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<p>The double perovskite material La₂CoMnO₆ was synthesized using the sol-gel method. Its structural characteristics were analyzed through X-ray powder diffraction (XRD), with Rietveld refinement confirming that the sample crystallizes in a monoclinic structure within the P2₁/n space group. Field emission scanning electron microscopy (FESEM) images revealed a non-uniform, slightly porous, and agglomerated structure, while elemental composition was determined through EDAX analysis. Magnetic studies indicated a frustrated magnetic ground state with competing interactions, along with a para-to-ferro magnetic transition at a Curie temperature (T<sub>C</sub>) of 209 K. Analysis using Arrott’s plot confirmed that the magnetic transition in La₂CoMnO₆ is of second order. Magnetocaloric studies showed that the Δ<i>S</i><sub><i>M</i></sub>(T) curve remains nearly stable over the investigated temperature range, demonstrating a broadened entropy profile, which positions this material as a promising candidate for magnetic cooling applications.</p> Graphical Abstract <p></p>

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Structural, magnetic and magnetocaloric studies of La2CoMnO6 double perovskite

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年4月10日

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  • Sreethi. S. R,
  • Smitha Joseph,
  • P. A. Aleena,
  • Jibi Kunjumon,
  • Ayona K. Jose,
  • Felicia Aswathy. W,
  • Roshan Jose,
  • R. S. Rimal Isaac,
  • Sujay Chakravarty,
  • D. Sajan

摘要

The double perovskite material La₂CoMnO₆ was synthesized using the sol-gel method. Its structural characteristics were analyzed through X-ray powder diffraction (XRD), with Rietveld refinement confirming that the sample crystallizes in a monoclinic structure within the P2₁/n space group. Field emission scanning electron microscopy (FESEM) images revealed a non-uniform, slightly porous, and agglomerated structure, while elemental composition was determined through EDAX analysis. Magnetic studies indicated a frustrated magnetic ground state with competing interactions, along with a para-to-ferro magnetic transition at a Curie temperature (TC) of 209 K. Analysis using Arrott’s plot confirmed that the magnetic transition in La₂CoMnO₆ is of second order. Magnetocaloric studies showed that the ΔSM(T) curve remains nearly stable over the investigated temperature range, demonstrating a broadened entropy profile, which positions this material as a promising candidate for magnetic cooling applications.

Graphical Abstract