from 2.97 eV to 1.72 eV due to La3+-induced localized states and oxygen defects. SEM micrograph displayed uniform morphology with spherical nanoparticles agglomerating into one another. I–V characterization showed non-linear semiconducting behavior with increased conductivity at the higher La concentration. Magnetic measurements documented decreasing saturation magnetization (55.52–50.77 emu/g) and increasing coercivity owing to altered A–B superexchange interactions('A' typically represents ions located on the tetrahedral sites, while 'B' signifies ions situated on the octahedral sites within the crystal structure). Dielectric analysis revealed frequency-dependent dielectric constant and tangent loss reductions, whereas La doping enhanced AC conductivity. Overall, the most prominent feature was electromagnetic wave absorption with the highest intensity at Lanthanum concentration (x = 0.5) and a good reflection loss of −75.93 dB at 2.97 GHz. The best performance is attributed to enhanced impedance matching, dipolar polarization, and higher charge carrier mobility. These results underscore the possible potential of La-doped ferrites for electromagnetic wave absorption, optoelectronic devices, and high-frequency applications with new prospects for the design of new materials. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Ceramics International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=190229905
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.ceramint.2025.11.173
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 20
        StartPage: 64355
    Subjects:
      – SubjectFull: Electromagnetic wave absorption
        Type: general
      – SubjectFull: Materials science
        Type: general
      – SubjectFull: Band gaps
        Type: general
      – SubjectFull: Lanthanum
        Type: general
      – SubjectFull: Dielectric properties
        Type: general
      – SubjectFull: Structural analysis (Science)
        Type: general
    Titles:
      – TitleFull: Multi-faceted physicochemical investigation of La3+ substituted Mn-Ni-Cd spinel ferrites with structural analysis, optical band gap engineering, magnetodielectric properties and enhanced microwave absorption performance in 1–5 GHz frequency range
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Warsi, Muzamil Ahmed
      – PersonEntity:
          Name:
            NameFull: Hashim, Muhammad
      – PersonEntity:
          Name:
            NameFull: Nadeem, Iram
      – PersonEntity:
          Name:
            NameFull: Mukhtar, Kashif
      – PersonEntity:
          Name:
            NameFull: Ali, Wazir
      – PersonEntity:
          Name:
            NameFull: Arshad, Muhammad Imran
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 20
              M: 12
              Text: Dec2025:Part B
              Type: published
              Y: 2025
          Identifiers:
            – Type: issn-print
              Value: 02728842
          Numbering:
            – Type: volume
              Value: 51
            – Type: issue
              Value: 30
          Titles:
            – TitleFull: Ceramics International
              Type: main
ResultId 1