Substitution of La3+ in Cu0.5Co0.5 LaxFe2-x O4 (x=0.02, 0.06) spinel ferrites improves the structural and dielectric Properties

Year : 2025 | Volume : 15 | Issue : 03 | Page : 45 48
    By

    Nagose T. S.,

  • Moharkar P.R.,

  • Tembhurne P.K.,

  1. Research Scholar, Sardar Patel College, Chandrapur, Maharashtra, India
  2. Professor, Dr. Khatri College, Chandrapur, Maharashtra, India
  3. Assistant Professor, Gramgeeta Mahavidyalaya, Chimur, Maharashtra, India

Abstract

Nanosized Spinel ferrites with composition Cu0.5Co0.5 LaxFe2-x O4  (x=0.2, 0.6) synthesized by Sol-Gel auto Combustion method. The prepared sample was calcinated at 8000c  for 4 hours. The substitution of La3+ effects the structural parameters, which is characterized by X-ray diffraction (XRD).  The X-rd analysis shows that the crystallite size is 34.609 nm for 0.02 and 38.994 nm for 0.06 was calculated by using Debye-Scherrer’s formula.  dislocation density shows at value 8.3485 1/m2 & 6.5765 1/m2. Hoping length at tetrahedral and octahedral sites (LA and LB).3.6308 A0 and 2.9645A0  for x=0.02 3.6143 A0  and 2.9510 A0 for x=0.06.The variation of dielectric constant (ɛ′) as a function of frequency in a range of  100Hz  to 1MHz  was studied. Nanosized spinel ferrites Cu₀.₅Co₀.₅LaₓFe₂₋ₓO₄ (x = 0.2, 0.6) were synthesized via the sol-gel auto-combustion method and calcinated at 800°C. XRD confirmed structural changes with La³⁺ substitution, showing crystallite sizes of ~35–39 nm and corresponding dislocation densities. Hopping lengths at tetrahedral and octahedral sites varied with La content. Dielectric constant behavior was analyzed across 100 Hz–1 MHz.

Keywords: Sol-Gel auto combustion method, X-rd, Dislocation density, Hoping length, Dielectric

[This article belongs to Journal of Materials & Metallurgical Engineering ]

How to cite this article:
Nagose T. S., Moharkar P.R., Tembhurne P.K.. Substitution of La3+ in Cu0.5Co0.5 LaxFe2-x O4 (x=0.02, 0.06) spinel ferrites improves the structural and dielectric Properties. Journal of Materials & Metallurgical Engineering. 2025; 15(03):45-48.
How to cite this URL:
Nagose T. S., Moharkar P.R., Tembhurne P.K.. Substitution of La3+ in Cu0.5Co0.5 LaxFe2-x O4 (x=0.02, 0.06) spinel ferrites improves the structural and dielectric Properties. Journal of Materials & Metallurgical Engineering. 2025; 15(03):45-48. Available from: https://journals.stmjournals.com/jomme/article=2025/view=213702


References

[1] Vivek Chaudhari, R.H. Kadam, M.L. Mane, Sagar E. Shirsath, A.B. Kadam, D.R. Mane,  Effect of La3+ impurity on magnetic and electrical properties of Co–Cu– Cr–Fe nanoparticles,    J. Nanosci. Nanotechnol.        15 (6) (2015) 4268–4275.

[2] Mohd. Hashim, Alimuddin, Shalendra Kumar, B.H. Koo, Sagar E. Shirsath, E.M.  Mohammed et al., Structural, electrical and magnetic properties of Co–Cu ferrite nanoparticles, J. Alloys Compd. 518 (2012) 11–18.

[3] Pu. Yuan, Xia Tao, Jing Zhai, Jian-Feng Chen, Hydrothermal synthesis and magnetic properties of  Co0.2Cu0.03Fe2.77O4 nanoparticles, Mater. Res. Bull. 45 (2010) 616–620.

[4]   Shrikant M. Suryawanshi , Dilip S. Badwaik “ A comprehensive study on structural,   magnetic and dielectric properties of Ni 0.3 Cu0.3 Zn0.4 Fe1.8 Cr0.2O4 nanoparticles synthesized by sol-gel auto combustion route. Journal of Molecular Structure 1272 (2023)  134173.

[5] B.B. Raje Shaikh, S.Q. Chishty, Auto-ignition synthesis of rare-earth metal-doped Ni–Zn spinel ferrites for electronic applications, J. Mater. Sci.: Mater. Electron. 32 (2021) 23999–24010.

[6] V. R. Bhagwat, A. V. Humbe, S. D. More, K. M. Jadhav, Sol-gel auto combustion synthesis and characterizations of cobalt ferrite nanoparticles: Different fuels approach, Mater. Sci. Eng. B 248 (2019)    114388.

[7] Kavita Verma, Ashwini Kumar, Dinesh Varshney, Dielectric relaxation behaviour of   AxCo1_xFe2O4  (A = Zn, Mg) mixed ferrites, J. Alloys Compd. 526 (2012) 91–97.

[8] M. Khalid, D.C. Ali, M.S. Akhtar, J.K. Khan, G. Mustafa, N.U. Channa, Z.A. Gilani, H.M.N.H. Khan Asghar, Aluminum substitution in Ni-Co based spinel ferrite nanoparticles by sol–gel auto- combustion method, J. Electron. Mater. 50 (2021) 3302–3311.

[9] S.M. Suryawanshi, D.S. Badwaik, B.S. Shinde, K.D. Gaikwad, M. Shkir, K. V. Chandekar, S. Gundale, A comprehensive study on structural, magnetic and dielectric properties of Ni0.3Cu0.3Zn0.4Fe1.8Cr0.2O4 nanoparticles synthesized by sol-gel auto combustion route, J. Mol. Struct. 1272 (2023), 134173.

[10] Saif U Haque, Kallol Kumar Saikia “A study of Dielectric and magnetic properties of lanthanum Substituted spinel ferrites” Journal of alloys and compounds Volume 701, 15 April 2017,  Pages 612-618.

[11] A.M. Shahare, D.S. Choudhary, A.V. Bagde, Y.S. Bopche, Influence of Cr3+ on structural and dielectric properties of Ni0. 25Cu0.2 Zn0. 55Fe2O4 nanoparticles, Mater. Today:  Proc. 29 (2020) 839–843.

[12]  B.D. Cullity, Elements of X-Ray Diffraction, Addison-Wesley, Reading, MA, 1978.

[13]S.T. Vidya, T.S. Rao, K. Chandra Babu Naidu, Effect of calcination temperature on optical, magnetic and dielectric properties of Sol-Gel synthesized Ni0. 2Mg0. 8-xZnxFe2O4(x = 0.0–0.8), Ceram. Int. 46 (8) (2020) 11515–11529.

[14] K. Shahzadi, Ali Dad Chandio, G. Mustafa, M. Khalid, J.K. Khan, M.S. Akhtar, Z.A.   Gilani, H.M.  Noor ul Huda Khan Asgar, Impact of aluminum substitution on the structural and dielectric properties of Ni–Cu spinel ferrite nanoparticles synthesized via sol–gel route, Opt. Quant. Electr. 52  (2020) 190.

[15] Saif Ul Haque, Kallol Kumar Saikia, G. Murugesan, S. Kalainathan “A study on dielectric and magnetic properties of lanthanum substituted cobalt ferrite” Journal of  Alloys and Compounds(2016).

[16] S.M. Suryawanshi, K.V. Chandekar, D.S. Badwaik, V.V. Warhate, N.M. Gahane, S. R. Daf, Structural, surface, magnetic, and dielectric properties of  Ni0.3Cu0.3Zn0.4Fe1.4Cr0.6O4 spinel ferrite nanocrystals prepared by sol-gel auto combustion route, Inorg. Chem. Commun. 156 (2023) 111204.

[17] K. Pubby, K. Vijay Babu, S. Bindra Narang, Magnetic, elastic, dielectric, microwave absorption and optical characterization of cobalt-substituted nickel spinel ferrites, Mater. Sci Eng. B 255 (2020).

[18] P.B. Wasnik, K.G. Rewatkar  “Impact of trivalent Al substitution on the structural, magnetic and dielectric properties of Ni-Cu ferrite nanoparticles” Inorganic Chemistry Communications 173 (2025) 113850

Regular Issue Subscription Review Article
Volume 15
Issue 03
Received 24/04/2025
Accepted 21/05/2025
Published 29/05/2025
Publication Time 35 Days
285

Login


My IP

PlumX Metrics